Groundwater quality assessment using the weighted arithmetic index method in the selected villages of Butchayyapeta Mandal, Visakhapatnam, Andhra Pradesh, India.

Groundwater quality assessment is an important measure to determine the usability of available water based on its physical, chemical, and bacteriological properties. In the present study, 10 physicochemical parameters have been considered for the groundwater quality assessment which include potential of hydrogen (pH), electrical conductivity (EC), total dissolved solids (TDS), sodium (Na), potassium (K), total hardness (TH), calcium (Ca), magnesium (Mg), bicarbonate (HCO), and chloride (Cl). For the analysis, 21 samples for pre- and post-monsoon periods were collected from the wells/bore wells of five designated villages, Chinna Madina, Chittiyyapalem, Typuram, Rajam, and Neelakantapuram of the Butchayyapeta Mandal (sub-district) located in Visakhapatnam District, Andhra Pradesh, for the year 2017.