Evaluation of Groundwater Quality Based on Multi-model of Mean Square Deviation and Fuzzy Synthetic Judgments

The multi-model of mean square deviation and fuzzy synthetic Judgments is firstly used to evaluate the deeper groundwater quality of Guan-zhuang in Jixian,by choosing the major affected factors.The result shows that the groundwater quality of samples in the area is all in grade I and in a state of better.While super-standard of nitrate is the reason leading to pollution of groundwater.The conclusion is approximately uniform with that before.It was proved that the multi-model of mean square deviation and fuzzy synthetic Judgments is applicable in evaluating groundwater quality.