Hong Kong to Replace All Cast Iron and Asbestos Water Pipes Within a Decade

During the latest Policy Address, Chief Executive John Lee outlined a comprehensive overhaul of Hong Kong's water supply system, pledging to phase out all cast iron and asbestos cement pipes over the next ten years. The government will replace or rehabilitate roughly 350 kilometres of old mains, initially tackling about 70 kilometres annually and accelerating to double that amount in the 2026-27 fiscal year. Priority zones include Shau Kei Wan, Wong Tai Sin and Kwai Tsing, areas with dense public housing and a high proportion of senior citizens.

The initiative targets a 20-30 % reduction in pipe bursts and serious leaks within the first half-decade. To enhance detection, the administration will partner with universities and private firms to launch an Intelligent Water Network Closed-loop Management Chain featuring AI-based prediction and leak detection, with full network rollout planned within five years of the system’s debut. An expert group of local and overseas water-works specialists will also be formed to advise on long-term management strategies.