A Geospatial Analysis of Ground Water Quality Mapping using GIS in Sangareddy District

Abstract

Now-a-days ground water has become as essential resource due to an increase of its need for domestic, agricultural and industrial uses etc., consequently ground water quality is very important as its quantity.GIS helps in better understanding of spatial patterns and relations. The present study represents the spatial variability of ground water quality mapping for Sangareddy district, Telangana. The thematic map of groundwater quality parameters, such as pH, TDS, Calcium (Ca), Chloride (Cl), Sulphates (SO4), Nitrate (NO3), Fluoride (F), Hardness has been tested for all the water samples in order to understand the hydro geochemistry of the groundwater. The results obtained for water quality parameter were compared with standard parameter values suggested by the Bureau of Indian Standards (IS 10500:2012) for drinking water suitability. The spatial contour map of these groundwater quality parameters was derived in Arc Map10.5 software using an Inverse Distance Weighted (IDW) spatial interpolation technique. The study facilitates to understand the existing groundwater quality conditions and to develop appropriate management practices to protect the groundwater sources. Index Terms-Groundwater quality parameters, Arc GIS, spatial contour maps, overlay analysis