Abstract: The present study investigates the chemical composition of wet atmospheric precipitation over Damietta City-Egypt. Precipitation samples were collected through rainy event (October to February) during 2001-2002 and from 2005-2006 in ten sampling locations. The concentrations of the chemical constituents of water-soluble ions Inorganic cations (NH4+) and anions (NO3-, NO2-, SO42-, Cl- and CO32- were measured. Electric conductivity, pH and total dissolved solids of rainwater were also assessed. Results of the present study during 2005-2006 are almost similar to values observed during 2001-2002, excepting the concentration of NH4+ and SO42-. The mean value of the precipitation pH indicates that rainfall is alkaline. Among the cations and anions, SO42- deposition was maximum followed by CO32- and then NO3-, Cl-, NH4+ and NO2-. The results of the present study suggest that atmospheric precipitation is strongly modified due to various human activities, motor vehicles and furniture activities which are scattered all over the city.