There is also a high incidence of bronchial problems and asthma in the area.
They say one of the main contributors to the problem is the Consol glass factory.
Brian Roger, Consol manufacturing technical director, said the company had undertaken to install new technology at a cost of R38-million that would dramatically reduce emissions from the factory.
He said construction had already started and everything would be in place by August. "The new equipment will address the by-products in the emissions and the pollution will clear up."
The Bellville South Environmental Forum, made up of representatives from surrounding suburbs, the Cape Town municipality, provincial officials and representatives of the industry, has had numerous meetings to tackle the problem of high sulphur emissions.
Forum chairperson Cedric Jacobs said numerous tests had been done that showed Consul was responsible for 40 percent of sulphur emissions in the air.
"They were pumping out more sulphur than any one else," said Jacobs.
He said the problem was that the factory's four furnaces operated at extremely high temperatures, producing toxins.
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