Singapore's Four National Taps refer to the 4 sources of water supply, i.e. (1) Local Catchment, (2) Imported Water (from Johor), (3) NEWater and (4) Desalinated Water.

The first 'tap' refers to the supply from our local water catchments and reservoirs. The second 'tap' refers to the import of water from Malaysia under two water agreements. Our third 'tap' NEWater, leverages on a 3-stage process of ultra-filtration/ micro filtration, reverse osmosis and ultra violet radiation to reclaim water from our used water effluent. Our fourth 'tap' is seawater desalination through which freshwater is obtained by desalting seawater through the reverse osmosis process. The Four National Taps help to diversify our sources of water to ensure a reliable and resilient water supply.

Under the Control of Vectors and Pesticides Act, all persons who carry out vector control work for gain or under employment must be registered, licensed or certified, as follows:

(1) all vector control operators (companies) must be registered;
(2) all vector control technicians (supervisors) must be licensed; and
(3) all vector control workers must be certified.

The latest assessment report released by the Inter-Governmental Panel on Climate Change projected global temperature increase and sea level rise, as well as increased occurences of extreme weather such as heatwaves, droughts and floods. However the resolutions for these projections are too coarse for Singapore. Hence, the National Environment Agency has commissioned a two-year study starting in March 07 to better understand the possible long-term effects and impacts of climate change on Singapore such as changes in rainfall patterns, sea levels and extreme weather conditions.

Yes, Singapore ratified the UNFCCC in 1997 and acceded to the KP in 2006 respectively.

Currently, about half of Singapore's total land area is used as water catchments. This will increase to two-thirds of the island when the new Marina Reservoir and the first phase of the Seletar-Serangoon Reservoir Schemes are completed.