On April 20, 2013, the Ministry of Land and Resources issued the 2012 China Land and Resource Communique. It disclosed that close to 60 percent of China’s underground water was rated poor. Of the sites tested, 16.8 percent were found to have extremely poor water quality. The study was conducted by checking the underground water quality at 4,929 testing sites in 198 regions.
Source: Xinhua, April 20, 2013
http://news.xinhuanet.com/local/2013-04/20/c_115468685.htm