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Phase 2


The Deep Tunnel Sewerage System (DTSS) is a superhighway for Singapore’s used water management. DTSS uses deep tunnels to convey used water entirely by gravity to three centralised treatment plants strategically located at coastal areas. The treated used water is then reclaimed and further purified into NEWater, with excess effluent discharged to the sea in an environmentally responsible manner.

When the entire DTSS is completed, existing intermediate pumping stations and conventional Water Reclamation Plants(WRPs) will be phased out, freeing up land.

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Watch video "DTSS: Singapore's Used Water Superhighway" >>​​

Start of DTSS Construction Works

On 20 November 2017, PUB held a groundbreaking ceremony for the enhanced conveyance system of the Deep Tunnel Sewerage System (DTSS) Phase 2 to mark the start of its construction works. Held at one of the tunnelling shafts at Penjuru Road, this ceremony was officiated by the Guest of Honour, Mr Masagos Zulkifli, Minister for the Environment and Water Resources.

For more information refer to the latest DTSS press release.