SA may face water-contamination crisis
South Africa is on the brink of a water-contamination crisis, potentially as bad as the electricity fiasco of the past few weeks, the Business Times reported on Sunday.
In an alarming report, the National Nuclear Regulator (NNR) has confirmed evidence of contaminated crops and water, and has acted to protect people and livestock, the newspaper said.
The report is the latest of several recent indicators that the government is no longer able to monitor effectively and manage its vast infrastructure of dams, pipes, pumps and treatment facilities.
Among the alarming findings contained in a series of reports are the following:
- forty-three percent of dams managed by the Department of Water Affairs and Forestry have safety problems and require urgent repair;
- an estimated R180-billion is necessary to replace old water-service infrastructure countrywide, including in the major metro areas;
- waste water from mining operations appears to have seeped into the country’s groundwater system—a process known as acid mine drainage—raising concerns about future water supply;
- vegetables and fish collected in the Wonderfonteinspruit catchment area west of Johannesburg have been contaminated with radioactive uranium—and the NNR is testing milk and meat from cows grazing in the area; and
- water in the Wonderfonteinspruit area has also been contaminated by radioactive material, as well as by heavy metals and salts.
According to the NNR report, contaminated sites are now restricted zones. The report concludes: “The study has confirmed the presence of radioactive contamination in the Wonderfonteinspruit catchment area. Regulatory actions were taken to ensure that people and animals were protected.”
The regulator did not reply to the Business Times‘s questions before deadline on Friday.
Beeld newspaper reported on Saturday that, according to the NNR report, radioactive levels three times higher than permitted have been found in vegetables grown in wetlands in the Wonderfonteinspruit area between Randfontein and Potchefstroom.
The newspaper said tests on asparagus, oats and onions produced in the Gerhard Minne wetlands showed that the level of radioactive substances was three times higher than the safe permissible level for human consumption.
Other vegetables grown in the area, such as cabbage, beetroot and spinach, will now also be tested for traces of lead, cadmium, arsenic, zinc and cobalt.
Higher-than-permitted radioactive substances in food get into humans’ bloodstream. It can lead to fatal kidney failure and various forms of cancer.—Sapa