Health risk assessment of children's population on the delivery of metals with drinking water

In the work, we assessed the carcinogenic risk to the health of the child population when drinking tap water is consumed in the city based on the calculation of the risk to public health taking into account regional exposure factors. For this, a retrospective study of the quality indicators of drinking water in the city of Kazan at the final consumption point (houses and apartments) in the city was carried out. The calculation results showed that when using regional exposure factors that reflect the specific characteristics of the studied population, the carcinogenic risk values increase by 45%. The use of regional values of exposure factors, which are characteristic of a particular population, increases the accuracy and reliability of risk assessment. It was shown that the carcinogenic risk to health from drinking tap water by children 3-6 years old calculated by regional values of exposure factors in a number of zones exceeds the value recommended by WHO by more than 2 times, which requires the use of effective methods of purification of drinking water from ions that are carcinogenic potential.