As for water pollution with agricultural fertilizers, whether nitrogenous, phosphates or potash, which are increasingly used due to the limited arable soil, and the trend towards expansion in intensive agriculture to increase the agricultural productivity of food with the steady growth of the population. For example, water pollution arises from agricultural fertilizers if they are used in an uncalculated way, which leads to an excess of the plant’s need, so it dissolves in irrigation water that is disposed of in drains, or accumulates over time to reach the groundwater in which the proportion of nitrates and phosphates compounds is high. Rain plays a role in carrying the remainder of it into the soil and transporting it to adjacent waterways.