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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

Seal off polluted dams to protect public health, says water expert

About 80% of the country’s dams are so enriched with nutrients they could produce toxic algal blooms

  • Sheree Bega
8 min read