Blue algae a threat to clean water supplies
Print Edition
Environmental authorities in east China’s Anhui Province are struggling to ensure clean water for local residents because of blue algae in Chaohu Lake, the country’s fifth largest freshwater lake.
Blue algae was more than nine times the normal level on July 1 and has been hard to contain, said Zhu Yu, deputy director of Anhui’s environment monitoring center.
Dozens of workers are engaged in removing the algae from the lake and about 120,000 tons has been collected so far.
“We are closely watching the water quality. Microcystin, a toxin which threatens drinking water, has not been detected. We have also stepped up purifying procedures to ensure water supplies,” Zhu said.
An emergency water supply is ready, Zhu said, and about 50,000 tons of water can be supplied from other water sources in 10 days.
He Zequn, deputy director of environment protection department, said Chaohu’s blue algae blight had eased over the last few years, but this year had apparently relapsed.
More than 220 million yuan (US$35 million) has been spent to contain blue algae this year.
“The relapse is a new warning to us. We have to keep up with efforts,” He said.
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