200 City 50% low groundwater quality pollution causes cancer high fat cattle and sheep sterilization

More than 200 "cancer villages", Yu Su Most public welfare people to make "Chinese cancer village map" Media said that the groundwater pollution caused cancer high fat cattle and sheep sterilization in Shandong Weifang has been suspected enterprises to deep underground sewage, the news, causing public concern about the status of groundwater and worry. Under the action of a variety of pollution sources, the pollution of shallow groundwater in China is serious and the pollution rate is fast. In 2011, the "poor-very poor" water quality ratio was 55% in 200 urban underground water quality monitoring. According to the Ministry of Land and Resources survey 10 years ago, 1.97 million square kilometers of the plain, shallow groundwater has been unable to drink the area of up to 60%. The situation of groundwater is urgent. "Grim status" 200 cities 50% groundwater Quality difference "there is no sewage treatment plant, there is no environmental supervision, some ancestors drinking groundwater tradition!" Zhao Liang, director of the Green Youth Leaders Association, a non-governmental environmental group, is worried about the threat of underground pollution to rural drinking water security. The Clear river, the translucent well, has become a memory. In a survey of the Haihe river basin last July, Mr. Zhao found many villagers forced to give up drinking well. 2000-2002 Ministry of Land and Resources for the national assessment of groundwater resources, according to the "Groundwater quality standards", 37% is not drinkable Ⅳ class, Ⅴ type of water. Underground water quality monitoring was carried out in 200 cities nationwide in 2011, with a ratio of "poor-very poor" water quality monitoring points of 55%. Compared with 2010, 15.2% of the monitoring points are deteriorating in water quality. Under the condition of insufficient surface water resources and some serious pollution, groundwater was considered as clean and stable water source. According to the "Underground Water Pollution Control Plan", 2009 China's groundwater exploitation amount of 109.8 billion cubic meters, accounting for 18% of total water supply. Of the 655 cities in the country, more than 400 use groundwater as drinking water, accounting for about 61% of the total city. In the absence of new water sources, the loss of groundwater, also means a survival crisis. "Multi-source" plain underground high-quality water only 4.98% 18th night, the reporter in Shandong Chaping County Dry Village interview, the villagers more than 10 meters deep in their own wells, hit the water yellow, the water has a thin youhua, the villagers dare not drink groundwater. In dry Han cun southeast corner, more than 500 acres of land, by an aluminum electric enterprise for polluting waste residue red mud. In recent years, many plain rural areas of water stale, discoloration of the news, often found in newspapers. The shallow groundwater is mainly extracted from the rural wells, and the surface water can penetrate into the shallow layer directly, and the pollution is the most serious. According to the second round of the 2001-2002 Land and resources survey, in the 1.97 million square kilometers of the plain, shallow groundwater Ⅰ class and Ⅱ type water quality distribution is only 4.98%, has not been able to drink Ⅳ, Ⅴ type area up to 59.49%. For many years, some industrial enterprises in urban, suburban and rural areas use pits, seepage and crevice to discharge wastewater, which is very serious to groundwater pollution. Cities are also one of the sources of pollution. Urban sewage emissions increased, but inadequate processing capacity, and even the leakage of municipal pipe network, will cause groundwater pollution. Groundwater pollution also occurs in rural areas. ExcessiveThe use of chemical fertilizers and pesticides, urban sewage irrigation, and so on, so that the soil pollution, the formation of the largest surface pollution source. In contrast to shallow groundwater, the quality of deep groundwater is good, which is also the main source of water for many cities. However, some areas of the aquiclude is very thin, and even opened the skylight, so that the contaminated shallow water into the deep water. "Hazard show" pollution to the drinking water crisis a "map of China's cancer village" produced by the public is being watched on the internet, and the number of villages is considered to be more than 200. Among them, the most cancer villages in Henan and Jiangsu provinces. February 20, the Ministry of Environmental Protection issued the "Chemical Environmental risk prevention and control" Twelve-Five "planning", said that individual places because of environmental pollution cancer village. Earlier, the groundwater pollution caused high cancer or even the sterilization of cattle and sheep reported in many regions appeared. In some areas, pollution has endangered public water security. According to the Ministry of Land and Resources website data, Liaoning Sea city sewage discharge caused by large area of groundwater pollution, near a village 160 people died of water, because of the serious pollution of groundwater, Zibo daily water supply 510,000 cubic meters of large water sources face scrap. According to the National Groundwater resources Evaluation of the Ministry of Land and Resources in 2000-2002, the results of 195 cities nationwide showed that 97% of urban groundwater was contaminated with different degrees and 40% of urban pollution trends were aggravated. According to the Beijing News