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Singapore has two separate systems to collect rainwater and used water. Rainwater is collected through a comprehensive network of drains, canals, rivers, storm-water collection ponds and reservoirs before it is treated for drinking water supply. This makes Singapore one of the few countries in the world to harvest urban storm-water on a large-scale for its water supply.

Currently, Singapore has 32 rivers and about 8,000km of drains, riversĀ and canals.

Last updated on 23 Jan 2013