Water is necessary for survival of living beings. Groundwater is a vital renewable resource. It is 1.7% of the global water quantity. In India, about 90% rural population and 30% urban population depend on groundwater for drinking and domestic requirements. In the present study, groundwater quality has been assessed for drinking purpose in Charkhi Dadri city. Twenty four groundwater samples were collected from different locations in the study area. The collected groundwater samples were analyzed for chemical parameters-pH, TDS, Cl, HCO , CO , Mn, Zn, Fe, Mg, Ca and 3 3 K. The results of chemical analysis of groundwater samples were campared with BIS 10500:2012 drinking water standards. In the study area pH ranges 6.5 to 7.8 and desirable at all the groundwater sample locations, TDS ranges 190 mg/l to 2850 mg/l and non-potable at two sample locations-Near Arvind Hospital (2770 mg/l) and Prem Nagar, Delhi Bypass (2850 mg/l) while desirable at other sample locations in the study area, chloride ranges 10.2 mg/l to 200 mg/l and desirable at all the sample locations, carbonate ranges nil to 0.2 mg/l and desirable at all the sample locations, bicarbonate ranges 0.2 mg/l to 0.7 mg/l and desirable at all the sample locations, total hardness ranges 9 mg/l to 64.5 mg/l and desirable at all the sample locations, calcium ranges 3 mg/l to 21.5 mg/l and desirable at all the sample locations, magnesium ranges 6 mg/l to 43 mg/l and permissible at eight sample locations i.e. Champapuri (35.67 mg/l), Near Ganpati Garden (33.33 mg/l), Shiv Mandir, Main Market (33 mg/l), JVM College Stadium (33.33 mg/l), Easy Day (43 mg/l), Near Municipal Council (38 mg/l), Old Hanuman Mandir (38 mg/l), Gwariya Kua (33 mg/l)while at rest of the sample locations it is desirable, potassium ranges nil to 77.4 mg/l and desirable at all the sample locations, manganese ranges nil to 0.73 mg/l and desirable at Mahendragarh Bypass (nil), Near Jhadu Singh Chowk (0.09 mg/l), Near Bala Wala Mandir (0.03 mg/l), Ram Leela Ground (0.1 mg/l), Gwariya Kua (0.03 mg/l) and permissible at Near Arvind Hospital (0.15 mg/l), Near Loharu Chowk (0.18 mg/l), Near Ganpati Garden (0.12 mg/l), Geeta Bhawan (0.16 mg/l), Near Municipal Council (0.15 mg/l), Mejbaan Hotel Chowk (0.2 mg/l) while non-potable at Prem Nagar, Delhi Bypass (0.31 mg/l), Back side Champa puri (0.63 mg/l), Near Rawaldhi Bypass (0.73 mg/l), Champapuri (0.42 mg/l), Hanuman Mandir,Ghikara Chowk (0.58 mg/l), JVM College Stadium (0.51 mg/l), New Sabji Mandi (0.4 mg/l), Easy Day (0.38 mg/l), Old Shiv Mandir (0.4 mg/l), Kabaddi Market Road (0.42 mg/l), zinc ranges 0.58 mg/l to 7.62 mg/l and desirable in all groundwater samples except at Easy Day (5.12 mg/l), Near Municipal Council (7.62 mg/l), Old Hanuman Mandir (6.21 mg/l) where it is permissible, iron ranges 0.07 mg/l to 0.43 mg/l and desirable in all the groundwater samples except in groundwater samples at JVM College Stadium (0.33 mg/l) and Gwariya Kua (0.43 mg/l) in which it is non-potable. The study is highly useful for planning of groundwater supply for drinking purpose in the study area.