01 SEAWATER INTAKE Desalination is an important source of water supply for . With Tuas Desalination Seawater is drawn into the plant through a Plant, we can meet up to 30% of Singapore's huge underwater pipe. water needs.

02 SCREENING Tuas Desalination Plant is the first in Singapore to Seawater undergoes a two-stage mechanical use advanced pre-treatment technology, a filtration to remove coarse and fine particles. combination of dissolved air flotation and Tuas ultrafiltration. 03 DISSOLVED AIR FLOTATION Chemicals are added to agglomerate impurities It is the first desalination plant to be owned and Desalination into bigger particles, and fine air bubbles are operated by PUB. pumped in to float these particles to the surface Plant for easy removal as part of the clarification process. It is the first desalination plant in Singapore fitted with solar panels, with more than half of the total 04 ULTRAFILTRATION roof area covered by solar panels. The clarified seawater passes through semi-permeable membranes to remove impurities, microorganisms and bacteria of smaller sizes.

05 REVERSE OSMOSIS The pre-treated seawater is pumped at high-pressure through these semi-permeable membranes to separate dissolved solids. The same technology is used in the NEWater process.

06 POST TREATMENT The treated water is made potable by 06 adding chemicals such as chlorine and fluoride, 05 similar to post treatment processes at Waterworks. 02 03 04

01 Securing water for Singapore’s future water needs The threats of climate change Singapore’s future water The Tuas Desalination Plant will bring new challenges to our security lies with desalination boost desalination capacity from SINGAPORE’S water supply. While dealing and reuse. These rainfall- the current 100mgd to 130mgd, with climate change, there is independent sources of water meeting up to 30% of Singapore’s also a need to cater for rising will also help to reduce our current water demand. By 2060, Desalination Journey water demand, projected to vulnerability to weather desalination is expected to meet double by 2060. uncertainties. up to 30% of Singapore’s future water needs.

To be ready To be ready in 2020 in 2020

2005 2013 2018 2020 2020 SingSpring Tuaspring Tuas Island Desalination Desalination Desalination Desalination Desalination Plant Plant Plant Plant Plant 30mgd 70mgd 30mgd