This study was conducted to investigate the drinking water quality of Bannu District. Water samples were collected from tube well and bore well, from the whole District. The samples were analyzed for physiochemical water quality parameters such as color, taste, odor, temperature, turbidity, pH, conductivity, dissolved oxygen (DO), salinity, alkalinity, hardness, calcium and magnesium hardness, chloride, phosphate, sulphate, sulphide, nitrate, sodium and potassium. The results of analysis are given in the tables. All the samples were colorless, odorless and tasteless, temperature is ranged from 32.4-33.4c0, Electrical conductivity ranged from 0.40-1.12 æS/cm, pH ranged from 6.04- 6.90, turbidity ranged from 11-12 mg/l, DO ranged from 2.10 - 2.19 mg/l, hardness ranged from 145 - 300 mg/l, calcium hardness ranged from 75-225 mg/l, magnesium hardness ranged from 25-95 mg/l, alkalinity ranged from 240-425 mg/l, chloride ranged from 15-67.47 mg/l, phosphate ranged from 5.47-6.90 mg/l, sulphate ranged from 230.4-465.6 mg/l, sulphide ranged from 0-5.36 mg/l, nitrate ranged from 8.1-9.8 mg/l, sodium ranged from 5-75 and potassium ranged from 0-10 mg/l.