cyanobacterialatest news & developments
About seven billion litres of sewage are released every day into rivers and dams. (Andy Mkosi)

SA’s rivers and dams can no longer recover from pollution, say water scientists

About seven billion litres of sewage are released every day into rivers and dams This content is restricted to registered users and subscribers. Get Your Free Account The Mail & Guardian is committed to providing all our readers with the best possible experience. Please register your free account now. Your registration is your first step to becoming an M&G community member. Register Registration enables: – M&G newsletters access – notifications – the best possible experience Already registered? Login here Want to subscribe and get even more benefits? Explore our subscription offers

  • Sheree Bega
1 min read
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
Artificial lakes like Hartbeespoort must be treated and managed as semi-natural lake ecosystems to keep them healthy and support demands made on them such as raw potable water and recreational use. (Delwyn Verasamy/M&G)

SA rivers, dams, used as waste disposal systems, says ecologist

The nutrient enrichment problem can’t be solved unless appropriate levels of wastewater treatment are applied

  • Sheree Bega
6 min read