摘要：Abstract The objectives of this study are to analyze the underground water quality of Greater Noida region by water quality index. Nine physico-chemical parameters such as Calcium, Magnesium, Chloride, Sulphate, Total Hardness, Fluoride, Nitrate, Total Dissolved Solids, Alkalinity collected from 10 different locations since a period of 2015. In this study 90% water samples were found good quality and only 10% water samples falls under moderately poor category. The water quality index ranges from 16.49 to 64.65. Therefore there is a need of some treatment before usage and also required to protect that area from contamination.
关键词：water quality index ; ground water ; relative weight ; physico chemical analysis ; ground water quality
