The purpose of this research was to provide a description of the physical and chemical characteristics of groundwater in the Delhi National Capital Region (NCR) in India. A total of 50 water samples were collected from various locations and analyzed for different properties, including color, turbidity, electrical conductivity (EC), pH, total hardness, and total dissolved solids (TDS). The results showed that turbidity values ranged from 0 to 15 with an average of 2.6, while conductivity ranged from 203 to 8500 μS/cm, with an average of 1933 μS/cm. pH values ranged from 7.4 to 8.9, with an average of 7.8, while total hardness values ranged from 112 to 2990 mg/L, with an average of 488.7 mg/L. TDS values ranged from 230 to 5700 mg/L, with an average of 1020 mg/L. The analysis also revealed positive correlations between color and turbidity, conductivity and hardness, as well as total hardness and TDS, with correlation coefficients of 0.82, 0.79, and 0.81, respectively. In general, the findings suggest that there is significant variability in the physicochemical properties of groundwater in the Delhi NCR region, and all the properties are interrelated to each other with coefficient of correlation greater than equal to 0.79. Thus, if one property is measured by analytical method others can be calculated using regression equations. Ongoing monitoring is necessary to ensure that the population has access to safe drinking water.