Water Quality Indices Based Assessment of Groundwater Quality in Bhoghapuram, Pusapatirega and Denkada Mandals of Vizianagaram District, Andhra Pradesh, India

The Water Quality Indices (WQI) of Canadian Council of Ministers of the Environment (CCME) and Weighted Arithmetic (WA) models were applied to the assessment of groundwater quality for drinking in Bhoghapuram, Pusapatirega and Denkada mandals of Vizianagaram district of Andhra Pradesh. The groundwater samples were collected from bore wells of 22 selected sampling locations at regular monthly intervals (from November 2018 to October 2019) in the study area. Various parameters such as pH, EC, TDS, TH, TA, Ca2+, Mg2+, Na+, CO32-, HCO3-, Cl-, SO42-, NO3-, F- of samples were analyzed using standard laboratory procedures. Range and Mean for measured parameter values of each sample and terms of CCME index like Scope F1, Frequency F2, and Amplitude F3 were calculated. The overall quality was assessed using Canadian Council of Ministry of Environment Water Quality Index (CCME-WQI) and Weighted Arithmetic Water Quality Index (WA-WQI) Models. From CCME-WQI, it is observed that quality of about 4.6% of the water samples is Excellent, about 13.6% is Good, about 27.3% is Fair, about 22.7% is Marginal and remaining 31.8% is Poor. And from WA-WQI analysis, it is observed that quality of about 27.3% of the water samples is good, about 36.4% is poor, about 13.6% is very poor and remaining 22.7% is unsuitable for drinking purpose in the study area.