Freshwater Resources

The Ministry of Environment and Water Resources directs domestic water policy.

Singapore experiences ample year-round rainfall, but is water-scarce due to insufficient land to collect and store water. This inability to collect and store water is exacerbated by a lack of groundwater reserves. Singapore has four sources of water: imported water from Malaysia under the 1961 and 1962 Water Agreements, water collected from local catchments that is harvested from storm water, high-grade purified water from five NEWater plants, and desalinated water from Asia’s largest reverse-osmosis desalination plant. Historically there has been a high reliance on water from the neighboring province of Johor in Malaysia, but this source will be insufficient as Singapore's expected water demand doubles in the long run due to projected increases in industrial activities and Singapore’s population growth. Singapore is increasing water catchment to cover 90% of its land area, but this will still not be enough to meet future demand. NEWater and desalinated water operations will be expanded to meet 80% of future water needs, despite its energy-intensive production process, to try and ensure water self-sufficiency for Singapore. Given that Singapore’s coastal reservoirs have dams that are higher than the projected sea level increase predicted by climate change and that the height of these dams can be raised if needed, Singapore’s water supply is unlikely to be affected by seawater intrusion. These plans will also help to increase water security, as NEWater and desalination are not dependent on rainfall and help to greatly diversify the water supply channels of Singapore.

Thematic Reference: 
Thematic Data Source: 
Singapore's Second National Communication under the United Nations Framework Convention on Climate Change (UNFCCC)
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