Sign In


Phase 1


Completed in 2008 at a cost of SGD$3.4 Billion, Phase 1 of the DTSS comprises a 48 km-long deep sewer tunnel running from Kranji to Changi, a centralised water reclamation plant at Changi, two 5 km-long deep sea outfall pipes and 60km of link sewers.

The heart of DTSS Phase 1, the Changi Water Reclamation Plant (Changi WRP) is a state-of-the-art used water plant capable of treating 900,000 cubic metres (202 million gallons) of used water per day to international standards. The treated used water is then discharged into the sea through deep sea outfall pipes or channelled to the Changi NEWater factory on the rooftop of the reclamation plant where it is further purified through advanced membrane technologies into NEWater, Singapore’s own brand of reclaimed water.

Click here for an inside look of the Changi WRP.

View enlarged version >>
Changi Water Reclamation Plant Treatment Process

Changi WRP was officially opened by Singapore’s Prime Minister Lee Hsien Loong on 23rd June 2009 during the Singapore International Water Week.

CWRP Opening 2009