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Cape Flats, South Africa

The Cape Flats Aquifer is the major source of municipal water for Cape Town city and for irrigation. The Cape Flats Aquifer is increasingly contaminated by salinity intrusion, diffuse pollution from agriculture and micropollutants. The current groundwater extraction rate is at 100% of natural recharge and seawater intrusion is increasing. Due to climate change and the rapid increase in and food production, The Cape Flats Aquifer is expected to reach oversaturation during the next 5 years. A preliminary Managed Aquifer Recharge project with treated wastewater is starting to be developed at the basin level, to increase the The Cape Flats Aquifer recharge rate and curb salinity intrusion. To ensure a gradual improvement of The Cape Flats Aquifer water quality, Managed Aquifer Recharge needs to be associated with preventive measures aimed at decreasing diffuse pollution from agriculture.

Demosite leader: Gideon Wolfaardt

Entity: SUWI



Climate & global change expected

Mediterranean climate; high vulnerability to climate change; conflict over water
availability; diffuse pollution from agriculture

Groundwater protection technological approach

Managed Aquifer Recharge using waste water

Societal and policy context

High societal concern about water pollution and drought.
Update of the 1997 Water Act needed



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