According to the chemical pollution danger in general and its danger on groundwater wells in agricultural areas particularly the inhabited ones , the scientific study was implemented to determine the concentrations of some ions in water wells within the area of Hraesoon; In addition to, monitoring their changing values which indicate the rate of chemical pollution in the study area due to existing activities. The search involves a monthly periodic physical and chemical analyzes in the invested wells in Hraesoon area , Banias city for a whole year. starting from September 2011 till August 2012 by choosing ten invested wells disterbuted in the area. The study includes the changing of temperature ,pH, electrical conductivity, and the group of negative ions (nitrate NO3 -, phosphate PO4 3-, sulphates SO4 2-, chloride Cl-) in addition to positive ions (ammonium NH4 +, Sodium Na +). The values of the studied ions have demonstrated a clear disparity in each month for the samples taken from the same wells, due to the agricultural ,human activities and climatic conditions that prevailed during the sampling dates. The recorded results show cases of chemical contamination in the water wells studied not identical the Syrian standard for drinking water (2011-2012) portend a lot of health and environmental risks, especially that many of those wells are used for drinking purposes.