n Water&Sanitation Africa - Potential of marginal waters in the Orange-Senqu Basin - : water resources

Volume 4 Number 6
  • ISSN : 1990-8857


Scarcity of water in semi-arid and impoundment restricted regions of the world has necessitated the development of strategies to optimise the use of available water resources. One of the most widely adopted measures is the augmentation of the water supply through the use of unconventional or 'marginal' water sources. Marginal water has been defined as water that can be recycled, reused or reclaimed, including naturally occurring unpotable water, such as a sea water, brackish water, saline and sodic water, unpotable groundwater, rainwater and fog harvesting.

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