Mapping the groundwater quality in Coimbatore city, India based on physico-chemical parameters

Abstract

Groundwater resources are explored in nature with the development of irrigation activities, industrialization, and urbanization etc. This study focuses on mapping the quality of groundwater using Geographical Information System (GIS) software. Thematic maps were generated from Survey of India (SOI) toposheets on 1:50,000 scale using ArcGIS. Physio-chemical parameters of the groundwater samples were collected at predetermined locations., spatial distribution maps of water quality parameters such as pH, EC, TDS, Ca, Mg, Total Hardness (TH), Alkalinity, Cl 2 , Na, SO 4 2-and K of North Coimbatorewere prepared using ArcGIS 9.3. This provides the information about the existing quality of groundwater of the same area for the year2006. In this study, we have analyzed the samples of the same parameters discussed above and have estimated the risk prone levels in Coimbatore. This information can be further used to estimate the effect of water pollution in the regional level.