[01] Wafa Khalleefah Amhimmid, Chemistry Department, Azzaytuna University, Tarhuna, Libya. [02] Emhemmad Jumha Emhemmad, Chemistry Department, Sebha University, Taraghun, Liby. [03] Mahmoud Abdullha Ali, Faculty of Engineering and Technology, Sebha University, Brack Al-Shati, Libya.

Groundwater is the most important water source in the study area due to its occurrence within the dry areas, therefore it became necessary to evaluate and study the quality of Murzuq basin water which located in the southern east of Libya. It is a one of the largest reservoirs in Libya, it covers 350.000 km² containing 7700 km³ of freshwater, about 4100–13800 years old. This study investigated the quality of drinking water supplied from the Murzuq basin to the general drinking water network of Murzuq city and suburbs. A total of 10 sites were selected for water analysis. Chemical and physical parameters were determined and compared to the WHO and Libyan Standard. The results obtained from this study showed in terms of a difference in the concentrations of salts in drinking water, the pH values were between 5.50 - 7.73, while the concentration of Total dissolved salts TDS range between 54 - 1903 mg/L, the water sample of wall No. 7 exceeded the permissible limit within the specifications, the EC value is between 85 - 2970 µs/cm³, while the total hardness concentration was between 20 - 992 mg/L and there are samples of water No. 7 and No. 8 have exceeded the limits. while the calcium concentration was between 6 - 306 mg/L and the water sample No. 7 exceeded the limit, the concentration of magnesium ranged between 2 - 55 mg/L, As for the concentration of sodium, it was between 4 - 183 mg/L, and potassium was between 6 - 39 mg/L, while the concentration of chloride was between 10 - 344 mg/l where the water sample No. (8, 9) exceeded the permissible level according to specifications, and concentration values Bicarbonate ranged between 33 - 122 mg/L.

Groundwater, Drinking Water Quality, Murzuq Basin, Physiochemical Properties

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