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Ministry of Sustainability and the Environment
Parliament Q&A

Written Reply to Parliamentary Question on Water Loss Rate in the National Water Distribution System in 2025

8 April 2026

Written Reply to Parliamentary Question on the 2025 water loss rate in Singapore's national water distribution system by Ms Grace Fu, Minister for Sustainability and the Environment.

Questions:

Ms Valerie Lee. To ask 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.

Answer:

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.

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