pH
The concentration of hydrogen ion present in the water is more important, and it helps to identify the nature of groundwater whether the water is acidic or alkaline (Aravindan et al., 2010). However, the pH of groundwater in the study area ranges from 7.3 to 8.2, with an average of 7.8. It shows that the pH value for all the sample locations is most suitable for drinking purposes recommended by WHO (2011) and BIS (2012) standards. In the spatial analysis, an acceptable level of pH covers 666.95 Sq.km (Fig.3a).