PUB ( Public Uilities Board ) is a national water agency, which is responsible for the collection, production, distribution and reclamation of water in Singapore.

1. Collection

Rainwater is collected through rivers, streams, canals and drains, and stored in 14 reservoirs. Various reservoirs are linked by pipelines so that excess water can be pumped from one reservoir to another, thus optimising storage capacity.

2. Production

Raw water is then piped to the waterworks for treatment.

3. Distribution

After treatment, the water is stored in convered reservoirs before bring distributed to customers.

4. Reclamation

Water that has been used by customers is collected via an extensive sewerage system and treated at water reclamation plants. Used water is a resource too -treated used water is further purified using advanced technology to produce high-grade reclaimed water, known as NEWater. With an eye on the future, PUB has bulit the Deep Tunnel Sewerage System (DTSS) for long-term sustainability. An integral part of the water loop, the DTSS is a superhighway that will channel used water to a centralised water reclamation plant for treatment. The treated used water will then be discharged into the sea or further purified into NEWater.