Abstracto

WQI based study on Groundwater Quality in Lakkavarapu Kota region, Vizianagaram District, Andhra Pradesh

G.V.R. Srinivasa Rao, G. Rupa Kumari, T.P Sreejani and B.Kalyanaramu

Introduction. The present work aims at investigating the groundwater chemistry in Lakavarapu Kota region of Vizianagaram district by analyzing the groundwater samples collected from several sampling locations spread across the study area uniformly.

Materials and methods.360 groundwater samples, 120 samples each in Post-monsoon (November 2018-February 2019), Pre-monsoon (March 2019-June 2019) and Monsoon (July2019-October 2019) are collected from bore holes of 30 selected locations in the study area at regular monthly intervals and analyzed for various quality indicating parameters such as pH, EC, TDS, TH, TA, Ca2+, Mg2+, Na+, CO32-, HCO3-, Cl-, SO42-, NO3-, F- using standard laboratory procedures.

Results. A Weighted Arithmetic Water Quality Index (WAIWQI) method is used to assess the overall quality of groundwater in the study area. It is observed that quality of about 60% of the water samples is good, about 30% is poor and remaining 10% is very poor for drinking purpose in the study area.

Key words: Assessment, Fluoride, Groundwater Chemistry, Nitrate, Quality Indicators, Water Quality Index (WQI)