摘要：Water is most essential and precious object on earth for every life. The fresh water has always demanding for any biological activities. Due to increasing population, these demands have some limitations. WQI gives quick assessment of any water system. The present work focuses on the quality of ground water in an industrial town, Hosur (Tamil Nadu). The physico-chemical characteristics were determined during rainy season for the parameters such as pH, dissolved oxygen, total hardness, chloride, total alkalinity, turbidity, EC, TDS, sulphates, iron, fluoride, nitrate, sodium, potassium, arsenic, lead, cadmium, zinc, manganese, BOD, COD etc. of seven sampling sites.
