Sewerage

The City of Johannesburg’s wastewater treatment system is deteriorating significantly, with half of its plants in critical condition according to the 2025 Green Drop Report. Released on 31 March by the Department of Water and Sanitation, the report gives the metro an overall score of 48.8%, down from 91% in 2011. Failing plants are releasing poorly treated sewage into rivers, posing risks to public health and the environment.