Separate Water, Sewer & Stormwater Networks
Map, separate and maintain underground utilities according to local engineering reality.
Define the service failure before selecting infrastructure.
Cross-connections and damaged pipes can contaminate drinking water.
Sewage entering storm drains reduces treatment and flood capacity.
Record state, district, city/block, village/ward or supply zone; season and date; source or asset; affected users; observed service; measurement or sample method; photo/document where safe; and uncertainty. Never imply 100-metre accuracy unless the evidence genuinely supports it.
Test the full source-to-service chain.
Incomplete or outdated as-built maps
Treat this as a hypothesis until records, field observation, seasonal evidence and credible alternatives are checked.
Utilities installed without shared corridor records
Treat this as a hypothesis until records, field observation, seasonal evidence and credible alternatives are checked.
Combined legacy systems
Treat this as a hypothesis until records, field observation, seasonal evidence and credible alternatives are checked.
Maintenance access blocked
Treat this as a hypothesis until records, field observation, seasonal evidence and credible alternatives are checked.
Components that must work together.
Drinking-water network
Define the responsible actor, operating standard, input, handoff, maintenance requirement, failure trigger and evidence record.
Sewer/wastewater network
Define the responsible actor, operating standard, input, handoff, maintenance requirement, failure trigger and evidence record.
Stormwater network
Define the responsible actor, operating standard, input, handoff, maintenance requirement, failure trigger and evidence record.
Pipeline and utility mapping
Define the responsible actor, operating standard, input, handoff, maintenance requirement, failure trigger and evidence record.
Leak, pressure and flow monitoring
Define the responsible actor, operating standard, input, handoff, maintenance requirement, failure trigger and evidence record.
Asset access and lifecycle management
Define the responsible actor, operating standard, input, handoff, maintenance requirement, failure trigger and evidence record.
Match intervention to hydrogeology, settlement and service capacity.
Create surveyed, versioned underground asset maps.
Use colour/asset identification and safe separation standards.
Detect and remove illicit connections.
Upgrade combined systems progressively with overflow and treatment plans.
Diagnose, protect, pilot, measure and institutionalise.
Verify & protect
Confirm the location, affected users, service chain, immediate health or safety risk, responsible agency and existing evidence.
Controlled pilot
Map and inspect one high-risk utility corridor, correct cross-connections and create maintainable access records.
Durable system
Fund operations, preventive maintenance, skilled teams, monitoring, public reporting, correction pathways and independent evaluation.
Measure service and outcomes—not assets alone.
Water interventions can transfer risk across people, places and time.
- RiskExcavation damagePrevention · accountable owner · trigger · remedy
- RiskMaps exposing critical assetsPrevention · accountable owner · trigger · remedy
- RiskUnfunded separation mandatesPrevention · accountable owner · trigger · remedy