The
1st national tap is the local catchment areas which help Singapore
increase the water supply. It is expanding local catchment area, local catchment
area is the collection of rainwater through a network of drains, canal, rivers and
storm water collection pond before being channeled to Singapore’s reservoir.
The total Singapore catchment area has occupied up to 2/3 of Singapore’s land
surface.
The
advantage of local catchment area is cheap as it does not require much treatment,
and it is much cleaner than seawater and reuse water. It can also be used as a
recreation.
However,
its disadvantage it takes up a big piece of land, it also has little control to
drought. It is inadequate to cover Singapore’s water needs.
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