Abstract
In order to produce water for human consumption, processes must be used that allow the removal of impurities present in the water to be treated. For this, alkalinizing chemicals, coagulants, disinfectants and others are added. Any product used in the treatment of water must promote its potability unconditionally, without the risk of transfer of any contaminant to the treated water. The quality control of these products is based on the performance of laboratory tests, which should not be restricted to the determination of the concentration of the active principle, ie, this monitoring should also include the determination of toxicity parameters present in the process inputs to ensure that the water produced meets the parameters required by the legislation. The problem is that not every sanitation company has dedicated laboratories to perform the amount of testing involved in this monitoring. Therefore, this work proposes a sampling plan for quality control of the chemicals used in water treatment. The main advantage of this statistical tool is the viability of monitoring the toxicity parameters of these products, without the need to increase the cost of this process.
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