ABSTRACT
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,