Study On The Drinking Water Quality Of Non-central Supply Water In Typical Karst Mountain Region

Drinking water quality is directly related to people's health and regional economic and social sustainable development. It is the focus of attention of international and domestic general. In karst mountain areas, it was facing a serious shortage of water resources of seasonal, water quality, engineering. Because the special natural conditions and human activities. In order to solve the problem of drinking water in karst mountain, the local villagers under the leadership of the government have built a variety of Non-central supply water projects to collection of rainwater and surface karst spring water, but these water supply projects designed primarily is maximize the collection of water to meet the people living and production needs. However, the researching on water quality is particular weak. The drinking water quality of Non-central supply water does not cause people's attention. In such situation, it is necessary to study the drinking water of Non-central supply water in karst mountainous areas. This not only can find out the water quality pollution status, pollution sources and channels of Non-central supply, but also can guide people to take appropriate measures to protect and control of the water pollution. The study is of great practical significance to protect people's health and the building of new socialist countryside and harmonious society.This paper chooses a typical karst mountainous region of Shiqing Village at Nanping Town in Chongqing as the study area, using data collected, field survey, the typical sampling and laboratory analysis methods, according to the Standards for Drinking Water Quality (GB5749-2006), using the method of single-factor indicators and composite index, to study the drinking water of Non-central supply water projects of collect rainwater and surface karst springs water, analysis water quality of the water supply project to collect rainwater and surface karst springs water in the study area and probe into its impact factors.The results showed that the drinking water quality situation is not optimistic. The main problems are obvious sensory traits, higher pH, some exceeded ion concentration, and exorbitant bacteriological indicators. We found:rainwater quality was generally better, indicating the local atmosphere is no pollution. However, the sensory characteristics is obvious, strengthen the management of the rain and make it really be the good drinking water of local people.Through the analysis, it is considered that the water contamination comprises recharging water contamination and supplying water contamination. Pollution factors: the natural environment, human activities of the production and living, water supply project. There are many ways of the water pollution, precipitation, surface-underground runoff pollution, water diversion process, saving the process of pollution.To combine the Non-central supply water status and the characteristics of the study area, we propose the measures of comprehensive protection and management of drinking water Non-central supply water quality, these are improving Non-central supply water project, taking the chemical purification steps, using biological treatment technology, attending to water sanitation, and strengthening the regulatory aspects of water resources. This analysis will provide reference for the residents and the area of using Non-central supply water.