Groundwater is the most important natural resource required for drinking to people around the world, especially in rural and urban areas. The present study is accomplished to evaluate the quality of groundwater on the bank of Noyyal River for the purpose of drinking and domestic usage by using Water Quality Index (WQI). The study was carried out in rainy season 2013. The results were evaluated and compared with WHO water quality standards. The present study indicates that most of the groundwater samples are very poor and unfit for drinking purpose.
