WUXI: Levels of the blue-green algae in Taihu Lake have
returned to normal and no longer pose a threat to the water supply for the
city's 5.8 million residents, a local official and scientist said here on
"Our latest monitoring and tests show the algae level in the lake is similar
to the average over recent years," Hu Weiping, a researcher with the Nanjing
institute of geography and lake science of the Chinese Academy of Sciences,
"The algae is quite normal in the lake at this time, and it is too much to
call it an outbreak at these levels," Hu, whose institute has been monitoring
Taihu Lake for two decades, said.
Earlier reports said satellite pictures of the lake showed it was covered in
carpets of the blue-green algae. The reports raised public fears the city would
once again suffer a loss of its water supply. An outbreak of algae at the end of
last month led to the contamination of tap water across much of Wuxi, Jiangsu
"After receiving the reports, environmental and meteorological officials from
State, provincial and city levels immediately formed an inspection team to visit
Taihu Lake. They found the situation was not as serious as the satellite
pictures suggested," Yang Weize, Party secretary of Wuxi, said.
The city has also established six working mechanisms to ensure a safe water
supply for local residents, Yang said. They include round-the-clock monitoring
of water quality at the lake and closing factories and farms that cause
The Zhongqiao Water Plant, which produces 600,000 tons of tap water for the
city every day, pours about 10 tons of active carbon into the water to filter
"Unchecked tap water will not be allowed to flow out," Zhou Shengdong, head
of the water quality examination center of the city's tap water company, said.
She said the company will guarantee the city's tap water quality by observing
the new national water quality standard, which comes into force at the beginning
of next month.
(China Daily 06/23/2007 page1)