In order to reduce its dependence on external sources of water, Singapore has developed and implemented extremely efficient demand and supply water management practices since mid 1970s.
Source: World Resources Institute (2011) A Compilation of Green Economy Policies, Programs, and Initiatives from Around the World. The Green Economy in Practice: Interactive Workshop 1, February 11th, 2011

Historically, Singapore has been dependent on external sources of water because it has a limited amount of land area to store rainfall. In order to reduce its dependence on external sources of water, Singapore has developed and implemented extremely efficient demand and supply water management practices. Singapore's approaches involve integrating a water demand management program that emphasizes the proper handling of the transmission and distribution network, with water conservation measures. This strategy is a combination of rainfall storage, desalination and very sophisticated technology for recycling used water.

It improved water security, water quality while it decreased reliance on foreign water supplies. It also increased in recreational water activities.