Groundwater quality assessment based on entropy weighted osculating value method

In view of provide scientific basis for groundwater resources protection and rational utilization, osculating value method was used to perform groundwater quality assessment in No. 2 water source site of Dawukou District and information entropy was used to determine the weight of each assessment parameter. The steps for water quality assessment with entropy weighted osculating value method were depicted in detail. The single index assessment showed that NH4⁺, F and Mn in some of the groundwater samples are beyond the permissible limits slightly, but the comprehensive assessment showed that groundwater quality in the study area was basically fit for drinking and the most influencing indices affecting the groundwater quality were Tfe, pH and NH4⁺. Special attention should be paid to these indices to prevent groundwater pollution. The entropy weighted osculating value method was proved an easy and effective method for groundwater quality assessment.