Water Loss Rate in 2025 in National Water Distribution System

86 Ms Valerie Lee asked the Minister for Sustainability and the Environment (a) what is Singapore's 2025 water loss rate in the national water distribution system; (b) how many reported cases are sited near land transport related construction sites; and (c) what new measures are being implemented since 2023 to further reduce water loss and improve the efficiency and resilience of the water supply network.

Ms Grace Fu Hai Yien: Singapore's water loss rate for our potable water network is reported in the Public Utilities Board's (PUB's) Annual and Sustainability Report. In 2025, Singapore achieved a water loss rate of 7.2%, which is among the lowest in the world. In the same year, there were six cases of damaged pipes arising from activities at land transport-related construction sites.

To reduce the risk of damages to water pipes, since 2023, PUB has required contractors to GPS tag certain machinery to monitor high-risk works that take place near PUB's critical pipelines.