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5.1
Standard ActivityE36.00

Construction, Extension and Operation of Water Collection, Treatment and Supply Systems

Construction and operation of water infrastructure for collection, treatment and supply that improves energy efficiency and reduces water losses.

Substantial Contribution to Climate Change Mitigation

The water supply system must be designed and operated to achieve a net energy consumption of the system at or below 0.5 kWh per cubic metre of supplied water, or demonstrate at least a 20% improvement in energy efficiency compared to the system's own baseline performance over the previous three years.

Non-revenue water (leakage) in the distribution network must be below 1.5 m3/km/day at the system level, measured according to the IWA water balance methodology. Where the system is newly constructed, design specifications must include smart metering, pressure management, and leak detection infrastructure from the outset.

Substantial Contribution to Climate Change Adaptation

The infrastructure must undergo a CRVA under Appendix A, addressing flood risk, drought, changes in raw water availability, and extreme temperature effects on treatment processes. Redundancy and resilience measures must be built into the system design.

DNSH: Climate Change Adaptation

Physical climate risks must be assessed per Appendix A, and the infrastructure must be designed to withstand projected hazards including extreme rainfall events and drought periods over its expected operational lifetime.

DNSH: Water and Marine Resources

The system must comply with the Drinking Water Directive (EU) 2020/2184 and must not cause deterioration of source water bodies under the Water Framework Directive. Abstraction levels must remain within permits and must not compromise minimum ecological flows.

DNSH: Circular Economy

Construction materials must be sourced responsibly, and at least 70% of non-hazardous construction waste must be prepared for re-use or recycling. The system must be designed for long operational lifetime and ease of maintenance.

DNSH: Pollution Prevention and Control

Treatment processes must not discharge pollutants above permitted limits. Chemical storage and handling must comply with REACH and CLP regulations. Sludge from water treatment must be disposed of or recovered in compliance with the Waste Framework Directive.