Around one in five households report harm from air pollution, a quarter from water and sewerage pipe bursts, and one in ten from water pollution. Modingoane said City monitoring found concentrations of particulate matter “periodically exceeding national air quality standards in certain areas”. While working with provincial and national authorities, it will continue to monitor air quality, enforce environmental regulations and run education campaigns, said Modingaone. Water and sanitationWhile one in five Johannesburg residents reported harm from air pollution, one in ten households experienced harm from water pollution, according to the GCRO research. With about 145 leaks reported per day and 328 water pipe bursts per 100 km of water pipes in 2024/25, Johannesburg Water has responded with a R64-billion turnaround strategy, which seeks to replace 85km of water pipes annually and upgrade sewer mains.