According to the authoritative data, in the 198 prefecture-level administrative regions monitored, in nearly 60% of the cities the quality of ground water is poor” out of which 16.8% are having very poor water quality.
The recently released “Bulletin of China’s Land and Resources 2012” administered by the Ministry of Land and Resources reveal that the total number of the monitoring points is 4,929, including 800 state-level monitoring points. Based on quality standard for underground water, the concluded results in relate to water quality in the monitored 198 cities are as follows:
|Quality of underground water||Very Poor||Poor||Fair||Good||Excellent|
|Number of monitoring points||826||1999||1348||580||176|
The major ingredients exceeding the standard are iron, manganese, fluoride, the three nitrogen (nitrite nitrogen, nitrate nitrogen and ammonium nitrogen), dissolved solids, sulfate, and chloride. Heavy metals is exceeding the standard in a few monitoring points.
|Water quality||Stable/Unchanged||Better water quality||Worse water quality|
|Number of monitoring points||2974||793||910|
Compared with the previous year, the number of monitoring points with stable/unchanged water quality is 2974, accounting for 63.6%; the number of monitoring points with better water quality is 793, accounting for 17.0%; the number of monitoring points with worse water quality is 910, accounting for 19.5%.