National Water Supply and Drainage Board

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1. Check a decision

Open a decision below. Check the area, period, inputs, result and proposed next step.

2. Try the inputs

Use Example input to change a sample. Use Source input to check the fields and source details. The land-use change decision has its own comparison views.

Record your corrections below, then download your answers or print them.

3. Check each decision

1. Choose what to handle first: systems with large unexplained water balances 2. Target leakage investigations by service area 3. Choose what to handle first: underserved areas for water-service appraisal 4. Refer treated-water results outside applicable limits 5. Choose what to handle first: source-to-consumer hazards and controls 6. Compare peak demand with usable treatment capacity 7. Check pressure outside reviewed operating conditions 8. Choose what to handle first: pipe rehabilitation using verified asset condition 9. Select pumping systems for energy-efficiency appraisal 10. Schedule verification of suspect customer and bulk meters 11. Address recurrent and prolonged supply outages 12. Compare alternative sources under seasonal stress 13. Choose what to handle first: delayed service-connection applications 14. Escalate unresolved water and sanitation complaints 15. Prevent treatment interruptions from chemical shortages 16. Check effluent performance against permit conditions 17. Choose what to handle first: investigation of sewer overflow risks 18. Compare water-service investment alternatives 19. Target support to poorly functioning community water schemes 20. Resolve inconsistent asset and customer service-area references

1. Choose what to handle first: systems with large unexplained water balancesDEC-DP22-001 · Non-revenue water · Suggested priority: High

Try this decision

Prioritize systems with large unexplained water balances.

Verified published component · IWA water-balance components

Method. NRW=input−billed authorized use. Water losses=NRW−unbilled authorized use. Residual real loss=water losses−estimated apparent losses, only when all components are available.

Next step. Review evidence. Separate billing/meter actions from leakage investigations and approve targeted work.

Inputs, example and sources

Asian Development Bank · The Issues and Challenges of Reducing Non-Revenue Water
Institution publication · Figure 4, printed page 15; Annex 1 Water Balance Definitions, printed pages 39–41, PDF pages 47–49

Apparent-loss estimates and the residual real-loss estimate remain local inputs with measurement uncertainty.

Keep the same place, observation period, definitions, units and source versions.

Analysis inputs. Corrected system input [m³]; Billed authorized consumption [m³]; Unbilled authorized consumption [m³]; Estimated apparent losses [m³]

Other required evidence. System input volume; billed authorized consumption; unbilled use; meter uncertainty; period.

Fictional worked example · 2025

Laggala Pallegama — non-revenue water · Laggala Pallegama

Input or result	Value	Unit
Corrected system input	80,000	m³
Billed authorized consumption	57,000	m³
Unbilled authorized consumption	3,200	m³
Estimated apparent losses	4,500	m³
Non-revenue water	23,000	m³
NRW share	28.75	%
Water losses	19,800	m³
Residual real-loss estimate	15,300	m³

NRW is not all leakage. An unknown apparent-loss estimate keeps residual real loss unavailable. Meter uncertainty and matching time/zone boundaries matter.

Proposed checking role. Water utility engineer, quality specialist and service/finance reviewer.

After the action. Reconciled non-revenue components, measurement uncertainty and verified savings.

JICA non-revenue water training materials — Institution publication. Training materials, section1.1, IWA water-balance table. NRW, unbilled authorized use, apparent and real losses are distinct components.
SHARED domain decision contracts — Validation required. Domain decision rules and matching fictional examples. Local comparisons, constraints, source matching, sorting and follow-up proposals; developer checks do not establish scientific or client approval.

Institution and data context

Water Resources Board services — Institution publication. Full method locator not established. Institutional context; does not establish the calculation or local approval.
Water supply and sanitation project completion report — Institution publication. World Bank ICR00005929: contents, results framework and efficiency analysis. Institutional context; does not establish the calculation or local approval.
WHO water safety planning — Institution publication. Full method locator not established. Institutional context; does not establish the calculation or local approval.

Confirm local scope, data rights, parameters and responsible roles in this Institution review. Published components retain their source; they do not approve the local application.

Your checks for this decisionDoes this decision belong to your institution?Is the required data list complete?Are the sources, places and time periods suitable?Can staff use the proposed entry or upload steps?Are the calculation, units and limits correct?Do the chart and result help you decide?Are the checking officer and decision authority correct?Are the access and sharing limits suitable?

What must change? Include corrected fields, rules, limits or words.Who supplies the data, who checks it, and who makes the decision?How often is this decision needed? What would make it urgent?

2. Target leakage investigations by service areaDEC-DP22-002 · Leakage management · Suggested priority: High

Try this decision

Target leakage investigations by service area.

Verified published component · IWA water-balance components

Method. NRW=input−billed authorized use. Water losses=NRW−unbilled authorized use. Residual real loss=water losses−estimated apparent losses, only when all components are available.

Next step. Review evidence. Separate billing/meter actions from leakage investigations and approve targeted work.

Inputs, example and sources

Apparent-loss estimates and the residual real-loss estimate remain local inputs with measurement uncertainty.

Keep the same place, observation period, definitions, units and source versions.

Analysis inputs. Corrected system input [m³]; Billed authorized consumption [m³]; Unbilled authorized consumption [m³]; Estimated apparent losses [m³]

Other required evidence. District input; authorized use; minimum night flow; connections; pressure; uncertainty.

Fictional worked example · 2025

Laggala Pallegama — leakage management · Laggala Pallegama

Input or result	Value	Unit
Corrected system input	80,000	m³
Billed authorized consumption	57,000	m³
Unbilled authorized consumption	3,200	m³
Estimated apparent losses	4,500	m³
Non-revenue water	23,000	m³
NRW share	28.75	%
Water losses	19,800	m³
Residual real-loss estimate	15,300	m³

NRW is not all leakage. An unknown apparent-loss estimate keeps residual real loss unavailable. Meter uncertainty and matching time/zone boundaries matter.

Proposed checking role. Water utility engineer, quality specialist and service/finance reviewer.

After the action. Reconciled non-revenue components, measurement uncertainty and verified savings.

JICA non-revenue water training materials — Institution publication. Training materials, section1.1, IWA water-balance table. NRW, unbilled authorized use, apparent and real losses are distinct components.
SHARED domain decision contracts — Validation required. Domain decision rules and matching fictional examples. Local comparisons, constraints, source matching, sorting and follow-up proposals; developer checks do not establish scientific or client approval.

Institution and data context

Water Resources Board services — Institution publication. Full method locator not established. Institutional context; does not establish the calculation or local approval.
Water supply and sanitation project completion report — Institution publication. World Bank ICR00005929: contents, results framework and efficiency analysis. Institutional context; does not establish the calculation or local approval.
WHO water safety planning — Institution publication. Full method locator not established. Institutional context; does not establish the calculation or local approval.

Confirm local scope, data rights, parameters and responsible roles in this Institution review. Published components retain their source; they do not approve the local application.

What must change? Include corrected fields, rules, limits or words.Who supplies the data, who checks it, and who makes the decision?How often is this decision needed? What would make it urgent?

3. Choose what to handle first: underserved areas for water-service appraisalDEC-DP22-003 · Service expansion · Suggested priority: High

Try this decision

Prioritize underserved areas for water-service appraisal.

Validation required

Method. 100 × distinct covered eligible units / eligible frame. Known uncovered = frame − covered − unknown.

Next step. Review evidence. Select eligible underserved units for outreach, investigate missing coverage, or revise the verified frame.

Inputs, example and sources

Keep the same place, observation period, definitions, units and source versions.

Analysis inputs. Required eligible frame [households]; Distinct members of that frame covered [households]; Frame members with unknown coverage [households]

Other required evidence. Household demand; existing connections; reliable supply; distance; eligibility frame.

Fictional worked example · 2025

Laggala Pallegama — service expansion · Laggala Pallegama

Input or result	Value	Unit
Required eligible frame	100	households
Distinct members of that frame covered	65	households
Frame members with unknown coverage	5	households
Verified coverage	65	%
Known uncovered	30	households
Unknown coverage	5	households

Count each eligible unit once for the selected service and period. Received messages, attendance, adoption and outcomes are separate measures.

Proposed checking role. Water utility engineer, quality specialist and service/finance reviewer.

After the action. Verified eligible units receiving service and remaining unmet need.

SHARED domain decision contracts — Validation required. Domain decision rules and matching fictional examples. Local comparisons, constraints, source matching, sorting and follow-up proposals; developer checks do not establish scientific or client approval.

Institution and data context

Water Resources Board services — Institution publication. Full method locator not established. Institutional context; does not establish the calculation or local approval.
Water supply and sanitation project completion report — Institution publication. World Bank ICR00005929: contents, results framework and efficiency analysis. Institutional context; does not establish the calculation or local approval.
WHO water safety planning — Institution publication. Full method locator not established. Institutional context; does not establish the calculation or local approval.

Confirm local scope, data rights, parameters and responsible roles in this Institution review. Published components retain their source; they do not approve the local application.

What must change? Include corrected fields, rules, limits or words.Who supplies the data, who checks it, and who makes the decision?How often is this decision needed? What would make it urgent?

4. Refer treated-water results outside applicable limitsDEC-DP22-004 · Water quality · Suggested priority: High

Try this decision

Refer treated-water results outside applicable limits.

Validation required

Method. Compare the measured value only with matching parameter, unit, use and averaging period. Retain limit source/version and censored-result status.

Next step. Outside example comparison bounds. Refer a confirmed nonconformance for authorized response, resample, or investigate the method.

Inputs, example and sources

Keep the same place, observation period, definitions, units and source versions.

Analysis inputs. Parameter and applicable use; Measured result [NTU]; Example lower comparison bound [NTU]; Example upper comparison bound [NTU]; Original and limit unit; Sampling and analytical method/version; Limit source, version and use; Parameter, unit, use and averaging period match; Result is below a reporting/detection limit; Averaging interval, sampling depth or process basis

Other required evidence. Sample location; parameter; result; method; date; applicable standard; custody.

Fictional worked example · 2025

Laggala Pallegama — water quality · Laggala Pallegama

Input or result	Value	Unit
Parameter and applicable use	Treated-water turbidity
Measured result	1.4	NTU
Example lower comparison bound	0	NTU
Example upper comparison bound	1	NTU
Original and limit unit	NTU
Sampling and analytical method/version	Sample laboratory method
Limit source, version and use	Fictional comparison bounds; not a regulatory limit
Parameter, unit, use and averaging period match	Yes
Result is below a reporting/detection limit	No
Averaging interval, sampling depth or process basis	Sample stated sampling/averaging basis
Measured value	1.4	NTU

Example bounds establish no compliance or diagnosis. Ambient, drinking-water, effluent, crop, food, air and noise standards are not interchangeable. A censored result is not an exact zero.

Proposed checking role. Water utility engineer, quality specialist and service/finance reviewer.

After the action. Follow-up compliance, exposure/service condition and corrective closure.

SHARED domain decision contracts — Validation required. Domain decision rules and matching fictional examples. Local comparisons, constraints, source matching, sorting and follow-up proposals; developer checks do not establish scientific or client approval.

Institution and data context

Water Resources Board services — Institution publication. Full method locator not established. Institutional context; does not establish the calculation or local approval.
Water supply and sanitation project completion report — Institution publication. World Bank ICR00005929: contents, results framework and efficiency analysis. Institutional context; does not establish the calculation or local approval.
WHO water safety planning — Institution publication. Full method locator not established. Institutional context; does not establish the calculation or local approval.

Confirm local scope, data rights, parameters and responsible roles in this Institution review. Published components retain their source; they do not approve the local application.

What must change? Include corrected fields, rules, limits or words.Who supplies the data, who checks it, and who makes the decision?How often is this decision needed? What would make it urgent?

5. Choose what to handle first: source-to-consumer hazards and controlsDEC-DP22-005 · Water safety planning · Suggested priority: High

Try this decision

Prioritize source-to-consumer hazards and controls.

Validation required

Method. Check each required item and retain its reference. A documented item is not a scientific, legal or institutional approval.

Next step. Complete the evidence. Select a feasible control, escalate beyond authority, or seek technical inspection.

Inputs, example and sources

Keep the same place, observation period, definitions, units and source versions.

Analysis inputs. Supply system; Supply system evidence reference; hazards; hazards evidence reference; exposure; exposure evidence reference; control measures; control measures evidence reference; evidence; evidence evidence reference; approved risk method; approved risk method evidence reference; Documented unresolved critical condition; Evidence observation date; Existing control and its evidence; Competent recipient

Other required evidence. Supply system; hazards; exposure; control measures; evidence; approved risk method.

Fictional worked example · 2025

Laggala Pallegama — water safety planning · Laggala Pallegama

Input or result	Value	Unit
Supply system	Missing
Supply system evidence reference
hazards	Documented
hazards evidence reference	Sample Laggala Pallegama field register / 2025
exposure	Documented
exposure evidence reference	Sample Laggala Pallegama field register / 2025
control measures	Documented
control measures evidence reference	Sample Laggala Pallegama field register / 2025
evidence	Documented
evidence evidence reference	Sample Laggala Pallegama field register / 2025
approved risk method	Documented
approved risk method evidence reference	Sample Laggala Pallegama field register / 2025
Documented unresolved critical condition	Unknown
Evidence observation date	2025-06-30
Existing control and its evidence	Sample documented control
Competent recipient	Responsible specialist / duty authority
Evidence gaps	1	items

Show the hazard, exposure and verified controls separately. No generic score, probability, diagnosis, site clearance or official warning is derived from a count.

Proposed checking role. Water utility engineer, quality specialist and service/finance reviewer.

After the action. Verified control effectiveness and residual risk with evidence.

WHO water safety planning — Institution publication. Full method locator not established. Institutional context; does not establish the calculation or local approval.
SHARED domain decision contracts — Validation required. Domain decision rules and matching fictional examples. Local comparisons, constraints, source matching, sorting and follow-up proposals; developer checks do not establish scientific or client approval.

Institution and data context

Water Resources Board services — Institution publication. Full method locator not established. Institutional context; does not establish the calculation or local approval.
Water supply and sanitation project completion report — Institution publication. World Bank ICR00005929: contents, results framework and efficiency analysis. Institutional context; does not establish the calculation or local approval.
WHO water safety planning — Institution publication. Full method locator not established. Institutional context; does not establish the calculation or local approval.

Confirm local scope, data rights, parameters and responsible roles in this Institution review. Published components retain their source; they do not approve the local application.

What must change? Include corrected fields, rules, limits or words.Who supplies the data, who checks it, and who makes the decision?How often is this decision needed? What would make it urgent?

6. Compare peak demand with usable treatment capacityDEC-DP22-006 · Treatment capacity · Suggested priority: High

Try this decision

Compare peak demand with usable treatment capacity.

Validation required

Method. Usable capacity = rated capacity − documented unavailable capacity. Surplus/shortfall = usable − matching demand.

Next step. Review capacity shortfall. Redistribute usable resources, propose expansion, or manage demand within authorized limits.

Inputs, example and sources

Keep the same place, observation period, definitions, units and source versions.

Analysis inputs. Demand in the selected period [m³/day]; Rated capacity for that period [m³/day]; Unavailable or restricted capacity [m³/day]

Other required evidence. Peak demand; treatment capacity; downtime; raw-water quality; operating restrictions.

Fictional worked example · 2025

Laggala Pallegama — treatment capacity · Laggala Pallegama

Input or result	Value	Unit
Demand in the selected period	150	m³/day
Rated capacity for that period	180	m³/day
Unavailable or restricted capacity	45	m³/day
Usable capacity minus demand	-15	m³/day
Usable capacity	135	m³/day

Match peak/average basis, time window, skill, staffing, accessibility and other binding constraints. One aggregate capacity does not override a safety constraint.

Proposed checking role. Water utility engineer, quality specialist and service/finance reviewer.

After the action. Actual usable capacity, unmet demand and service quality.

SHARED domain decision contracts — Validation required. Domain decision rules and matching fictional examples. Local comparisons, constraints, source matching, sorting and follow-up proposals; developer checks do not establish scientific or client approval.

Institution and data context

Water Resources Board services — Institution publication. Full method locator not established. Institutional context; does not establish the calculation or local approval.
Water supply and sanitation project completion report — Institution publication. World Bank ICR00005929: contents, results framework and efficiency analysis. Institutional context; does not establish the calculation or local approval.
WHO water safety planning — Institution publication. Full method locator not established. Institutional context; does not establish the calculation or local approval.

Confirm local scope, data rights, parameters and responsible roles in this Institution review. Published components retain their source; they do not approve the local application.

What must change? Include corrected fields, rules, limits or words.Who supplies the data, who checks it, and who makes the decision?How often is this decision needed? What would make it urgent?

7. Check pressure outside reviewed operating conditionsDEC-DP22-007 · Pressure management · Suggested priority: High

Try this decision

Investigate pressure outside reviewed operating conditions.

Validation required

Method. Compare the measured value only with matching parameter, unit, use and averaging period. Retain limit source/version and censored-result status.

Next step. Outside example comparison bounds. Refer a confirmed nonconformance for authorized response, resample, or investigate the method.

Inputs, example and sources

Keep the same place, observation period, definitions, units and source versions.

Analysis inputs. Parameter and applicable use; Measured result [m head]; Example lower comparison bound [m head]; Example upper comparison bound [m head]; Original and limit unit; Sampling and analytical method/version; Limit source, version and use; Parameter, unit, use and averaging period match; Result is below a reporting/detection limit; Averaging interval, sampling depth or process basis

Other required evidence. Zone; pressure series; service requirements; pipe condition; operating limits.

Fictional worked example · 2025

Laggala Pallegama — pressure management · Laggala Pallegama

Input or result	Value	Unit
Parameter and applicable use	Service pressure at stated node/time
Measured result	8	m head
Example lower comparison bound	10	m head
Example upper comparison bound	35	m head
Original and limit unit	m head
Sampling and analytical method/version	Sample laboratory method
Limit source, version and use	Fictional comparison bounds; not a regulatory limit
Parameter, unit, use and averaging period match	Yes
Result is below a reporting/detection limit	No
Averaging interval, sampling depth or process basis	Sample stated sampling/averaging basis
Measured value	8	m head

Example bounds establish no compliance or diagnosis. Ambient, drinking-water, effluent, crop, food, air and noise standards are not interchangeable. A censored result is not an exact zero.

Proposed checking role. Water utility engineer, quality specialist and service/finance reviewer.

After the action. Follow-up compliance, exposure/service condition and corrective closure.

SHARED domain decision contracts — Validation required. Domain decision rules and matching fictional examples. Local comparisons, constraints, source matching, sorting and follow-up proposals; developer checks do not establish scientific or client approval.

Institution and data context

Water Resources Board services — Institution publication. Full method locator not established. Institutional context; does not establish the calculation or local approval.
Water supply and sanitation project completion report — Institution publication. World Bank ICR00005929: contents, results framework and efficiency analysis. Institutional context; does not establish the calculation or local approval.
WHO water safety planning — Institution publication. Full method locator not established. Institutional context; does not establish the calculation or local approval.

Confirm local scope, data rights, parameters and responsible roles in this Institution review. Published components retain their source; they do not approve the local application.

What must change? Include corrected fields, rules, limits or words.Who supplies the data, who checks it, and who makes the decision?How often is this decision needed? What would make it urgent?

8. Choose what to handle first: pipe rehabilitation using verified asset conditionDEC-DP22-008 · Pipe replacement · Suggested priority: High

Try this decision

Prioritize pipe rehabilitation using verified asset condition.

Validation required

Method. Open age = assessment date − received date. Days past due = max(0, assessment date − recorded due date) for open cases. Show documented critical conditions separately.

Next step. Follow up overdue case. Authorize feasible repair through the proper work process, inspect further, or restrict unsafe use.

Inputs, example and sources

Keep the same place, observation period, definitions, units and source versions.

Analysis inputs. Received or defect observed; Recorded due date; Assessment date; Case/work closed; Documented critical unresolved condition; Responsible office or maintainer; Actual closure date when closed

Other required evidence. Pipe ID; bursts; material; condition; service criticality; replacement costs.

Fictional worked example · 2025

Laggala Pallegama — pipe replacement · Laggala Pallegama

Input or result	Value	Unit
Received or defect observed	2025-04-01
Recorded due date	2025-06-01
Assessment date	2025-06-30
Case/work closed	No
Documented critical unresolved condition	Unknown
Responsible office or maintainer	Proposed responsible office
Actual closure date when closed
Open days past due	29	days
Calendar age	90	days

Example due dates are not legal service standards. Do not alter statutory deadlines by silently subtracting pauses, or infer severity from age alone.

Proposed checking role. Water utility engineer, quality specialist and service/finance reviewer.

After the action. Verified defect closure, service availability and repeat failures.

SHARED domain decision contracts — Validation required. Domain decision rules and matching fictional examples. Local comparisons, constraints, source matching, sorting and follow-up proposals; developer checks do not establish scientific or client approval.

Institution and data context

Water Resources Board services — Institution publication. Full method locator not established. Institutional context; does not establish the calculation or local approval.
Water supply and sanitation project completion report — Institution publication. World Bank ICR00005929: contents, results framework and efficiency analysis. Institutional context; does not establish the calculation or local approval.
WHO water safety planning — Institution publication. Full method locator not established. Institutional context; does not establish the calculation or local approval.

Confirm local scope, data rights, parameters and responsible roles in this Institution review. Published components retain their source; they do not approve the local application.

What must change? Include corrected fields, rules, limits or words.Who supplies the data, who checks it, and who makes the decision?How often is this decision needed? What would make it urgent?

9. Select pumping systems for energy-efficiency appraisalDEC-DP22-009 · Pump efficiency · Suggested priority: High

Try this decision

Select pumping systems for energy-efficiency appraisal.

Validation required

Method. Electric energy consumed / Water pumped, for the same product, process and period.

Next step. Review evidence. Investigate low productivity, compare practices, or improve the input/output measurements.

Inputs, example and sources

Keep the same place, observation period, definitions, units and source versions.

Analysis inputs. Electric energy consumed [kWh]; Water pumped [m³]

Other required evidence. Water volume; energy kWh; pumping head; pump condition; operating hours.

Fictional worked example · 2025

Laggala Pallegama — pump efficiency · Laggala Pallegama

Input or result	Value	Unit
Electric energy consumed	3,128	kWh
Water pumped	18,000	m³
Specific energy use	0.174	kWh/m³

Proposed checking role. Water utility engineer, quality specialist and service/finance reviewer.

After the action. Output per relevant input alongside quality and resource impacts.

SHARED domain decision contracts — Validation required. Domain decision rules and matching fictional examples. Local comparisons, constraints, source matching, sorting and follow-up proposals; developer checks do not establish scientific or client approval.

Institution and data context

Water Resources Board services — Institution publication. Full method locator not established. Institutional context; does not establish the calculation or local approval.
Water supply and sanitation project completion report — Institution publication. World Bank ICR00005929: contents, results framework and efficiency analysis. Institutional context; does not establish the calculation or local approval.
WHO water safety planning — Institution publication. Full method locator not established. Institutional context; does not establish the calculation or local approval.

Confirm local scope, data rights, parameters and responsible roles in this Institution review. Published components retain their source; they do not approve the local application.

What must change? Include corrected fields, rules, limits or words.Who supplies the data, who checks it, and who makes the decision?How often is this decision needed? What would make it urgent?

10. Schedule verification of suspect customer and bulk metersDEC-DP22-010 · Meter replacement · Suggested priority: Medium

Try this decision

Schedule verification of suspect customer and bulk meters.

Validation required

Method. Open age = assessment date − received date. Days past due = max(0, assessment date − recorded due date) for open cases. Show documented critical conditions separately.

Next step. Follow up overdue case. Authorize feasible repair through the proper work process, inspect further, or restrict unsafe use.

Inputs, example and sources

Keep the same place, observation period, definitions, units and source versions.

Other required evidence. Meter ID; age; accuracy tests; consumption anomalies; replacement cost.

Fictional worked example · 2025

Laggala Pallegama — meter replacement · Laggala Pallegama

Input or result	Value	Unit
Received or defect observed	2025-04-01
Recorded due date	2025-06-01
Assessment date	2025-06-30
Case/work closed	No
Documented critical unresolved condition	Unknown
Responsible office or maintainer	Proposed responsible office
Actual closure date when closed
Open days past due	29	days
Calendar age	90	days

Example due dates are not legal service standards. Do not alter statutory deadlines by silently subtracting pauses, or infer severity from age alone.

Proposed checking role. Water utility engineer, quality specialist and service/finance reviewer.

After the action. Verified defect closure, service availability and repeat failures.

SHARED domain decision contracts — Validation required. Domain decision rules and matching fictional examples. Local comparisons, constraints, source matching, sorting and follow-up proposals; developer checks do not establish scientific or client approval.

Institution and data context

Water Resources Board services — Institution publication. Full method locator not established. Institutional context; does not establish the calculation or local approval.
Water supply and sanitation project completion report — Institution publication. World Bank ICR00005929: contents, results framework and efficiency analysis. Institutional context; does not establish the calculation or local approval.
WHO water safety planning — Institution publication. Full method locator not established. Institutional context; does not establish the calculation or local approval.

Confirm local scope, data rights, parameters and responsible roles in this Institution review. Published components retain their source; they do not approve the local application.

What must change? Include corrected fields, rules, limits or words.Who supplies the data, who checks it, and who makes the decision?How often is this decision needed? What would make it urgent?

11. Address recurrent and prolonged supply outagesDEC-DP22-011 · Supply interruptions · Suggested priority: High

Try this decision

Address recurrent and prolonged supply outages.

Validation required

Method. Time availability =100 ×(scheduled−non-overlapping outage)/scheduled. Request success =100 ×(requests−failed)/requests. Response time is a separate measure.

Next step. Review evidence. Repair recurring faults, revise service capacity, or escalate dependencies.

Inputs, example and sources

Keep the same place, observation period, definitions, units and source versions.

Analysis inputs. Scheduled observation window [hours]; Union of qualifying outage intervals [hours]; Eligible service requests [requests]; Failed eligible requests [requests]; Measured response time [ms]

Other required evidence. Outage start; end; affected connections; cause; planned status; service objective.

Fictional worked example · 2025

Laggala Pallegama — supply interruptions · Laggala Pallegama

Input or result	Value	Unit
Scheduled observation window	168	hours
Union of qualifying outage intervals	13	hours
Eligible service requests	1,000	requests
Failed eligible requests	40	requests
Measured response time	800	ms
Time availability	92.262	%
Request success	96	%
Measured response time	800	ms

State maintenance exclusions, operating window, probe, workload and service objective. Observed response time is not a p95 claim unless the percentile is actually measured.

Proposed checking role. Water utility engineer, quality specialist and service/finance reviewer.

After the action. Verified availability, interruptions and actual service delivery.

SHARED domain decision contracts — Validation required. Domain decision rules and matching fictional examples. Local comparisons, constraints, source matching, sorting and follow-up proposals; developer checks do not establish scientific or client approval.

Institution and data context

Water Resources Board services — Institution publication. Full method locator not established. Institutional context; does not establish the calculation or local approval.
Water supply and sanitation project completion report — Institution publication. World Bank ICR00005929: contents, results framework and efficiency analysis. Institutional context; does not establish the calculation or local approval.
WHO water safety planning — Institution publication. Full method locator not established. Institutional context; does not establish the calculation or local approval.

Confirm local scope, data rights, parameters and responsible roles in this Institution review. Published components retain their source; they do not approve the local application.

What must change? Include corrected fields, rules, limits or words.Who supplies the data, who checks it, and who makes the decision?How often is this decision needed? What would make it urgent?

12. Compare alternative sources under seasonal stressDEC-DP22-012 · Source security · Suggested priority: High

Try this decision

Compare alternative sources under seasonal stress.

Validation required

Method. Budget minus option cost. Compare benefits, adverse effects and mandatory constraints separately; no weighted score or automatic best option.

Next step. Compare feasible trade-offs. Choose a feasible alternative with rationale and conditions, commission evidence, or defer.

Inputs, example and sources

Keep the same place, observation period, definitions, units and source versions.

Analysis inputs. Option cost [LKR]; Available budget [LKR]; Mandatory constraints; Expected benefit and its evidence; Resource needs and adverse effects

Other required evidence. Source yield; demand; quality; drought exposure; treatment costs; permissions.

Fictional worked example · 2025

Leak detection · Laggala Pallegama

Input or result	Value	Unit
Option cost	1,500,000	LKR
Available budget	1,800,000	LKR
Mandatory constraints	Met
Expected benefit and its evidence	Compare alternative sources under seasonal stress; Source yield and demand evidence needed
Resource needs and adverse effects	Sample water, labour, access and safeguard trade-offs
Budget remaining after option	300,000	LKR

Affordability does not prove feasibility or scientific suitability. A missing mandatory condition keeps an option unresolved.

Proposed checking role. Water utility engineer, quality specialist and service/finance reviewer.

After the action. Verified benefits, costs and adverse effects versus the agreed baseline.

SHARED domain decision contracts — Validation required. Domain decision rules and matching fictional examples. Local comparisons, constraints, source matching, sorting and follow-up proposals; developer checks do not establish scientific or client approval.

Institution and data context

Water Resources Board services — Institution publication. Full method locator not established. Institutional context; does not establish the calculation or local approval.
Water supply and sanitation project completion report — Institution publication. World Bank ICR00005929: contents, results framework and efficiency analysis. Institutional context; does not establish the calculation or local approval.
WHO water safety planning — Institution publication. Full method locator not established. Institutional context; does not establish the calculation or local approval.

Confirm local scope, data rights, parameters and responsible roles in this Institution review. Published components retain their source; they do not approve the local application.

What must change? Include corrected fields, rules, limits or words.Who supplies the data, who checks it, and who makes the decision?How often is this decision needed? What would make it urgent?

13. Choose what to handle first: delayed service-connection applicationsDEC-DP22-013 · Connection requests · Suggested priority: Medium

Try this decision

Prioritize delayed service-connection applications.

Validation required

Method. Open age = assessment date − received date. Days past due = max(0, assessment date − recorded due date) for open cases. Show documented critical conditions separately.

Next step. Follow up overdue case. Assign the next permitted case, escalate an overdue case, request evidence, or close with proof.

Inputs, example and sources

Keep the same place, observation period, definitions, units and source versions.

Other required evidence. Application; receipt date; completeness; due date; network availability; owner.

Fictional worked example · 2025

Laggala Pallegama — connection requests · Laggala Pallegama

Input or result	Value	Unit
Received or defect observed	2025-04-01
Recorded due date	2025-06-01
Assessment date	2025-06-30
Case/work closed	No
Documented critical unresolved condition	Unknown
Responsible office or maintainer	Proposed responsible office
Actual closure date when closed
Open days past due	29	days
Calendar age	90	days

Example due dates are not legal service standards. Do not alter statutory deadlines by silently subtracting pauses, or infer severity from age alone.

Proposed checking role. Water utility engineer, quality specialist and service/finance reviewer.

After the action. Response time, aged cases, completion and reopened cases.

SHARED domain decision contracts — Validation required. Domain decision rules and matching fictional examples. Local comparisons, constraints, source matching, sorting and follow-up proposals; developer checks do not establish scientific or client approval.

Institution and data context

Water Resources Board services — Institution publication. Full method locator not established. Institutional context; does not establish the calculation or local approval.
Water supply and sanitation project completion report — Institution publication. World Bank ICR00005929: contents, results framework and efficiency analysis. Institutional context; does not establish the calculation or local approval.
WHO water safety planning — Institution publication. Full method locator not established. Institutional context; does not establish the calculation or local approval.

Confirm local scope, data rights, parameters and responsible roles in this Institution review. Published components retain their source; they do not approve the local application.

What must change? Include corrected fields, rules, limits or words.Who supplies the data, who checks it, and who makes the decision?How often is this decision needed? What would make it urgent?

14. Escalate unresolved water and sanitation complaintsDEC-DP22-014 · Customer complaints · Suggested priority: Medium

Try this decision

Escalate unresolved water and sanitation complaints.

Validation required

Method. Open age = assessment date − received date. Days past due = max(0, assessment date − recorded due date) for open cases. Show documented critical conditions separately.

Next step. Follow up overdue case. Assign the next permitted case, escalate an overdue case, request evidence, or close with proof.

Inputs, example and sources

Keep the same place, observation period, definitions, units and source versions.

Other required evidence. Complaint; location; category; received date; response; due date; evidence.

Fictional worked example · 2025

Laggala Pallegama — customer complaints · Laggala Pallegama

Input or result	Value	Unit
Received or defect observed	2025-04-01
Recorded due date	2025-06-01
Assessment date	2025-06-30
Case/work closed	No
Documented critical unresolved condition	Unknown
Responsible office or maintainer	Proposed responsible office
Actual closure date when closed
Open days past due	29	days
Calendar age	90	days

Example due dates are not legal service standards. Do not alter statutory deadlines by silently subtracting pauses, or infer severity from age alone.

Proposed checking role. Water utility engineer, quality specialist and service/finance reviewer.

After the action. Response time, aged cases, completion and reopened cases.

SHARED domain decision contracts — Validation required. Domain decision rules and matching fictional examples. Local comparisons, constraints, source matching, sorting and follow-up proposals; developer checks do not establish scientific or client approval.

Institution and data context

Water Resources Board services — Institution publication. Full method locator not established. Institutional context; does not establish the calculation or local approval.
Water supply and sanitation project completion report — Institution publication. World Bank ICR00005929: contents, results framework and efficiency analysis. Institutional context; does not establish the calculation or local approval.
WHO water safety planning — Institution publication. Full method locator not established. Institutional context; does not establish the calculation or local approval.

Confirm local scope, data rights, parameters and responsible roles in this Institution review. Published components retain their source; they do not approve the local application.

What must change? Include corrected fields, rules, limits or words.Who supplies the data, who checks it, and who makes the decision?How often is this decision needed? What would make it urgent?

15. Prevent treatment interruptions from chemical shortagesDEC-DP22-015 · Chemical supply · Suggested priority: High

Try this decision

Prevent treatment interruptions from chemical shortages.

Validation required

Method. Usable = physical−quarantined−expired (non-overlapping groups). Available = usable−commitments. Additional gap = max(0, new demand−available).

Next step. Review replenishment gap. Reorder approved quantities, redistribute stock, or quarantine affected lots.

Inputs, example and sources

Keep the same place, observation period, definitions, units and source versions.

Analysis inputs. Physical stock [kg chemical]; Quarantined stock [kg chemical]; Expired stock [kg chemical]; Committed usable stock [kg chemical]; Additional demand [kg chemical]; Supplier lead time [days]; Remaining shelf life of usable stock [days]

Other required evidence. Chemical stock; approved consumption; lead time; expiry; storage conditions.

Fictional worked example · 2025

Laggala Pallegama — chemical supply · Laggala Pallegama

Input or result	Value	Unit
Physical stock	1,200	kg chemical
Quarantined stock	100	kg chemical
Expired stock	50	kg chemical
Committed usable stock	740	kg chemical
Additional demand	500	kg chemical
Supplier lead time	14	days
Remaining shelf life of usable stock	30	days
Uncommitted usable stock	310	kg chemical
Additional demand gap	190	kg chemical

Stock must be compatible by item, lot, condition, expiry and delivery window. Do not allocate quarantined/expired stock or silently erase overcommitment.

Proposed checking role. Water utility engineer, quality specialist and service/finance reviewer.

After the action. Stockouts, expiry, losses and verified lot traceability.

SHARED domain decision contracts — Validation required. Domain decision rules and matching fictional examples. Local comparisons, constraints, source matching, sorting and follow-up proposals; developer checks do not establish scientific or client approval.

Institution and data context

Water Resources Board services — Institution publication. Full method locator not established. Institutional context; does not establish the calculation or local approval.
Water supply and sanitation project completion report — Institution publication. World Bank ICR00005929: contents, results framework and efficiency analysis. Institutional context; does not establish the calculation or local approval.
WHO water safety planning — Institution publication. Full method locator not established. Institutional context; does not establish the calculation or local approval.

Confirm local scope, data rights, parameters and responsible roles in this Institution review. Published components retain their source; they do not approve the local application.

What must change? Include corrected fields, rules, limits or words.Who supplies the data, who checks it, and who makes the decision?How often is this decision needed? What would make it urgent?

16. Check effluent performance against permit conditionsDEC-DP22-016 · Wastewater treatment · Suggested priority: High

Try this decision

Investigate effluent performance against permit conditions.

Validation required

Method. Compare the measured value only with matching parameter, unit, use and averaging period. Retain limit source/version and censored-result status.

Next step. Outside example comparison bounds. Refer a confirmed nonconformance for authorized response, resample, or investigate the method.

Inputs, example and sources

Keep the same place, observation period, definitions, units and source versions.

Analysis inputs. Parameter and applicable use; Measured result [mg/L]; Example lower comparison bound [mg/L]; Example upper comparison bound [mg/L]; Original and limit unit; Sampling and analytical method/version; Limit source, version and use; Parameter, unit, use and averaging period match; Result is below a reporting/detection limit; Averaging interval, sampling depth or process basis

Other required evidence. Plant; effluent sample; parameter; load; permit limit; period; lab method.

Fictional worked example · 2025

Laggala Pallegama — wastewater treatment · Laggala Pallegama

Input or result	Value	Unit
Parameter and applicable use	Effluent BOD5
Measured result	38	mg/L
Example lower comparison bound	0	mg/L
Example upper comparison bound	30	mg/L
Original and limit unit	mg/L
Sampling and analytical method/version	Sample laboratory method
Limit source, version and use	Fictional comparison bounds; not a regulatory limit
Parameter, unit, use and averaging period match	Yes
Result is below a reporting/detection limit	No
Averaging interval, sampling depth or process basis	Sample stated sampling/averaging basis
Measured value	38	mg/L

Example bounds establish no compliance or diagnosis. Ambient, drinking-water, effluent, crop, food, air and noise standards are not interchangeable. A censored result is not an exact zero.

Proposed checking role. Water utility engineer, quality specialist and service/finance reviewer.

After the action. Follow-up compliance, exposure/service condition and corrective closure.

SHARED domain decision contracts — Validation required. Domain decision rules and matching fictional examples. Local comparisons, constraints, source matching, sorting and follow-up proposals; developer checks do not establish scientific or client approval.

Institution and data context

Water Resources Board services — Institution publication. Full method locator not established. Institutional context; does not establish the calculation or local approval.
Water supply and sanitation project completion report — Institution publication. World Bank ICR00005929: contents, results framework and efficiency analysis. Institutional context; does not establish the calculation or local approval.
WHO water safety planning — Institution publication. Full method locator not established. Institutional context; does not establish the calculation or local approval.

Confirm local scope, data rights, parameters and responsible roles in this Institution review. Published components retain their source; they do not approve the local application.

What must change? Include corrected fields, rules, limits or words.Who supplies the data, who checks it, and who makes the decision?How often is this decision needed? What would make it urgent?

17. Choose what to handle first: investigation of sewer overflow risksDEC-DP22-017 · Sewer overflows · Suggested priority: High

Try this decision

Prioritize investigation of sewer overflow risks.

Validation required

Method. Check each required item and retain its reference. A documented item is not a scientific, legal or institutional approval.

Next step. Complete the evidence. Select a feasible control, escalate beyond authority, or seek technical inspection.

Inputs, example and sources

Keep the same place, observation period, definitions, units and source versions.

Analysis inputs. Incident history; Incident history evidence reference; pipe condition; pipe condition evidence reference; flow; flow evidence reference; sensitive receptors; sensitive receptors evidence reference; rainfall; rainfall evidence reference; controls; controls evidence reference; Documented unresolved critical condition; Evidence observation date; Existing control and its evidence; Competent recipient

Other required evidence. Incident history; pipe condition; flow; sensitive receptors; rainfall; controls.

Fictional worked example · 2025

Laggala Pallegama — sewer overflows · Laggala Pallegama

Input or result	Value	Unit
Incident history	Missing
Incident history evidence reference
pipe condition	Documented
pipe condition evidence reference	Sample Laggala Pallegama field register / 2025
flow	Documented
flow evidence reference	Sample Laggala Pallegama field register / 2025
sensitive receptors	Documented
sensitive receptors evidence reference	Sample Laggala Pallegama field register / 2025
rainfall	Documented
rainfall evidence reference	Sample Laggala Pallegama field register / 2025
controls	Documented
controls evidence reference	Sample Laggala Pallegama field register / 2025
Documented unresolved critical condition	Unknown
Evidence observation date	2025-06-30
Existing control and its evidence	Sample documented control
Competent recipient	Responsible specialist / duty authority
Evidence gaps	1	items

Show the hazard, exposure and verified controls separately. No generic score, probability, diagnosis, site clearance or official warning is derived from a count.

Proposed checking role. Water utility engineer, quality specialist and service/finance reviewer.

After the action. Verified control effectiveness and residual risk with evidence.

SHARED domain decision contracts — Validation required. Domain decision rules and matching fictional examples. Local comparisons, constraints, source matching, sorting and follow-up proposals; developer checks do not establish scientific or client approval.

Institution and data context

Water Resources Board services — Institution publication. Full method locator not established. Institutional context; does not establish the calculation or local approval.
Water supply and sanitation project completion report — Institution publication. World Bank ICR00005929: contents, results framework and efficiency analysis. Institutional context; does not establish the calculation or local approval.
WHO water safety planning — Institution publication. Full method locator not established. Institutional context; does not establish the calculation or local approval.

Confirm local scope, data rights, parameters and responsible roles in this Institution review. Published components retain their source; they do not approve the local application.

What must change? Include corrected fields, rules, limits or words.Who supplies the data, who checks it, and who makes the decision?How often is this decision needed? What would make it urgent?

18. Compare water-service investment alternativesDEC-DP22-018 · Capital investments · Suggested priority: Medium

Try this decision

Compare water-service investment alternatives.

Verified published formula · Discounted cash-flow NPV

Method. NPV = −initial investment + sum of year1…5 net cash flows discounted at the stated annual rate, including residual value once in year5.

Next step. Review evidence. Compare feasible investments, adjust the scope, or defer pending finance/evidence.

Inputs, example and sources

Food and Agriculture Organization of the United Nations · Guidelines for defining financial economic environmental and social information
Institution publication · Sections 2.2.2 and 2.2.3, discounting and Net Present Value

The five-year horizon, discount rate and cash assumptions are local settings. Verification does not approve an investment or loan.

Keep the same place, observation period, definitions, units and source versions.

Analysis inputs. Initial investment [LKR]; Net cash flow year1 [LKR]; Net cash flow year2 [LKR]; Net cash flow year3 [LKR]; Net cash flow year4 [LKR]; Net cash flow year5 [LKR]; Residual value at end of year5 [LKR]; Example discount rate [%]

Other required evidence. Capital cost; operating cost; service benefit; asset life; finance; discount rate.

Fictional worked example · 2025

Laggala Pallegama — capital investments · Laggala Pallegama

Input or result	Value	Unit
Initial investment	2,400,000	LKR
Net cash flow year1	400,000	LKR
Net cash flow year2	550,000	LKR
Net cash flow year3	680,000	LKR
Net cash flow year4	720,000	LKR
Net cash flow year5	760,000	LKR
Residual value at end of year5	120,000	LKR
Example discount rate	8	%
Five-year net present value	109,847.353	LKR

Match currency, price year, real/nominal basis and cash-flow timing. The example rate and five-year horizon are assumptions, not institutional financing terms; no credit approval follows.

Proposed checking role. Water utility engineer, quality specialist and service/finance reviewer.

After the action. Realized cash flows, benefits and costs versus the approved appraisal.

FAO Guidelines for financial economic environmental and social information — Institution publication. Section2 discounted cash-flow analysis and NPV. Published discounted cash-flow method; local rate, horizon and cash assumptions are separate.
SHARED domain decision contracts — Validation required. Domain decision rules and matching fictional examples. Local comparisons, constraints, source matching, sorting and follow-up proposals; developer checks do not establish scientific or client approval.

Institution and data context

Water Resources Board services — Institution publication. Full method locator not established. Institutional context; does not establish the calculation or local approval.
Water supply and sanitation project completion report — Institution publication. World Bank ICR00005929: contents, results framework and efficiency analysis. Institutional context; does not establish the calculation or local approval.
WHO water safety planning — Institution publication. Full method locator not established. Institutional context; does not establish the calculation or local approval.

Confirm local scope, data rights, parameters and responsible roles in this Institution review. Published components retain their source; they do not approve the local application.

What must change? Include corrected fields, rules, limits or words.Who supplies the data, who checks it, and who makes the decision?How often is this decision needed? What would make it urgent?

19. Target support to poorly functioning community water schemesDEC-DP22-019 · Community systems · Suggested priority: Medium

Try this decision

Target support to poorly functioning community water schemes.

Validation required

Method. 100 × distinct covered eligible units / eligible frame. Known uncovered = frame − covered − unknown.

Next step. Review evidence. Select eligible underserved units for outreach, investigate missing coverage, or revise the verified frame.

Inputs, example and sources

Keep the same place, observation period, definitions, units and source versions.

Analysis inputs. Required eligible frame [households]; Distinct members of that frame covered [households]; Frame members with unknown coverage [households]

Other required evidence. Scheme frame; functionality; trained operators; quality monitoring; maintenance evidence.

Fictional worked example · 2025

Laggala Pallegama — community systems · Laggala Pallegama

Input or result	Value	Unit
Required eligible frame	100	households
Distinct members of that frame covered	65	households
Frame members with unknown coverage	5	households
Verified coverage	65	%
Known uncovered	30	households
Unknown coverage	5	households

Count each eligible unit once for the selected service and period. Received messages, attendance, adoption and outcomes are separate measures.

Proposed checking role. Water utility engineer, quality specialist and service/finance reviewer.

After the action. Verified eligible units receiving service and remaining unmet need.

SHARED domain decision contracts — Validation required. Domain decision rules and matching fictional examples. Local comparisons, constraints, source matching, sorting and follow-up proposals; developer checks do not establish scientific or client approval.

Institution and data context

Water Resources Board services — Institution publication. Full method locator not established. Institutional context; does not establish the calculation or local approval.
Water supply and sanitation project completion report — Institution publication. World Bank ICR00005929: contents, results framework and efficiency analysis. Institutional context; does not establish the calculation or local approval.
WHO water safety planning — Institution publication. Full method locator not established. Institutional context; does not establish the calculation or local approval.

Confirm local scope, data rights, parameters and responsible roles in this Institution review. Published components retain their source; they do not approve the local application.

What must change? Include corrected fields, rules, limits or words.Who supplies the data, who checks it, and who makes the decision?How often is this decision needed? What would make it urgent?

20. Resolve inconsistent asset and customer service-area referencesDEC-DP22-020 · Network records · Suggested priority: Lower

Try this decision

Resolve inconsistent asset and customer service-area references.

Validation required

Method. Compare original definitions, identifiers, units and versions against documented equivalence evidence. Preserve conflicts and unresolved mappings; do not subtract category labels or silently merge records.

Next step. Resolve source disagreement. Assign discrepancies to the custodian, accept documented corrections, or retain unresolved versions.

Inputs, example and sources

Keep the same place, observation period, definitions, units and source versions.

Analysis inputs. Original source value/definition; Comparison source value/definition; Original version; Comparison version; Documented equivalence evidence

Other required evidence. Asset IDs; network geometry; service zones; source edition; join evidence.

Fictional worked example · 2025

Laggala Pallegama — network records · Laggala Pallegama

Input or result	Value	Unit
Original source value/definition	Asset IDs: primary register entry
Comparison source value/definition	Asset IDs: conflicting source return
Original version	Sample version1
Comparison version	Sample version2
Documented equivalence evidence	Unresolved
Unresolved equivalence items	1	items

Proposed checking role. Water utility engineer, quality specialist and service/finance reviewer.

After the action. Discrepancies resolved with evidence and repeat error rate.

SHARED domain decision contracts — Validation required. Domain decision rules and matching fictional examples. Local comparisons, constraints, source matching, sorting and follow-up proposals; developer checks do not establish scientific or client approval.

Institution and data context

Water Resources Board services — Institution publication. Full method locator not established. Institutional context; does not establish the calculation or local approval.
Water supply and sanitation project completion report — Institution publication. World Bank ICR00005929: contents, results framework and efficiency analysis. Institutional context; does not establish the calculation or local approval.
WHO water safety planning — Institution publication. Full method locator not established. Institutional context; does not establish the calculation or local approval.

Confirm local scope, data rights, parameters and responsible roles in this Institution review. Published components retain their source; they do not approve the local application.

What must change? Include corrected fields, rules, limits or words.Who supplies the data, who checks it, and who makes the decision?How often is this decision needed? What would make it urgent?

4. Existing data forms for your institution

Check which existing source fields can supply the decision inputs.

Ground Water Prospect · Water Systems

Existing form reference: ce5ed1b99bb3102f

Field	Unit	Required
ID	Confirm if needed	No
Aquifier	Confirm if needed	No
Description	Confirm if needed	No
st_area(shape)	Confirm if needed	No
st_length(shape)	Confirm if needed	No

Ground Water · Water Systems

Existing form reference: 8d60801843516765

Field	Unit	Required
ID	Confirm if needed	No
Aquifier	Confirm if needed	No
Original FID	Confirm if needed	No
Description	Confirm if needed	No
st_area(shape)	Confirm if needed	No
st_length(shape)	Confirm if needed	No

Village Tank · Water Systems

Existing form reference: ba56f4a118b8defb

Field	Unit	Required
Number	Confirm if needed	No
ID	Confirm if needed	No
Data	Confirm if needed	No
Sheet	Confirm if needed	No
X	Confirm if needed	No
Y	Confirm if needed	No
XCOORD	Confirm if needed	No
YCOORD	Confirm if needed	No
Sheet Number	Confirm if needed	No
Quantity	Confirm if needed	No
Description	Confirm if needed	No

Village Anicut · Water Systems

Existing form reference: f173e69599dc5331

Field	Unit	Required
Serial Number	Confirm if needed	No
XCOORD	Confirm if needed	No
YCOORD	Confirm if needed	No
Code	Confirm if needed	No
Description	Confirm if needed	No

Basin · Water Systems

Existing form reference: aab19eb1fe26e99f

Field	Unit	Required
Basin Name	Confirm if needed	No
Number	Confirm if needed	No
Boundary	Confirm if needed	No
River Basin	Confirm if needed	No
area	Confirm if needed	No
Perimeter	Confirm if needed	No
Watershed	Confirm if needed	No
ID	Confirm if needed	No
Description	Confirm if needed	No
st_area(shape)	Confirm if needed	No
st_length(shape)	Confirm if needed	No

Water Shed · Water Systems

Existing form reference: f0192290b75919c0

Field	Unit	Required
Watershed_Type	Confirm if needed	No
Watershed_Name	Confirm if needed	No
Catchment_Name	Confirm if needed	No
Basin_Name	Confirm if needed	No
Region_Name	Confirm if needed	No
Description	Confirm if needed	No
Perimeter	Confirm if needed	No
area	Confirm if needed	No
Watershed_Number	Confirm if needed	No
Hectares	Confirm if needed	No
st_area(shape)	Confirm if needed	No
st_length(shape)	Confirm if needed	No

Dam · Water Systems

Existing form reference: ccd11935ddd740eb

Field	Unit	Required
Dam Name	Confirm if needed	No
Dam_Type	Confirm if needed	No
Dam Storage Capacity	Confirm if needed	No
Hydraulic Head Size meter	Confirm if needed	No
Dam Size	Confirm if needed	No
Dam Construction Type	Confirm if needed	No
Dam Construction Material	Confirm if needed	No
Dam Structural Behaviour	Confirm if needed	No
Creation Method	Confirm if needed	No
Year of Creation	Confirm if needed	No
Revision Method	Confirm if needed	No
Year of Revision	Confirm if needed	No
GFCODE	Confirm if needed	No
Hydro Point ID	Confirm if needed	No
Description	Confirm if needed	No
st_length(shape)	Confirm if needed	No

River Mouth Locations · Water Systems

Existing form reference: 8123426118305c93

Field	Unit	Required
Name	Confirm if needed	No
Capture_Type	Confirm if needed	No
WB_Number	Confirm if needed	No
Point_X	Confirm if needed	No
Point_Y	Confirm if needed	No
Zone_Name	Confirm if needed	No

Stream · Water Systems

Existing form reference: 46072ad6caa5f83d

Field	Unit	Required
Stream Type	Confirm if needed	No
Stream Name	Confirm if needed	No
Length In Km	Confirm if needed	No
Width In Meters	Confirm if needed	No
Hydro Line ID	Confirm if needed	No
Creation Method	Confirm if needed	No
Year of Creation	Confirm if needed	No
Revision Method	Confirm if needed	No
Year of Revision	Confirm if needed	No
GFCODE	Confirm if needed	No
Description	Confirm if needed	No
st_length(shape)	Confirm if needed	No

Pond · Water Systems

Existing form reference: 66361481a1066277

Field	Unit	Required
Pond_Type	Confirm if needed	No
Pond_Name	Confirm if needed	No
Capacity_Acre_Per_Feet	Confirm if needed	No
Perimeter_km	Confirm if needed	No
Area_In_sqkm	Confirm if needed	No
Depth_In_Meters	Confirm if needed	No
Spill_Level_MLS	Confirm if needed	No
Catchment_Area	Confirm if needed	No
Hydro_Area_ID	Confirm if needed	No
Creation_Method	Confirm if needed	No
Year_of_Creation	Confirm if needed	No
Revision_Method	Confirm if needed	No
Year_of_Revision	Confirm if needed	No
GFCODE	Confirm if needed	No
Description	Confirm if needed	No
st_area(shape)	Confirm if needed	No
st_length(shape)	Confirm if needed	No

Canal · Water Systems

Existing form reference: f38ab955cf2f6bd4

Field	Unit	Required
Canal Type	Confirm if needed	No
Canal Name	Confirm if needed	No
Length In Km	Confirm if needed	No
Width In Meters	Confirm if needed	No
Hydro Area ID	Confirm if needed	No
Creation Method	Confirm if needed	No
Year of Creation	Confirm if needed	No
Revision Method	Confirm if needed	No
Year of Revision	Confirm if needed	No
GFCODE	Confirm if needed	No
Description	Confirm if needed	No
st_area(shape)	Confirm if needed	No
st_length(shape)	Confirm if needed	No

Lake · Water Systems

Existing form reference: 1bb76fa1770b0049

Field	Unit	Required
Lake_Type	Confirm if needed	No
Lake_Name	Confirm if needed	No
Capacity_Acre_Per_Feet	Confirm if needed	No
Perimeter_km	Confirm if needed	No
Area_In_sqkm	Confirm if needed	No
Depth_In_Meters	Confirm if needed	No
Spill_Level_MLS	Confirm if needed	No
Catchment_Area	Confirm if needed	No
Hydro_Area_ID	Confirm if needed	No
Creation_Method	Confirm if needed	No
Year_of_Creation	Confirm if needed	No
Revision_Method	Confirm if needed	No
Year_of_Revision	Confirm if needed	No
GFCODE	Confirm if needed	No
Description	Confirm if needed	No
st_area(shape)	Confirm if needed	No
st_length(shape)	Confirm if needed	No

River · Water Systems

Existing form reference: d15540e8ecb12c69

Field	Unit	Required
River Type	Confirm if needed	No
River Name	Confirm if needed	No
Length_In_Km	Confirm if needed	No
Width_In_Meters	Confirm if needed	No
Hydro_Area_ID	Confirm if needed	No
Creation_Method	Confirm if needed	No
Year_of_Creation	Confirm if needed	No
Revision_Method	Confirm if needed	No
Year_of_Revision	Confirm if needed	No
GFCODE	Confirm if needed	No
Description	Confirm if needed	No
st_area(shape)	Confirm if needed	No
st_length(shape)	Confirm if needed	No

Lagoon · Water Systems

Existing form reference: 0f0d24cef4bd6481

Field	Unit	Required
Lagoon_Type	Confirm if needed	No
Lagoon Name	Confirm if needed	No
Primary Inflows	Confirm if needed	No
Primary_Inflows	Confirm if needed	No
Length_In_Km	Confirm if needed	No
Width_In_Km	Confirm if needed	No
Capacity_Acre_Per_Feet	Confirm if needed	No
Area_In_sqkm	Confirm if needed	No
Depth_In_Meters	Confirm if needed	No
Hydro_Area_ID	Confirm if needed	No
Creation_Method	Confirm if needed	No
Year_of_Creation	Confirm if needed	No
Revision_Method	Confirm if needed	No
Year_of_Revision	Confirm if needed	No
GFCODE	Confirm if needed	No
Description	Confirm if needed	No
st_area(shape)	Confirm if needed	No
st_length(shape)	Confirm if needed	No

Spill Point · Water Systems

Existing form reference: dd591850f1e639e2

Field	Unit	Required
Type	Confirm if needed	No
Name	Confirm if needed	No
Creation Method	Confirm if needed	No
Year of Creation	Confirm if needed	No
Revision Method	Confirm if needed	No
Year of Revision	Confirm if needed	No
GFCODE	Confirm if needed	No
Description	Confirm if needed	No

Sluice Point · Water Systems

Existing form reference: 70efb0310e727bec

Field	Unit	Required
Type Hydro point	Confirm if needed	No
Name	Confirm if needed	No
Creation Method	Confirm if needed	No
Year of Creation	Confirm if needed	No
Revision Method	Confirm if needed	No
Year of Revision	Confirm if needed	No
GFCODE	Confirm if needed	No
Description	Confirm if needed	No
hydro_point_id	Confirm if needed	No

Cascades · Water Systems

Existing form reference: a23c11282c20ec1d

Field	Unit	Required
RiverBasin Number	Confirm if needed	No
RiverBasin Name	Confirm if needed	No
SWS Number	Confirm if needed	No
SWS Name	Confirm if needed	No
Tank Cascade Number	Confirm if needed	No
Tank Cascade Name	Confirm if needed	No
Number of Tanks	Confirm if needed	No
Number of Tanks1	Confirm if needed	No
Climatic Zone	Confirm if needed	No
Remarks	Confirm if needed	No
area	Confirm if needed	No
Perimeter	Confirm if needed	No
Hectares	Confirm if needed	No
UP Code	Confirm if needed	No
Color Code	Confirm if needed	No
ID	Confirm if needed	No
Description	Confirm if needed	No
st_area(shape)	Confirm if needed	No
st_length(shape)	Confirm if needed	No

Sea Ports · Water Systems

Existing form reference: 7caa76b009c9aa66

Field	Unit	Required
Port Name	Confirm if needed	No
ID	Confirm if needed	No
Port Type	Confirm if needed	No
Description	Confirm if needed	No
GFCODE	Confirm if needed	No
Creation Method	Confirm if needed	No
Year of Creation	Confirm if needed	No
Revision Method	Confirm if needed	No
Year of Revision	Confirm if needed	No

Water Area · Water Systems

Existing form reference: d89ee67747f1e131

Field	Unit	Required
Type_Classification	Confirm if needed	No
Water Area Name	Confirm if needed	No
Creation Method	Confirm if needed	No
Year of Creation	Confirm if needed	No
Revision Method	Confirm if needed	No
Year of Revision	Confirm if needed	No
GFCODE	Confirm if needed	No
Description	Confirm if needed	No
Hydro_Area_ID	Confirm if needed	No
st_area(shape)	Confirm if needed	No
st_length(shape)	Confirm if needed	No

Water Fittings · Geospatial Evidence

Existing form reference: cf68d810309988ce

Field	Unit	Required
Fitting_Type	Confirm if needed	No
Material	Confirm if needed	No
Status	Confirm if needed	No
Rotation	Confirm if needed	No
Digitization_from	Confirm if needed	No
Map_Number	Confirm if needed	No
Update_Date	Confirm if needed	No
GID	Confirm if needed	No
Description	Confirm if needed	No

Water Meter · Geospatial Evidence

Existing form reference: 14c2ccb3f9d41ece

Field	Unit	Required
Meter_Type	Confirm if needed	No
Importance	Confirm if needed	No
Rotation	Confirm if needed	No
Digitization_from	Confirm if needed	No
Map_Number	Confirm if needed	No
Update_Date	Confirm if needed	No
GID	Confirm if needed	No
Description	Confirm if needed	No

Water Station · Geospatial Evidence

Existing form reference: d0aeab3fd60c3a9d

Field	Unit	Required
Station Type	Confirm if needed	No
Station Name	Confirm if needed	No
Suction Diameter	Confirm if needed	No
Deliver Diameter	Confirm if needed	No
Diameter Units	Confirm if needed	No
Rotation	Confirm if needed	No
Digitization From	Confirm if needed	No
Map Number	Confirm if needed	No
Update Date	Confirm if needed	No
GID	Confirm if needed	No
Description	Confirm if needed	No

Water Storage · Geospatial Evidence

Existing form reference: ae9ab4f456ba5f23

Field	Unit	Required
Storage Type	Confirm if needed	No
Name	Confirm if needed	No
Capacity	Confirm if needed	No
Water Level Top	Confirm if needed	No
Water Level Bottom	Confirm if needed	No
Overflow Level	Confirm if needed	No
Source Level	Confirm if needed	No
Inlet Size	Confirm if needed	No
Outlet Size	Confirm if needed	No
Rotation	Confirm if needed	No
Installed On	Confirm if needed	No
Digitization from	Confirm if needed	No
Map Number	Confirm if needed	No
Update Date	Confirm if needed	No
GID	Confirm if needed	No
Description	Confirm if needed	No

Water Valve · Geospatial Evidence

Existing form reference: c5ac68d0b95359c4

Field	Unit	Required
Valve_Type	Confirm if needed	No
Diameter	Confirm if needed	No
Diameter_Units	Confirm if needed	No
Material	Confirm if needed	No
Valve_ID	Confirm if needed	No
Status	Confirm if needed	No
Number_of_Turns	Confirm if needed	No
Open_Direction	Confirm if needed	No
Installed_Date	Confirm if needed	No
Rotation	Confirm if needed	No
Map_Number	Confirm if needed	No
Digitization_from	Confirm if needed	No
Update_Date	Confirm if needed	No
Description	Confirm if needed	No
GID	Confirm if needed	No

Water Pipe Line · Geospatial Evidence

Existing form reference: 5053ac757bff3e63

Field	Unit	Required
Line Type	Confirm if needed	No
Material	Confirm if needed	No
Diameter	Confirm if needed	No
Diameter Units	Confirm if needed	No
Project Name	Confirm if needed	No
Class	Confirm if needed	No
Laid On	Confirm if needed	No
Status	Confirm if needed	No
Map Number	Confirm if needed	No
Digitization from	Confirm if needed	No
File Number	Confirm if needed	No
Cement line	Confirm if needed	No
Year line	Confirm if needed	No
Update Date	Confirm if needed	No
st_length(shape)	Confirm if needed	No

Sewer Intercepter Manhole · Geospatial Evidence

Existing form reference: d413ae0270c31763

Field	Unit	Required
AccNo	Confirm if needed	No
Remarks	Confirm if needed	No
IC_Name	Confirm if needed	No
GID	Confirm if needed	No
Update_Date	Confirm if needed	No
Description	Confirm if needed	No

Sewer Manhole · Geospatial Evidence

Existing form reference: ff70df5e380dbd80

Field	Unit	Required
Name	Confirm if needed	No
Digitization from	Confirm if needed	No
Manhole Shape	Confirm if needed	No
Manhole Type	Confirm if needed	No
Depth_M	Confirm if needed	No
Internal_S	Confirm if needed	No
Units_of_S	Confirm if needed	No
Structural	Confirm if needed	No
Cover Material	Confirm if needed	No
Number of Stubs	Confirm if needed	No
Over Flow	Confirm if needed	No
Units_of_I	Confirm if needed	No
Units_of_d	Confirm if needed	No
Built on	Confirm if needed	No
Status	Confirm if needed	No
GID	Confirm if needed	No
Update Date	Confirm if needed	No
Remarks	Confirm if needed	No
Description	Confirm if needed	No

Sewer Force Main · Geospatial Evidence

Existing form reference: c5ff0d47bd7b53da

Field	Unit	Required
Line_Name	Confirm if needed	No
Digitization_from	Confirm if needed	No
Diameter	Confirm if needed	No
Diameter_Units	Confirm if needed	No
Laid_on	Confirm if needed	No
Status	Confirm if needed	No
Material	Confirm if needed	No
GID	Confirm if needed	No
Update_Date	Confirm if needed	No
Description	Confirm if needed	No
st_length(shape)	Confirm if needed	No

Sewer Gravity Main · Geospatial Evidence

Existing form reference: da848710feda4d8c

Field	Unit	Required
Line Name	Confirm if needed	No
Diameter	Confirm if needed	No
Diameter Units	Confirm if needed	No
Material	Confirm if needed	No
Slope	Confirm if needed	No
UpstreemIN	Confirm if needed	No
DownStreem	Confirm if needed	No
Laid on	Confirm if needed	No
Digitization from	Confirm if needed	No
Status	Confirm if needed	No
Units of Level	Confirm if needed	No
Gravity Type	Confirm if needed	No
GID	Confirm if needed	No
Update Date	Confirm if needed	No
st_length(shape)	Confirm if needed	No

Sewer Lateral Pipeline · Geospatial Evidence

Existing form reference: 062c4eb5c2ddc8b6

Field	Unit	Required
Pipe_Diameter_MM	Confirm if needed	No
Material	Confirm if needed	No
Buried_Depth_Meters	Confirm if needed	No
Laid_On	Confirm if needed	No
Digitization_from	Confirm if needed	No
Remarks	Confirm if needed	No
GID	Confirm if needed	No
Description	Confirm if needed	No
st_length(shape)	Confirm if needed	No

Occupied Housing Units by Grama Niladhari Division · Population & Households

Existing form reference: 8372d13713031913

Field	Unit	Required
Province Code	Confirm if needed	No
Province Name	Confirm if needed	No
District Code	Confirm if needed	No
District Name	Confirm if needed	No
DS_Division Code	Confirm if needed	No
DS_Division Name	Confirm if needed	No
GN_Division Code	Confirm if needed	No
GN_Division Name	Confirm if needed	No
GN_Division Number	Confirm if needed	No
Occupied Housing Units	Confirm if needed	No
Geography level	Confirm if needed	No
Measure basis	Confirm if needed	No
Area label	Confirm if needed	No
Source row	Confirm if needed	No

Information on Occupied Housing Units by Grama Niladhari Division, CPH-2024 · Population & Households

Existing form reference: e7e1c2657503020f

Field	Unit	Required
Province Code	Confirm if needed	No
Province Name	Confirm if needed	No
District Code	Confirm if needed	No
District Name	Confirm if needed	No
DS_Division Code	Confirm if needed	No
DS_Division Name	Confirm if needed	No
GN_Division Code	Confirm if needed	No
GN_Division Name	Confirm if needed	No
GN_Division Number	Confirm if needed	No
Occupied Housing Units	Confirm if needed	No
Type of Housing unit Structure / Single house - single storeyed	Confirm if needed	No
Type of Housing unit Structure / Single house - two storeyed	Confirm if needed	No
Type of Housing unit Structure / Single house - more than two storeyed	Confirm if needed	No
Type of Housing unit Structure / Attached house - 1st Floor	Confirm if needed	No
Type of Housing unit Structure / Attached house - 2nd Floor	Confirm if needed	No
Type of Housing unit Structure / Attached house - From 3 to 4 Floors	Confirm if needed	No
Type of Housing unit Structure / Attached house - From 5 to 10 Floors	Confirm if needed	No
Type of Housing unit Structure / Attached house - From 11to 19 Floors	Confirm if needed	No
Type of Housing unit Structure / Attached house - From 20 Floors or more	Confirm if needed	No
Type of Housing unit Structure / Other	Confirm if needed	No
Principal material of construction of the Walls / Bricks	Confirm if needed	No
Principal material of construction of the Walls / Cement block	Confirm if needed	No
Principal material of construction of the Walls / Granite/ Cube stones	Confirm if needed	No
Principal material of construction of the Walls / Cabook	Confirm if needed	No
Principal material of construction of the Walls / Pressed soil bricks	Confirm if needed	No
Principal material of construction of the Walls / Warichchi / Mud	Confirm if needed	No
Principal material of construction of the Walls / Cadjan/ Palmyrah	Confirm if needed	No
Principal material of construction of the Walls / Planks/ Metal Sheets/ Asbestos	Confirm if needed	No
Principal material of construction of the Walls / Zink Aluminium Sheets	Confirm if needed	No
Principal material of construction of the Walls / Other (specify)	Confirm if needed	No
Principal material of construction of the Walls / Not relavent	Confirm if needed	No
Principal material of construction of the Floor / Cement	Confirm if needed	No
Principal material of construction of the Floor / Terrazzo/Tile/Granite/Wood (Finished)	Confirm if needed	No
Principal material of construction of the Floor / Concrete	Confirm if needed	No
Principal material of construction of the Floor / Mud	Confirm if needed	No
Principal material of construction of the Floor / Wood	Confirm if needed	No
Principal material of construction of the Floor / Sand	Confirm if needed	No
Principal material of construction of the Floor / Other (specify)	Confirm if needed	No
Principal material of construction of the Floor / Not relavent	Confirm if needed	No
Principal material of construction of the Roof / Tile	Confirm if needed	No
Principal material of construction of the Roof / Asbestos	Confirm if needed	No
Principal material of construction of the Roof / Concrete	Confirm if needed	No
Principal material of construction of the Roof / Zink Aluminium Sheet	Confirm if needed	No
Principal material of construction of the Roof / Metal Sheet	Confirm if needed	No
Principal material of construction of the Roof / Cadjan/ Palmyrah/ Straw	Confirm if needed	No
Principal material of construction of the Roof / Other (specify)	Confirm if needed	No
Principal material of construction of the Roof / Not relavent	Confirm if needed	No
Geography level	Confirm if needed	No
Measure basis	Confirm if needed	No
Area label	Confirm if needed	No
Source row	Confirm if needed	No

Household Information by Grama Niladhari Division, CPH-2024 · Population & Households

Existing form reference: da744a0cfc8f5c9f

Field	Unit	Required
Province Code	Confirm if needed	No
Province Name	Confirm if needed	No
District Code	Confirm if needed	No
District Name	Confirm if needed	No
DS_Division Code	Confirm if needed	No
DS_Division Name	Confirm if needed	No
GN_Division Code	Confirm if needed	No
GN_Division Name	Confirm if needed	No
GN_Division Number	Confirm if needed	No
Number of Households	Confirm if needed	No
Main Source/way of drinking water / Ground Water / Protected well	Confirm if needed	No
Main Source/way of drinking water / Ground Water / Semi protected well	Confirm if needed	No
Main Source/way of drinking water / Ground Water / Unprotected well	Confirm if needed	No
Main Source/way of drinking water / Ground Water / Tube well	Confirm if needed	No
Main Source/way of drinking water / Ground Water / Spring/ Fountain	Confirm if needed	No
Main Source/way of drinking water / Pipe Borne water / Pipe borne water - National water supply & drainage board	Confirm if needed	No
Main Source/way of drinking water / Pipe Borne water / Pipe borne water - Local Authority	Confirm if needed	No
Main Source/way of drinking water / Pipe Borne water / Pipe borne water - Community base organiziation	Confirm if needed	No
Main Source/way of drinking water / Pipe Borne water / Pipe borne water - Private water supply project	Confirm if needed	No
Main Source/way of drinking water / Other / Tank/ River/Streams	Confirm if needed	No
Main Source/way of drinking water / Other / Rain water	Confirm if needed	No
Main Source/way of drinking water / Other / Bottled water	Confirm if needed	No
Main Source/way of drinking water / Other / Filter water (R.O. Plant)	Confirm if needed	No
Main Source/way of drinking water / Other / Bowser	Confirm if needed	No
Main Source/way of drinking water / Other / Other (specify)	Confirm if needed	No
Main Source of Energy/Fuel Used for Cooking / Fire wood	Confirm if needed	No
Main Source of Energy/Fuel Used for Cooking / Kerosene	Confirm if needed	No
Main Source of Energy/Fuel Used for Cooking / Gas	Confirm if needed	No
Main Source of Energy/Fuel Used for Cooking / Electricity	Confirm if needed	No
Main Source of Energy/Fuel Used for Cooking / Saw dust/Paddy husk	Confirm if needed	No
Main Source of Energy/Fuel Used for Cooking / Bio gas	Confirm if needed	No
Main Source of Energy/Fuel Used for Cooking / Other (Specify bellow )	Confirm if needed	No
Main Source of Energy/Fuel Used for Cooking / Not relavent	Confirm if needed	No
Main source of Lighting / Electricity - from National grid/rural hydro power project	Confirm if needed	No
Main source of Lighting / Kerosene lamp	Confirm if needed	No
Main source of Lighting / Solar power (grid connected)	Confirm if needed	No
Main source of Lighting / Solar power (stand alone)	Confirm if needed	No
Main source of Lighting / Bio gas	Confirm if needed	No
Main source of Lighting / Generator	Confirm if needed	No
Main source of Lighting / Other (Specify bellow )	Confirm if needed	No
Toilet facilities / Within the unit / Within the housing unit - Exclusively for the household	Confirm if needed	No
Toilet facilities / Within the unit / Within the housing unit - Sharing with another household	Confirm if needed	No
Toilet facilities / Outside the unit / Within Premises - Exclusively for the household	Confirm if needed	No
Toilet facilities / Outside the unit / Within Premises - Sharing with another household	Confirm if needed	No
Toilet facilities / Other / No toilet but sharing with another housing unit/units	Confirm if needed	No
Toilet facilities / Other / Common/ Public toilet	Confirm if needed	No
Toilet facilities / Other / Not using a toilet (use jungle, beach and open ground)	Confirm if needed	No
Geography level	Confirm if needed	No
Measure basis	Confirm if needed	No
Area label	Confirm if needed	No
Source row	Confirm if needed	No

GN Level Population by Sector, CPH 2024 · Population & Households

Existing form reference: a96d28bdb2a7a507

Field	Unit	Required
District Code	Confirm if needed	No
District Name	Confirm if needed	No
DSD Code	Confirm if needed	No
DSD Name	persons	No
GND Code	Confirm if needed	No
GND Name	persons	No
Sector / Total	persons	No
Sector / Urban*	persons	No
Sector / Rural	persons	No
Sector / Estate Rural**	persons	No
Geography level	Confirm if needed	No
Measure basis	Confirm if needed	No
Area label	Confirm if needed	No
Source row	Confirm if needed	No

Housing units by housing unit structure at district level 2024 · Population & Households

Existing form reference: a2103035c8ce0bac

Field	Unit	Required
District	Confirm if needed	No
Number of housing units	Confirm if needed	No
Structure of housing unit / Single house - Single storeyed	Confirm if needed	No
Structure of housing unit / Single house - Two storeyed	Confirm if needed	No
Structure of housing unit / Single house - more than two storeyed	Confirm if needed	No
Structure of housing unit / Attached House - 1st Floor	Confirm if needed	No
Structure of housing unit / Attached House - 2nd Floor	Confirm if needed	No
Structure of housing unit / Attached House - 3rd or 4th Floors	Confirm if needed	No
Structure of housing unit / Attached House - 5th to 10th Floors	Confirm if needed	No
Structure of housing unit / Attached House - 11th to 19th Floors	Confirm if needed	No
Structure of housing unit / Attached House - From 20th Floors or more	Confirm if needed	No
Structure of housing unit / Other	Confirm if needed	No
Geography level	Confirm if needed	No
Measure basis	Confirm if needed	No
Area label	Confirm if needed	No
Source row	Confirm if needed	No

Housing units by main material used for walls construction at district level, 2024 · Population & Households

Existing form reference: 41eb1069e9c9c17d

Field	Unit	Required
District	Confirm if needed	No
Number of housing units	Confirm if needed	No
Main material of construction of the roof / Brick	Confirm if needed	No
Main material of construction of the roof / Cement block	Confirm if needed	No
Main material of construction of the roof / Granite/Cube stones	Confirm if needed	No
Main material of construction of the roof / Cabook	Confirm if needed	No
Main material of construction of the roof / Pressed soil bricks	Confirm if needed	No
Main material of construction of the roof / Mud/Warichchi	Confirm if needed	No
Main material of construction of the roof / Kadjan/ Palmyrah	Confirm if needed	No
Main material of construction of the roof / Plank/ Metal Sheet/Asbestos	Confirm if needed	No
Main material of construction of the roof / Zink Aluminium Sheets	Confirm if needed	No
Main material of construction of the roof / Other	Confirm if needed	No
Main material of construction of the roof / Not Relavent	Confirm if needed	No
Geography level	Confirm if needed	No
Measure basis	Confirm if needed	No
Area label	Confirm if needed	No
Source row	Confirm if needed	No

Housing units by main material used for roof construction at district level, 2024 · Population & Households

Existing form reference: 74f863b697ebe277

Field	Unit	Required
District	Confirm if needed	No
Number of housing units	Confirm if needed	No
Main material of construction of the roof / Tile	Confirm if needed	No
Main material of construction of the roof / Asbestos	Confirm if needed	No
Main material of construction of the roof / Concrete	Confirm if needed	No
Main material of construction of the roof / Zink Aluminium Sheet	Confirm if needed	No
Main material of construction of the roof / Metal Sheet	Confirm if needed	No
Main material of construction of the roof / cadjan/ Palmyrah/Straw	Confirm if needed	No
Main material of construction of the roof / Other	Confirm if needed	No
Main material of construction of the roof / Not Relavent	Confirm if needed	No
Geography level	Confirm if needed	No
Measure basis	Confirm if needed	No
Area label	Confirm if needed	No
Source row	Confirm if needed	No

Housing units by main material used for floor construction at district level, 2024 · Population & Households

Existing form reference: 78b642444e82761a

Field	Unit	Required
District	Confirm if needed	No
Number of housing units	Confirm if needed	No
நிலம் அமைப்பதற்குப் பயன்படுத்தப்பட்டுள்ள பிரதான பொருட்கள் Main material of construction of the floor / Cement	Confirm if needed	No
நிலம் அமைப்பதற்குப் பயன்படுத்தப்பட்டுள்ள பிரதான பொருட்கள் Main material of construction of the floor / Terrazzo/Tile/Granite/Wood(finished)/Titanium	Confirm if needed	No
நிலம் அமைப்பதற்குப் பயன்படுத்தப்பட்டுள்ள பிரதான பொருட்கள் Main material of construction of the floor / Concrete	Confirm if needed	No
நிலம் அமைப்பதற்குப் பயன்படுத்தப்பட்டுள்ள பிரதான பொருட்கள் Main material of construction of the floor / Mud	Confirm if needed	No
நிலம் அமைப்பதற்குப் பயன்படுத்தப்பட்டுள்ள பிரதான பொருட்கள் Main material of construction of the floor / Wood	Confirm if needed	No
நிலம் அமைப்பதற்குப் பயன்படுத்தப்பட்டுள்ள பிரதான பொருட்கள் Main material of construction of the floor / Sand	Confirm if needed	No
நிலம் அமைப்பதற்குப் பயன்படுத்தப்பட்டுள்ள பிரதான பொருட்கள் Main material of construction of the floor / Other	Confirm if needed	No
நிலம் அமைப்பதற்குப் பயன்படுத்தப்பட்டுள்ள பிரதான பொருட்கள் Main material of construction of the floor / Not Relavent	Confirm if needed	No
Geography level	Confirm if needed	No
Measure basis	Confirm if needed	No
Area label	Confirm if needed	No
Source row	Confirm if needed	No

Households by main source of drinking water at district level, 2024 · Population & Households

Existing form reference: ef0674489fe2bdc3

Field	Unit	Required
District	Confirm if needed	No
Number of households	Confirm if needed	No
Main source of drinking water / Ground Water / Protected well	Confirm if needed	No
Main source of drinking water / Ground Water / Semi Protected well	Confirm if needed	No
Main source of drinking water / Ground Water / Unprotected well	Confirm if needed	No
Main source of drinking water / Ground Water / Tube Well	Confirm if needed	No
Main source of drinking water / Ground Water / Spring/Fountain	Confirm if needed	No
Main source of drinking water / Pipe Borne water / National Water Supply &drainage board	Confirm if needed	No
Main source of drinking water / Pipe Borne water / Local Authority	Confirm if needed	No
Main source of drinking water / Pipe Borne water / Community base Organiziation	Confirm if needed	No
Main source of drinking water / Pipe Borne water / Private Water Supply Project	Confirm if needed	No
Main source of drinking water / Other / Tank/River/Streams	Confirm if needed	No
Main source of drinking water / Other / Rain Water	Confirm if needed	No
Main source of drinking water / Other / Bottled water	Confirm if needed	No
Main source of drinking water / Other / மீள் வடிகட்டல் ஆலை (R.O. Plant) Filter water(R.O.plant)	Confirm if needed	No
Main source of drinking water / Other / Bowser	Confirm if needed	No
Main source of drinking water / Other	Confirm if needed	No
Geography level	Confirm if needed	No
Measure basis	Confirm if needed	No
Area label	Confirm if needed	No
Source row	Confirm if needed	No

Households by Main Source of EnergyFuel Used for Cooking at District, 2024 · Population & Households

Existing form reference: 018e27b1cfd72a36

Field	Unit	Required
District	Confirm if needed	No
Number of households	Confirm if needed	No
Main Source of Energy/Fuel Used for Cooking / Fire wood	Confirm if needed	No
Main Source of Energy/Fuel Used for Cooking / Kerosene	Confirm if needed	No
Main Source of Energy/Fuel Used for Cooking / Gas	Confirm if needed	No
Main Source of Energy/Fuel Used for Cooking / Electricity	Confirm if needed	No
Main Source of Energy/Fuel Used for Cooking / Saw dust/Paddy husk	Confirm if needed	No
Main Source of Energy/Fuel Used for Cooking / Bio gas	Confirm if needed	No
Main Source of Energy/Fuel Used for Cooking / Other	Confirm if needed	No
Main Source of Energy/Fuel Used for Cooking / Not relavent	Confirm if needed	No
Geography level	Confirm if needed	No
Measure basis	Confirm if needed	No
Area label	Confirm if needed	No
Source row	Confirm if needed	No

Households by source of lighting at district level 2024 · Population & Households

Existing form reference: d3aec442e748e54b

Field	Unit	Required
District	Confirm if needed	No
Number of households	Confirm if needed	No
Main type of lighting / Electricity - from National Grid / from rural electrification project	Confirm if needed	No
Main type of lighting / Kerosene lamp	Confirm if needed	No
Main type of lighting / Solar power (grid connected)	Confirm if needed	No
Main type of lighting / Solar power (stand alone)	Confirm if needed	No
Main type of lighting / Bio gas	Confirm if needed	No
Main type of lighting / Generator	Confirm if needed	No
Main type of lighting / Other	Confirm if needed	No
Geography level	Confirm if needed	No
Measure basis	Confirm if needed	No
Area label	Confirm if needed	No
Source row	Confirm if needed	No

Households using toilet facilities at district level 2024 · Population & Households

Existing form reference: 1776b9ac25ff6b34

Field	Unit	Required
District	Confirm if needed	No
Number of households	Confirm if needed	No
Toilet facilities / Within the unit / Exclusively for the household	Confirm if needed	No
Toilet facilities / Within the unit / Sharing with another household	Confirm if needed	No
Toilet facilities / Outside the unit / Exclusively for the household	Confirm if needed	No
Toilet facilities / Outside the unit / Sharing with another household	Confirm if needed	No
Toilet facilities / Other / No toilet but sharing with another housing unit/ units	Confirm if needed	No
Toilet facilities / Other / Common/ public toilet	Confirm if needed	No
Toilet facilities / Other / Not using a toilet	Confirm if needed	No
Geography level	Confirm if needed	No
Measure basis	Confirm if needed	No
Area label	Confirm if needed	No
Source row	Confirm if needed	No

Housing units by housing unit structure at district level and Divisional Secretariat Divisions , 2024 · Population & Households

Existing form reference: 512d4139dfc4438e

Field	Unit	Required
District and Divisional Secretary Division	Confirm if needed	No
Number of housing units	Confirm if needed	No
Type of housing unit / Single house - Single storeyed	Confirm if needed	No
Type of housing unit / Single house - two storeyed	Confirm if needed	No
Type of housing unit / Single house - more than two storeyed	Confirm if needed	No
Type of housing unit / Attached House - 1st Floor	Confirm if needed	No
Type of housing unit / Attached House - 2nd Floor	Confirm if needed	No
Type of housing unit / Attached House - 3rd or 4th Floors	Confirm if needed	No
Type of housing unit / Attached House - 5th to 10th Floors	Confirm if needed	No
Type of housing unit / Attached House - 11th to 19th Floors	Confirm if needed	No
Type of housing unit / Attached House - From 20th Floors or more	Confirm if needed	No
Type of housing unit / Other	Confirm if needed	No
Geography level	Confirm if needed	No
Measure basis	Confirm if needed	No
Area label	Confirm if needed	No
Source row	Confirm if needed	No

Housing units by main material used for walls construction at district level and Divisional Secretariat Divisions , 2024 · Population & Households

Existing form reference: 083d1e12fbf4e056

Field	Unit	Required
District and Divisional Secretary Division	Confirm if needed	No
Number of housing units	Confirm if needed	No
Main material of construction of the wall / Brick	Confirm if needed	No
Main material of construction of the wall / Cement block	Confirm if needed	No
Main material of construction of the wall / Granite/Cube stones	Confirm if needed	No
Main material of construction of the wall / Cabook	Confirm if needed	No
Main material of construction of the wall / Pressed soil bricks	Confirm if needed	No
Main material of construction of the wall / Mud/Warichchi	Confirm if needed	No
Main material of construction of the wall / Kadjan/ Palmyrah	Confirm if needed	No
Main material of construction of the wall / Plank/ Metal Sheet/Asbestos	Confirm if needed	No
Main material of construction of the wall / Zink Aluminium Sheets	Confirm if needed	No
Main material of construction of the wall / Other	Confirm if needed	No
Main material of construction of the wall / Not Relavent	Confirm if needed	No
Geography level	Confirm if needed	No
Measure basis	Confirm if needed	No
Area label	Confirm if needed	No
Source row	Confirm if needed	No

Housing units by main material used for roof construction at district level and Divisional Secretariat Divisions , 2024 · Population & Households

Existing form reference: e1b26edc2e6a0e5e

Field	Unit	Required
District and Divisional Secretary Division	Confirm if needed	No
Number of housing units	Confirm if needed	No
Main material of construction of the roof / Tile	Confirm if needed	No
Main material of construction of the roof / Asbestos	Confirm if needed	No
Main material of construction of the roof / Concrete	Confirm if needed	No
Main material of construction of the roof / Zink Aluminium Sheet	Confirm if needed	No
Main material of construction of the roof / Metal Sheet	Confirm if needed	No
Main material of construction of the roof / cadjan/ Palmyrah/Straw	Confirm if needed	No
Main material of construction of the roof / Other	Confirm if needed	No
Main material of construction of the roof / Not Relavent	Confirm if needed	No
Geography level	Confirm if needed	No
Measure basis	Confirm if needed	No
Area label	Confirm if needed	No
Source row	Confirm if needed	No

Housing units by main material used for floor construction at district level and Divisional Secretariat Divisions, 2024 · Population & Households

Existing form reference: 9a5782101a90d9fe

Field	Unit	Required
District	Confirm if needed	No
Number of housing units	Confirm if needed	No
Main material of construction of the floor / Cement	Confirm if needed	No
Main material of construction of the floor / Terrazzo/Tile/Granite/Wood(finished)/Titanium	Confirm if needed	No
Main material of construction of the floor / Concrete	Confirm if needed	No
Main material of construction of the floor / Mud	Confirm if needed	No
Main material of construction of the floor / Wood	Confirm if needed	No
Main material of construction of the floor / Sand	Confirm if needed	No
Main material of construction of the floor / Other	Confirm if needed	No
Main material of construction of the floor / Not Relavent	Confirm if needed	No
Geography level	Confirm if needed	No
Measure basis	Confirm if needed	No
Area label	Confirm if needed	No
Source row	Confirm if needed	No

Households by Main Source of EnergyFuel Used for Cooking at district level and Divisional Secretariat Divisions, 2024 · Population & Households

Existing form reference: dafbcc0869c20819

Field	Unit	Required
District and Divisional Secretary Division	Confirm if needed	No
Number of households	Confirm if needed	No
Main Source of Energy/Fuel Used for Cooking / Fire wood	Confirm if needed	No
Main Source of Energy/Fuel Used for Cooking / Kerosene	Confirm if needed	No
Main Source of Energy/Fuel Used for Cooking / Gas	Confirm if needed	No
Main Source of Energy/Fuel Used for Cooking / Electricity	Confirm if needed	No
Main Source of Energy/Fuel Used for Cooking / Saw dust/Paddy husk	Confirm if needed	No
Main Source of Energy/Fuel Used for Cooking / Bio gas	Confirm if needed	No
Main Source of Energy/Fuel Used for Cooking / Other	Confirm if needed	No
Main Source of Energy/Fuel Used for Cooking / Not relavent	Confirm if needed	No
Geography level	Confirm if needed	No
Measure basis	Confirm if needed	No
Area label	Confirm if needed	No
Source row	Confirm if needed	No

Households by main source of drinking water at district level and Divisional Secretariat Divisions, 2024 · Population & Households

Existing form reference: ce89abd871f197b0

Field	Unit	Required
District and Divisional Secretary Division	Confirm if needed	No
Number of households	Confirm if needed	No
Main source of drinking water / Ground Water / Protected well	Confirm if needed	No
Main source of drinking water / Ground Water / Semi Protected well	Confirm if needed	No
Main source of drinking water / Ground Water / Unprotected well	Confirm if needed	No
Main source of drinking water / Ground Water / Tube Well	Confirm if needed	No
Main source of drinking water / Ground Water / Spring/Fountain	Confirm if needed	No
Main source of drinking water / Pipe Borne water / National Water Supply &drainage board	Confirm if needed	No
Main source of drinking water / Pipe Borne water / Local Authority	Confirm if needed	No
Main source of drinking water / Pipe Borne water / Community base Organiziation	Confirm if needed	No
Main source of drinking water / Pipe Borne water / Private Water Supply Project	Confirm if needed	No
Main source of drinking water / Other / Tank/River/Streams	Confirm if needed	No
Main source of drinking water / Other / Rain Water	Confirm if needed	No
Main source of drinking water / Other / Bottled water	Confirm if needed	No
Main source of drinking water / Other / மீள் வடிகட்டல் ஆலை (R.O. Plant) Filter water(R.O.plant)	Confirm if needed	No
Main source of drinking water / Other / Bowser	Confirm if needed	No
Main source of drinking water / Other	Confirm if needed	No
Geography level	Confirm if needed	No
Measure basis	Confirm if needed	No
Area label	Confirm if needed	No
Source row	Confirm if needed	No

Households by source of lighting at district level and Divisional Secretariat Divisions , 2024 · Population & Households

Existing form reference: bc8a342569a5c0ac

Field	Unit	Required
District and Divisional Secretary Division	Confirm if needed	No
Number of households	Confirm if needed	No
Main type of lighting / Electricity - from National Grid / from rural electrification project	Confirm if needed	No
Main type of lighting / Kerosene lamp	Confirm if needed	No
Main type of lighting / Solar power (grid connected)	Confirm if needed	No
Main type of lighting / Solar power (stand alone)	Confirm if needed	No
Main type of lighting / Bio gas	Confirm if needed	No
Main type of lighting / Rural water supply project	Confirm if needed	No
Main type of lighting / Other	Confirm if needed	No
Geography level	Confirm if needed	No
Measure basis	Confirm if needed	No
Area label	Confirm if needed	No
Source row	Confirm if needed	No

Households using toilet facilities at district level and divisional Secretariat Divisions, 2024 · Population & Households

Existing form reference: 2dbde244619e1052

Field	Unit	Required
District and Divisional Secretary Division	Confirm if needed	No
Number of households	Confirm if needed	No
Toilet facilities / Within the unit / Exclusively for the household	Confirm if needed	No
Toilet facilities / Within the unit / Sharing with another household	Confirm if needed	No
Toilet facilities / Outside the unit / Exclusively for the household	Confirm if needed	No
Toilet facilities / Outside the unit / Sharing with another household	Confirm if needed	No
Toilet facilities / Other / No toilet but sharing with another housing unit/ units	Confirm if needed	No
Toilet facilities / Other / Common/ public toilet	Confirm if needed	No
Toilet facilities / Other / Not using a toilet	Confirm if needed	No
Geography level	Confirm if needed	No
Measure basis	Confirm if needed	No
Area label	Confirm if needed	No
Source row	Confirm if needed	No

5. Documents and images

Your institution has its own document and image library. Use the same library for reports, photos and other evidence.

Open this screen for National Water Supply and Drainage Board See the presentation example

National Water Supply and Drainage Board Documents and images prototype screen — National Water Supply and Drainage Board. Prototype screen. Select the image to enlarge it.

What you can try

Open Documents and images. Check the institution name.
Use All files, Documents or Images to find a file. Open its preview or download the original.
Use a sample file to try Add file. Private is the starting choice. Public needs a source, permission to share and review.
Use Access preview to try the institution reviewer and Public visitor views.

Files added in the prototype stay in this browser. Public sharing is an access preview. Existing public reference links already work online.

What your institution needs to confirm

Does a separate library for your institution meet your needs?Should new files start as Private for the permitted institution team?Should Public access require a review of the file and sharing permission?What documents and images will you store? Give the file types, usual sizes and need for earlier versions.Which job roles may add files, read Private files and approve Public files?Which files must stay Private? What permission, licence or expiry rule is needed for Public files?What else should change in this library?

6. Data structure management

Data structure keeps the existing source tree, records, charts and map. Manage structure adds a place to propose changes to definitions.

Open this screen for National Water Supply and Drainage Board See the presentation example

National Water Supply and Drainage Board Data structure management prototype screen — National Water Supply and Drainage Board. Prototype screen. Select the image to enlarge it.

What you can try

Open Data structure and choose Manage structure.
Use Add base domain for a main information area. Add inside creates a subject area, a nested subject, an entity type or a field under the right parent.
Give the definition a clear name, code and meaning. Reuse an existing definition when the meaning is the same.
For a field, check the data type, unit, required value, limits and missing-value rule. Save a Draft, then try the separate reviewer view.

An entity type means a kind of thing or event, such as a reservoir or an inspection. Drafts stay in this browser. A demo approval does not change real definitions, data, chart links or sharing rights.

What your institution needs to confirm

Do the existing main topics and subject areas match your institution’s work?Should definition changes stay Draft until the responsible reviewer checks them?Is it right to reuse the same entity type or field when its meaning is the same?Which main topics, subject areas, entity types or fields should we add or change?Which units, choices, limits, decimal places and missing-value rules must each new field use?Which job roles may edit definitions and review them? Who owns each main information area?When a meaning, unit or calculation changes, what review and version history does your institution need?

7. Users and access

User management shows example profiles for each institution. People and Roles and access let you review the proposed account screens.

Open this screen for National Water Supply and Drainage Board See the presentation example

National Water Supply and Drainage Board Users and access prototype screen — National Water Supply and Drainage Board. Prototype screen. Select the image to enlarge it.

What you can try

Open User management and choose the institution. The rows are examples, not a list of your staff.
Use View access to check a role. An administrator title alone does not give access to Private files.
Try Preview invitation or Preview access change. Check the role, start date, optional end date and reason.
Review the example permissions and tell us which job roles should receive each one.

These are interface previews only. They create no account, send no email and change no access. Use example details in the preview. Institution verification does not grant a real permission.

What your institution needs to confirm

Do the proposed role names and responsibilities match your institution?Should access be limited to the assigned institution and the agreed dates?Should reading Private files need a separate permission, even for an administrator?Which job roles should view data, add files, review Public requests, edit definitions and manage users?Who should approve new access, set an end date or remove access when someone changes duties?Which user fields, roles or access checks are missing? Give role names rather than passwords or private account details.

9. Anything else we should change?

Which decisions or services are missing?Which forms or fields should change? Give the existing form reference where possible.What should change in the entry, checking, expert, map or report steps?Are the English, Sinhala and Tamil words clear? Give the screen name, current word and your suggested wording.Who should join the next review and what should happen next?

Use the Download answers button at the top of this page. Share the downloaded file or printed copy through your agreed review channel. Nothing is sent automatically.

National Water Supply and Drainage Board

1. Check a decision

2. Try the inputs

3. Check each decision

Fictional worked example · 2025

Fictional worked example · 2025

Fictional worked example · 2025

Fictional worked example · 2025

Fictional worked example · 2025

Fictional worked example · 2025

Fictional worked example · 2025

Fictional worked example · 2025

Fictional worked example · 2025

Fictional worked example · 2025

Fictional worked example · 2025

Fictional worked example · 2025

Fictional worked example · 2025

Fictional worked example · 2025

Fictional worked example · 2025

Fictional worked example · 2025

Fictional worked example · 2025

Fictional worked example · 2025

Fictional worked example · 2025

Fictional worked example · 2025

4. Existing data forms for your institution

5. Documents and images

What you can try

What your institution needs to confirm

6. Data structure management

What you can try

What your institution needs to confirm

7. Users and access

What you can try

What your institution needs to confirm

8. Can you share data regularly?

9. Anything else we should change?