Water is essential for the maintenance of life and for industrial processes, it is present in several sectors of the industry. Popularly known as a universal solvent, water has a resource of dissolving substances, of a similar nature, present in it. However, to make efficient use of water, it is necessary to present characteristics such as pH value and duration within a standard range. For both, some cases use some type of treatment for the same use values of their properties. An example of a well-known treatment is the softening filter, which, when associated with other treatment processes, can provide water with the necessary resources for its use. The work in question concerns the analysis of a water treatment process based on the use and the slowest dosage of chemicals in the Mossoró region.