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Singapore Underground: Deep Tunnel Sewerage System a key part of nation's water future
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Singapore’s Deep Tunnel Sewerage System (DTSS) is a superhighway for used water. The Straits Times goes underground to look at the construction of DTSS Phase 2.
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SINGAPORE - The Deep Tunnel Sewerage System (DTSS), conceived more than two decades ago by Singapore's national water agency PUB, is a superhighway for used water that is a lifeline for a small city-state with a growing urban population.
It harvests water from residential blocks, commercial properties and industrial estates and recycles it to meet Singapore's long-term needs for used water collection, treatment, reclamation and disposal.

