This research aims to examine the processing water drainage and used for agriculturalpurposes were used samples of water drainage and mixed with samples of river water at differentratios to get water containing salts proportions few were these samples (drainage and river fromregion Dujaili / Wasit Governorate) In this research ions were examine (Ca, Na, mg) to find astandard indicator of water quality labeled sodium adsorption ratio (SAR) as well as examine (EC,PH) was the tests in the laboratory of the College of Agriculture / University of Wasit. And compare the results with the system laboratory salinity U.S. (USSL) system and Food AgricultureOrganization of the United Nations (FAO) . In this study it was found that the proportion mixing(10%drainage + 90%River), (20%drainage + 80%River)is the ratio preferred as well as the more ECincreased salt concentration in the water and the pH values ​​of this water was within normal limits.