date:Mar 15, 2013
r source protection is still lagging behind. Though provinces and cities have worked out local regulations, they often fail to work when the pollution crosses boundaries, said Zheng Zheng, director of River Basin Pollution Control Research Center of Fudan University.
The problem not only exists in Shanghai, but in many other parts of the country, Zheng said.
Pollution risks can occur in upper streams at any time, which puts pressure on the lower stream, he said. The different responsibilities