Background: Groundwater pollution ensuing from ion exchange, weathering, agricultural and anthropogenic activities is on the rise in Nigeria. Since groundwater is used for domestic purposes, there is need for routine investigation. Findings on hydrochemistry of the groundwater components is essential for efficient and viable management. As a result, 25 Abuja water samples were collected for microbial and chemical analyses using standard methods. The cations, anions, soluble ions, trace elements, and heavy metal were obtained and compared with WHO standards. Results: The Discriminant analysis results shown that the parameters such as hydrogen ion concentration (pH), temperature (T), alkalinity (Alk), dissolve silica (SiO 2), and cations such as calcium (Ca 2+), potassium (K +), as well as anions such as carbonates (CO 3 2−), fluoride (F −), nitrates (NO 3 −), and heavy metal (Mn) were within the WHO guideline values for drinking water in all the samples for both seasons. Na + , SO 4 2− , EC, Mg 2+ , TDS, Fe 2+ , HCO 3 − , F − , TH and Cl − contents exhibited the most violation of drinking water standards with percent violations of 100, 76, 64, 56, 56, 44, 40, 40, 36 and 24%, respectively. The highest level of significant correlation was found to exist between K + and EC (r = 0.77, α = 0.05). Four hydro chemical clusters were identified from Hierarchical cluster analysis (HCA) with clearly partitioned water quality. Series and time series plot reveals TDS concentration value between 1200 and 2100 mg/l, has the highest with the mean and SD are 1433.76 and 459.38, respectively. Further analysis revealed that 16, 36 and 48% of the samples were the Ca-Cl, Na-Cl, and Mixed types, respectively. Conclusion: Groundwater in the Abuja district is mainly hard to very hard, slightly acidic in nature, polluted by ion exchange, agricultural activities, anthropogenic activities, and weathering. Therefore, there is also need for routine monitoring of groundwater in Abuja.