This study conducted on 30 sample of ground water, spreaded over most of the Cretaceous formations in the studied area, in order to determine origin and quality of water and evaluate it for the purposes of irrigation and drinking. The study showed that samples taken are not of the same origin, but of the same hydrochemical type of hydrocarbons. Four sets of formed salts also detected. All samples of this study were valid for irrigation water. The samples taken from Bchuna, Al-Matn, Al- Maran, Kafrdabel, Kassaben sites were safe for drinking, the rest of the samples were not because of the increase of calcium ions concentration. The sample of Ain-Kataa site had an increase in concentration of bicarbonate and potassium ions. An exceeded concentration of the limit of these electrolytes values for drinking water according to the Syrian Standard Specificationswas noticed.