Wastewater pollution in the Klip River catchment has led to criminal proceedings against the City of Johannesburg, the City of Ekurhuleni and Mogale City, according to the Department of Water and Sanitation. Supplied/James Oatway Criminal proceedings are at an advanced stage against the City of Johannesburg, the City of Ekurhuleni and Mogale City over wastewater pollution linked to the Klip River system.