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

Table 5

Piper tri-linear and Chadha diagram were used to characterise groundwater.

Water type characteristics		Sample percentage
		PRM	POM
Piper diagram subdivision
1	Alkalies () outnumber alkaline earth ().	55	70
2	Alkalies are more abundant than alkaline earths.	35	20
3	Weak acids () outnumber strong acids ().	50	60
4	Strong acids are more powerful than weak acids.	40	30
5	Type of magnesium bicarbonate	20	45
6	Type of calcium chloride	5	0
7	Type of sodium chloride	10	10
8	Type sodium-bicarbonate	0	0
9	Types are mixed	55	35