Study On Rural Drinking Water Safety Evaluation Of Coastal Area In Fujian Province

At present, the problem of rural drinking water safety has been a hinder and becomes the main restricting factor in the process of rural modernization and building a well-off society in all-round way of China. Up to the end of 2004, the amount of drinking unsafe water rural population is 3 hundred million, among which 1.9 hundred million supplied with unqualified drinking water which contains standard-exceeded deleterious materials. The Chinese government has claimed the target of resovling the rural drinking water safety problem till 2020, and also has brought this plan into the Eleventh Five Year Plan.In the southeast coastal area of China, Fujian Province is one of the most important economic zones which possesses rich water resources whereas with conspicuous structural contradiction of drinking water problem in rural areas. Water quality and quantity, the guarantee rate of water source and water use convenience is insecure, which seriously affected the development of the rural economy and rural population's health. Therefor, Fujian Province has put the development of rural drinking water project and the building of rural drinking water safety guarantee system as the primary task of the Eleventh Five Year Plan of Fujian Province.The rural drinking water evaluation index system which was put forward in 2006 provided a base for rural drinking water evaluation of some rural districts.Yet rural drinking water safety evaluation and research has a late start, there is a lack of pertinent case studies of the evaluation index system and the corresponding appropriate methods. The socioeconomic development of the southeast coastal region is vital to the sustainable development of China' economy, however, reseaches on the rural drinking water safety guarantee system of this area is rare to see. On the premise of the above, to study on the level of rural drinking water safety systematically is significant for the establishment of the rural drinking water guarantee system in coastal areas of Southeast China. Moreover, the progress of the study can be used as scientific reference of governmental policy decision for foundation construction and management policy.This thesis considered the representative quality of regional characteristics and comparability, chose Zhangpu town as the study subject, according to the resolve target of rural drinking water safety of Fujian Province till the year of 2015, factors affecting the establishment of drinking water safety system were analyzed, an index system that can truthfully reflected the actual situation of rural water safety and development level of local water supply and their safety grading criterion were set up. A weight structure of evaluation indexes consisted of safe attribute weight and security grading weight on the basis of evaluation index system was presented, the two weight can be computed by using accelerating genetic algorithm based fuzzy analytic hierarchy process, and can be synthesized combination weight based on minimum relative information entropy principle, which formed a model for rural drinking water safety evaluation, named CWMRE for short. Quantitative evaluation of local rural drinking water safety level reflected by comprehensive assessmentvalue------safety rate, was carried out by using this model. It provided a measurablemeans for systematic and quantitative assessment of rural drinking water safety and also a scientific base for improving the guarantee rate of rural drinking water safety, furthering rural water supply project development. Meanwhile, Contraposing to the evaluation results and the problems related to rural drinking water safety in Zhangpu Town, some advice and countermeasures are drawn to ensure rural drinking water safety in view of technique means, management system, public consciousness and policy lead based on the principle for harmonious coexistence of human and nature and guided by sustainable development concept.This study took the coastal rural regions of Fujian Province as the study subject for the first time, the correlative progress is worthy of consulting for the sustainable and harmonious development between the society and economy of the West Taiwan-Strait Zone.