Water is an essential natural resource for sustaining life and environment but over the last few decades the water quality has been deteriorated due to its over exploitation. Water quality is essential parameter to be studied when the overall focus is sustainable development keeping mankind at the focal point. The present study was conducted to analyze the various parameters of under-ground water in rural areas of Narwana city, Haryana, India and to check its fitness for drinking. Physico-chemical parameters viz. TDS, pH, fluoride, nitrate, chloride, sulphate, hardness and alkalinity were investigated. The results were compared with drinking water quality standards prescribed by the Bureau of Indian Standards (BIS). Ground water sampling carried out in January 2015 to April 2015. Most of the water samples were found to have total dissolved solids, alkalinity and hardness values more than their permissible level. The high values of these parameters might have health complications and so they need attention. The above studies are helpful to understand the ground water quality and their subsequent fitness or unfitness of water for drinking domestic purpose at various sites undertaken. It is concluded that the water quality of water supply systems in different locations of Narwana is of medium quality and can be used for domestic use after suitable treatment. Suitable suggestions have been made to improve the quality of water.