The quality of groundwater has been assessed for its suitability for drinking and human used, at Shebna region (a region of Benghazi city), during April to May 2013. The evaluation was made to ascertain compliance with recommended standards by Libyan Standard Legislation, by caring out the physical, chemical and the microbiological analysis of 20 samples. Physical and chemical parameters including total dissolved solids (TDS), electrical conductivity (EC), cationic and anionic constituents (chloride; sulphate; nitrate; calcium; magnesium were determined by standard titrimetric and spectrophotometric methods. In addition, heavy metals (Chromium, copper, iron and zinc) were also determined using the atomic absorption spectrophotometric method. Flame photometer was used to determine the concentration of sodium and potassium. The results showed that the temperature reaches 20-24.5 C, pH ranges 7.29-8.20, EC 2510-6940 μs/cm, TDS 1147-5264 ppm, chloride 400- 2960 ppm, total alkalinity 176-400 ppm, total hardness 80.1-1045 ppm, nitrate 0.42-3.89 ppm (only one sample has 66.9 ppm nitrate level), sulphate 78.5-342 ppm, sodium and potassium ions range from 95.1-709 ppm and 2.43-46.0 ppm respectively. The levels of pH, nitrate, sulphate and potassium of the samples were within the guidelines set by Libyan Standard Legislation. However, the levels of hardness, total dissolved solid, sodium and chloride, of the most samples were higher than the guidelines set by Libyan Standard Legislation.The results of the chemical toxic analysis of Shebna groundwater, indicated the heavy metals (chromium; copper; zinc and iron) are absence. As for the Bacteriological pollution, the study showed a rising in Total Count and Total Count coliform of Shebna groundwater. However, the Fecal Count Coliform and the Eschriechia coli were determined in 40% of the groundwater samples.
