Cape Town Drought and Coal Power

Coal power plants consume a huge amount of water for cooling. Coal mines also have a huge impact on water resources. Even though most of the coal power plants and mines are far from Cape Town (located in other catchments), I would like to ask if you can see a  link between coal power/mining and water scarcity in South Africa with special regard to the Cape Town drought case? I'm looking forward to any idea. Thank you very much!