Water sources

The water resources of Singapore are especially precious given the small amount of land and territory in Singapore's geography while having a large urban population in thecity-state. Without natural freshwater lakes, Singapore relies on four water sources:

• rainfall, collected in reservoirs or water catchment areas (about 20% of supply in 2010),
• Imported water from Malaysia (about 40% of supply),
• Reclaimed water (producing NEWater) (30% of supply), and
• Seawater desalination (10% of supply).

This "four tap" strategy aims to reduce reliance on supply from Malaysia by increasing the volume supplied from the three other sources, or "national taps".