Research On Evaluation Indices System Of Ground Drinking Water Source Security For Cities

The development of the society with the population increased, the pollution of drinking water had become a major environmental problem, improve drinking water quality, ensure healthy drinking water, had become a concern of the whole society. It was very important to protect ground drinking water source. In recent years, due to the acceleration of the industrialization process, many cities and drinking water sources were contaminated the surrounding environment so that water quality deterioration, seriously affect people's health and the sustainable development of the local economy. People deeply realized to protect the water sources, but also fully aware that to improve water safety evaluation system for the need.For widespread social concern of drinking water safety, the paper made the ground drinking water safety evaluation index system, using of modern concepts and advanced technology, and made more satisfactory results, Key findings are as follows:(1)Combined modern natural science with environmental science, the paper explored the basic safety of city's drinking water resource content: a continuing supply capacity on the basis of an adequate water, safe water and strong environmental bearing capacity, to protect the surrounding environment are in good condition, can be greater level of safe drinking water to meet the needs of the people;(2)The text has builded up the evaluation indices system of ground drinking water source security, including the water volume, the water quality , the vulnerability of water source and the ecological environment, altogether 4 items first order index,12 two stages index, and raised corresponding analytical methods on studying on domestic and foreign sources through research and evaluation system status and safety of existing water sources and domestic security evaluation system for the lack of water sources. In the system of water quality, water safety on the basis reflects the impact of human activities and the vulnerability of water resources and ecological environment of security, a more comprehensive reflection of the security of drinking water sources.(3)Take the Dongwu drinking water source for example, the result show that the water is unsafe, and water sources in line with the actual situation shows that the safety evaluation system has a feasibility operable;(4)In the GMS technology platform, shows the water hydro-geological structure of three-dimensional visualization profile entities, and the use of water DRAMIC model for vulnerability assessment, the evaluation results were more intuitive.