Question

Which perameter is not a good perameter to contamination in ground water?

Answer 1

depending of which are you expecting to probe..I think maybe you may use a multiparamether to determine some of the common variables you need to characterize the kind of water. First of all you have to decide which guide you are going to follow. "Water Quality Assessments - A Guide to Use of Biota,

Sediments and Water in Environmental Monitoring" of D. Chapman could be usefull. Regards!