The different ways Singapore dealt with their water constraints.

Singapore has put place a diversified water supply system, also known as the 4 National Taps.
These 4 taps are;
Tap 1: Water from local catchments. (Reservoirs)
- There are 14 reservoirs island wide
- Half of Singapore is used as water catchments
- Strength: There are frequent rainfalls in Singapore.
- Weakness: The amount of water collected by the local catchment areas is not enough to sustain the whole Singapore.

Tap 2: Imported Water
- Singapore have been buying water from Malaysia since 1920.
-They signed 2 agreements in 1961 and 1962.
- However, it may not be the best solution as the countries may not want to continue supplying water.
- Strength: It is cheaper than desalinated water and NEWater.
- Weakness: It is unreliable as the water agreements expire in 2011 and 2061.

Tap 3: NEWater
- NEWater is obtained after reclaiming used water.
- Treated used water is further purified, making it suitable for human consumption.
- With the addition of the fifth and largest NEWater plant at Changi, NEWater now meets 30% of Singapore's total water demand.
- It is said that by 2060, NEWater is projected to meet 50% of Singapore's future water demand.
- Strength: There would be a constant supply of NEWater as humans produce waste everyday.
- Weakness: It is not cheap and incurs high cost.

Tap 4: Desalinated Water
- There is a SingSpring Desalination Plant in Tuas
- It supplies 136000 million litres of desalinated water daily, which meets about 10% of Singapore's water needs
- An integral role in Singapore's drive towards self-sufficiency
- Meet future needs at an affordable costs
- Strength: Very reliable.
- Weakness: It is very expensive and since there is only one plant, if it malfunctions, there would be no more plants.