Assessment of water quality is important for planning and monitoring of water various purposes like drinking, irrigation and industrial uses. In the present era of developmental activities assessment of water quality is more important to avoid many health problems. The present study is carried out in Rajaund block in Kaithal district of Haryana with an objective to assess groundwater quality for drinking purpose. The 0 0 geo-coordinates of the study area are latitudes 29.51 N to 29.69 N and longitudes 0 0 76.35 E to 76.58 E and covers an area of 285.25 sq. km. Geologically alluvium and geomorphologically alluvial plain are present. In the study area eight groundwater samples were collected in 250 ml double capped plastic bottles from tube wells. Geocoordinates of sample locations were noted with the help of mobile GPS. Chemical analysis of eight groundwater samples were done using Tamilnadu Water Supply and Drainage (TWAD) Board, Chennai prepared Field Water Testing kit for twelve chemical parameters viz. pH, alkalinity, hardness, chloride, total dissolved solids (TDS), fluoride, iron, nitrite, nitrate, ammonia, phosphate and residual chlorine. Results of groundwater samples analysis were compared with BIS (IS 10500:2012) drinking water standards to know groundwater quality for drinking purpose. In the study area pH ranges 6.5 to 8, alkalinity 210 mg/l to 550 mg/l, hardness 50 mg/l to 650 mg/l, chloride 60 mg/l to 490 mg/l, TDS 540 mg/l to 1776 mg/l, fluoride 1.5 mg/l to 5 mg/l, iron nil in all eight groundwater samples, ammonia nil to 5 mg/l, nitrite 0.5 mg/l to 1 mg/l, nitrate 75 mg/l to 150 mg/l, phosphate nil in all eight groundwater samples and residual chlorine nil to 0.2 mg/l. The study is highly useful for planning and monitoring of groundwater quality for drinking purpose in the study area.