Submitted by: PUB
Implemented country: Singapore
Title: Tunnelling for the Future - Singapore’s Deep Tunnel Sewerage System
Singapore has a sewerage system that comprises six water reclamation plants (WRP) and 130 pumping stations. It provides modern sanitation for Singapore, a cleaner environment, as well as the ability to reclaim used water. Considering the demographic and economic growth the PUB, Singapore’s national water agency has begun building a deep tunnel sewerage system (DTSS) for long-term sustainability. The DTSS is an efficient solution to meet Singapore’s long-term needs for used water collection, treatment and disposal. When it is completed, it will free 1000 hectares of land currently used for the existing WRPs and pumping stations. Besides, the intended centralisation of water treatment at one WRP will be more cost effective.