Ecology, Environment and Conservation Paper

DRINKING WATER QUALITY EVALUATION FOR GROUNDWATER OF DELHI, INDIA USING GIS TECHNIQUES

Ayushi Raghav and S.K. Singh

Abstract

Groundwater is considered to be an important water resources because of it’s widey use in drinking and irrigation purpose. Due to industrialization and urbanization, groundwater quality is deteriorating at a rapid rate. The present study evaluates the groundwater quality of NCT Delhi using drinking water quality parameters with the computation of water quality index (WQI) and coupled with QGIS technique. Raster interpolation technique, Inverse Distance Weighted (IDW) in QGIS software has been used to generate the spatial distribution map of water quality parameters. Six water quality parameters are used to evaluate the suitability of groundwater for the drinking purpose. WQI has been developed using eleven drinking water quality parameters. It was found that the majority of WQI of the study area lies in “poor” to “unsuitable for drinking” category.