| Water is the basic nature resources and strategic economic resources. Groundwater is important water supply source of many cities in the northern region in our country and it plays a very important role in the local economy and social development. With industrial and agricultural economic sustainable development of Panshi City, the demand for water increases and the contradiction between supply and demand of water resources increase, groundwater pollution has been worsening in recent years. The paper is against the current development and existing problems of groundwater in Panshi City. It aims at grasping groundwater state of the environment objectively under the effect of human activities, protecting groundwater environment in Panshi City and achieving sustainable use of ground water resources Panshi City. On the basis systematic analysis of groundwater resources formation and the occurrence conditions of physical geography, geology and hydrogeology. We adopt water balance method to calculate groundwater recharge and resource exploitation of various typical years. According to the uneven status of groundwater exploitation extent in research district, we can calculate groundwater development potential. We used the monitoring data of groundwater quality in 2002, adopted a variety ofevaluation methods to evaluate groundwater quality and reflected the groundwater quality status influenced by human activities objectively in Panshi City. Based on the previous study, we adopted fuzzy comprehensive evaluation method to calculate the value of water to guide the water price reforms in Panshi City. This study may supply decision-making rule for rational exploitation and scientific management of groundwater resources in Panshi City. And it has great practical significance for achieving the sustainable use of groundwater resources in Panshi City.The main achievements of the paper are as follows:1. The analysis of groundwater occurrence and environmental conditions and the survey of pollution.We mastered the groundwater macroeconomic quality situation through the analysis of groundwater occurrence and environmental conditions and the survey of pollution. The region where has poor groundwater quality is the main urban areas of groundwater landed depressions in Panshi City. There are two reasons for poor groundwater quality. First, all kinds of polluting substances went into groundwater bodies caused by lowering of the groundwater table and water quality deteriorated. Second, the long-term exploitation of groundwater led to a significant decline in local groundwater, and groundwater flew faster. So the lixiviation between water the rocks increased and various ions in the groundwater generally increased and total hardness was excessive. Groundwater chemical composition content is increasing from the far away the urban areas to the urban areas.2. The calculation of groundwater resources amount.The paper has determined the path of groundwater recharge, runoff and discharge by means of analyzing the characteristics of groundwater distribution and cycle. We adopt water amount equilibrium method to calculate groundwater resources amounts of various typical years. The groundwater recharge amount is 1429.1×104m3·a-1 when the guaranteed rateof precipitation is 50%, the allowable withdrawal of groundwater resources in that year is 1769.32×104m3·a-1. The allowable withdrawal of groundwater in river valley is 1453.7×104m3·a-1.and the modulus of allowable withdrawal of groundwater is 24.23×104m3·km-2·a-1.3. To analyze groundwater exploitation potentiality.The paper calculated the coefficient of groundwater exploitation and the modulus of groundwater resources potentiality in seven sub-zones including three water source fields and urban district, by using the present actual withdrawal of groundwater and the allowable withdrawal of groundwater on condition that the guaranteed rate of precipitation is 50%. Groundwater exploitation potentiality of fissure-karst water in Changjia areas and pore water in Dongxingli areas are large, where the modulus of groundwater resources potential are 65.64×104m3·km-2·a-1 and 19.33×104m3·km-2·a-1 respectively. Groundwater exploitation potential of No.1 and No.3 water source fields are very small. Withdrawal of No.2 water source field is little beyond its allowable withdrawal of groundwater, so there is totally no exploitation potential. Groundwater of urban district is serious over-exploitation, so the withdrawal should be compressed.4. The water-quality evaluation of groundwater supplying.The paper evaluated the water-quality of groundwater supplying according to the monitoring results of water-quality in 2002, including drinking water evaluation, industrial water evaluation, agricultural water evaluation. Almost all the groundwater in the study region meets drinking water standards, yet in some areas individual index exceeds the standard due to the adverse effects caused by human activities. Groundwater in the study area won't have the erosion hazard to the concrete as the construction water. The groundwater will have the damage to the boiler because of hard scale formation is relatively strong as the boiler water, however, it won't have blister harm and corrosive hurt to the boiler. The groundwater in the studyarea won't have the defective effect on the main crop growth as long-term irrigation agricultural water.5. Quality of groundwater environment assessment.The paper selected the evaluation factors to evaluate the quality of groundwater environment, such as TDS, total hardness, Cl-, SO42-, et al. The evaluate results of the four evaluation method are uniform, which are F value method of Chinese standard, fuzzy integrated judgement method, grey clustering method and NN method. The majority of local groundwater quality is good, reaches I orⅡlevel of water quality standard. The content of each chemical constituent gradually increases from faraway areas to urban district. The groundwater quality reachesⅣorⅤlevel of standard in urban district, where groundwater suffers from contamination. The groundwater depression cone of urban district is the main induction factor of groundwater contamination.6. To calculate the value of water resources.The water resources value in Panshi city has been calculated by an established fuzzy mathematical model with evaluation factors such as water quality, water resources amounts, gross national product and population density according to the real situation of Panshi city. The results of water resources price in Panshi city is 2.8 yuan($)/m3. At present the average water price in the city is 2.4 yuan($)/m3, which is low obviously. Therefore water price reform is necessary.
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