The pollutional potential of the runoff from manured soil involves nitrate, sodium, and potassium. High manure applications to cultivated soils will cause limited pollution of surface runoff water and only during the first 15 minutes of the first runoff event. The concentration of pollutants in this runoff water is below the limits set for irrigaton water. Hence, all runoff should be recycled for irrigation uses. After four years of testing heavy manure application, groundwater retained potable quality. Repeated annual application of heavy rates of manure on land may lead to deterioration of the physical properties of soil, owing to the large amounts of sodium and potassium in manure. The basic intake rate on any specific manure loaded area increases with time elapsed from date of manure application.