4. Conclusions
Groundwater in No. 2 water source site of Dawukou District are assessed with a novel and
easy to use method, the following conclusions are obtained.
(1) NH4
+ , F and
Mn in some of the groundwater samples are beyond the permissible limits
slightly. The comprehensive assessment results show that Tfe, pH and NH4
+ are the most
influencing factors affecting the groundwater quality and special attention should be paid
to these parameters to prevent further pollution. The groundwater quality in the study is
classified into good quality rank except well 41,
51
and 61
belonging to drinkable
quality. The groundwater in the study area is basically fit for drinking.
(2) The entropy weighted osculating value method is an effective method for groundwater
quality assessment. It can easily compute the groundwater quality ranks and can clearly
illustrate the comparison between two samples in the same rank. It can be calculated in
Microsoft Excel, which is most fit for junior engineering and students.