Groundwater is the main source of water used in the West Assiut combined cycle power plant (WACCPP). In this paper, the water quality in this area (wells water samples) and raw water (wells water collecting tank sample) are investigated in terms of physicochemical properties, and its agreement with the World Health Organization (WHO) standard limits. Statistical analysis, correlation analysis, and hierarchical cluster analysis are used to analyze water chemistry data, classify water samples, and assure obtaining accurate results. The water quality and pollution indices, such as water quality index (WQI), water pollution index (WPI), heavy metal pollution index (HPI), heavy metal evaluation index (HI), and human exposure risk index, are considered herein. The study results showed that water classification, in this area regarding salinity, is fresh to slightly brackish water. Results showed also that the raw water is …