Water is important for survival of life. Monitoring of drinking water quality is necessary for checking water related health problems. Anthropogenic activities have deteriorated quality of surface water and groundwater. Excessive use of groundwater for irrigation and industrial uses lead to the declining of groundwater depth and quality deterioration. The present study area Kalayat block is located in Kaithal district, Haryana. Kaithal block in Kaithal district. The geo-coordinates of the study area are 0 0 0 0 latitudes 29.55 N to 29.79 N and longitudes 76.17 E to 76.39 E and covers an area of 342.68 sq. km. Geologically alluvium and geomorphologically alluvial plain are present. The main objective was to study groundwater quality for drinking purpose in the study area. In the study area nine groundwater samples were collected in 250 ml double capped plastic bottles from tube wells and hand pump. Geo-coordinates of sample locations were noted with the help of mobile GPS. Chemical analysis of nine 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, 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 9, alkalinity 150 mg/l to 600 mg/l, hardness 140 mg/l to 1120 mg/l, chloride 30 mg/l to 730 mg/l, TDS 396 mg/l to 2904 mg/l, fluoride 1.0 mg/l to 5.0 mg/l, iron nil in all the nine groundwater samples, ammonia nil to 2.0 mg/l, nitrite 0.2 mg/l to 1.0 mg/l, nitrate 45 mg/l to 100 mg/l, phosphate nil in all the nine groundwater samples and residual chlorine nil to 0.2 mg/l. The study is highly useful for planning and monitoring of groundwater quality in the study area.