Data sources: according to Chinese industrial control network data processing, statistical

②     Surface water quality on-line monitoring market

According to the 2009 state of the Environment Bulletin of statistics, the Yellow River, Yangtze River, Pearl River, Songhua River, Huaihe, Haihe River and Liaohe River pollution is generally mild seven. 203 rivers 408 surface water monitoring section, I - III, IV and V and worse than V water quality section respectively 57.30%, 24.30% and 18.40%. The major pollution indicators for potassium permanganate index, BOD and ammonia nitrogen in five days. Among them, Pearl River, the Yangtse River water quality is good, the Songhua River, the Huaihe light pollution, the Yellow River, Liaohe is moderate pollution, severe pollution of Haihe river.

Percentage of water quality grades 河的名字改为拼音，  类字删除。

Data sources: 2009 Environmental Status Bulletin

Chinese Academy of Social Sciences, environment and Development Research Center Deputy Director Zheng Yisheng points out, China issued a variety of water environmental quality inspection report, due to the number and layout of layout of regional restrictions," does not adequately, truly reflect the domestic present situation of water pollution in". At present, the State Environmental Protection Administration setting water quality monitoring section, basically distributing in water is relatively abundant, relatively strict regulatory rivers or the main River mainstream, the tributaries of the monitoring are almost blank field. In small towns and the vast rural areas, the actual volume of sewage discharge and River tributary, the degree of pollution, are likely to be much more serious at present figures. The current water quality monitoring situation reveals the Chinese water pollution and water quality monitoring in the construction of backward degree. Therefore, the problem of water pollution, must first do water quality monitoring.

In recent years, the water quality automatic monitoring technology in many national surface water monitoring has been used widely in our country, the automatic water quality monitoring station construction also obtained greater progress. According to the" 2008 national environment statistical bulletin", the national surface water quality monitoring section number 9635, coastal waters monitoring point 1203, carry out drinking water source water monitoring of city number 1021. According to 2007-2009 years" China Environmental Status Bulletin" statistics show, the main rivers, lakes, key water conservancy project of surface water control monitoring section, 569 as of 2007, 571 in 2008, 633 in 2009. The water sector in recent years have begun to pay attention to water quality monitoring, and gradually established a nationwide network of water quality monitoring system. Water system water quality monitoring work mainly with the hydrological station combination, on the fixed basin water, hydrology, water quality and monitoring.

According to the China Industrial Network predict, 2010, surface water quality monitoring equipment market dimensions is 572000000 yuan. 2010 surface water quality online monitoring system to subdivide the market capacity is as follows: