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Highly polluted reservoirs in Gauteng and the North West, including Hartbeespoort Dam, should be fenced off because of the health risks they pose to people and animals from blooms of toxic cyanobacteria. Photo: Getty Images

ACID MINE DRAINAGE

Faecal pollution severely contaminates SA’s rivers, dams – report

More than half of the sites showed a high health risk if water was used for irrigation

Sheree Bega