Table 3

Partial indicators for the dependable water supply outcome

Outcome dimensionPotential outcome-oriented indicators
Outcome 4 – dependable water supplyResilientSpeed of leak repair
Population supplied by single system
Sites made resilient to rainfall or flood events
Resilience schemes undertaken
Ability to move water around network
ReliableUnplanned minutes lost
Water supply interruptions
Asset reliability
Volume of leakage
Number of mains bursts
Customer contacts over water availability
Long-term stability and reliability factor
SufficientWater available for use (Environment Agency definition) per capita – dry year: l/d
Water available for use (Environment Agency definition) per capita – critical period: l/d
Properties experiencing low pressure
Water resource efficiency
SecureSecurity of supply index – dry year
Security of supply index – critical period
Frequency of water use restrictions
Compliance with security and emergency measure directive
Delivery of climate change strategy

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