Estimation of Groundwater Quality in Arid Region or Semiarid Region by Using Statistical Methods and Geographical Information System Technique

Table 4

Diverse water quality characteristics weight and relative weight.

A chemical metric	Weight ()	Weighted average ()	WHO (2004) S
pH	4	0.072	9.6
TDS (mg/L)	6	0.118	1100
Cl^- (mg/L)	6	0.118	225
TH (mg/L)	3	0.046	500
Ca^2+ (mg/L)	4	0.072	80
Mg^2+ (mg/L)	4	0.072	35
HCO3^- (mg/L)	4	0.072	360
Na (mg/L)	6	0.012	210
K (mg/L)	3	0.046	25
SO4 (mg/L)	6	0.012	210
F (mg/L)	6	0.012	1
NO3^-	4	0.03	60