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September 20, 2010

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Plan calls for emergency wells

SHANGHAI is planning to dig deep wells in large residential areas in the next five years to secure a stable water supply during emergencies, officials said yesterday.

The Shanghai Water Authority said the wells will have a dual purpose - provide water and prevent subsidence.

Tap water will be injected into the wells to increase the amount of groundwater and prevent subsidence, the utility said.

Trial construction of 10 emergency wells has been ongoing at eight colleges, including Fudan and Tongji universities, and more details would be released by the end of this year, officials said.

"The chances are very slim that the wells will be used since the tap water network is stable," said an official surnamed Wei from the authority's water supply division. "But they will improve the water supply system for any emergency."

According to the authority, each emergency well should be able to supply 80 to 120 cubic meters of water per hour. Water purifying equipment will also be installed.


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