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The assessment of non-carcinogenic risk for the population health from chemicals coming from exhaust gases of motor transport citywide and in certain districts of the city of Kazan was performed. The calculation was carried out according to the results of the laboratory and instrumental tests carried out by “Center of Hygiene and Epidemiology in the Republic of Tatarstan” for the period from 2010 to 2016. The general toxic effect on the organs of the respiratory system from 42.5% to 62.0% in the city and districts is the result of exposure to the total fraction of total dust (TSP), particulate matter (РМ)10, and РМ2.5. Population risk of the total TSP impact made 1244 cases of additional deaths per year among the city population, apart from external causes. In Vakhitovsky and Sovetsky districts, this index for the whole population made 86 and 281 per year, respectively. The absence of data on the age-specific death rate in the districts did not allow for calculating the given indices for certain age groups. Damage associated with total morbidity of asthma among the cumulative city population caused by the exposure to РМ10 made 486 cases in adults and 67 cases in children per year. Damage from the exposure to РМ2.5 made 332 additional deaths from all causes (14.6%), 1727 from cardiovascular diseases (4.5%), and 18 from respiratory diseases (6.0%). Currently, the assessment of mortality and diseases caused by the air pollution is the starting point for development or correction of regulatory actions in the field of the environmental and the population health protection at regional level.

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The assessment of non-carcinogenic risk for the population health from chemicals coming with exhaust gases of motor transport citywide and in certain districts of the city of Kazan was performed. The calculation was carried out according to the results of the laboratory and instrumental tests carried out by FBHI “Center of Hygiene and Epidemiology in the Republic of Tatarstan” for the period from 2010 to 2016. Suspended solids (to 28.0%), carbon (soot) (to 24,6%), and nitrogen dioxide (to 19,2%) contribute most to the value of total risk for the population health in the districts. Organs of the respiratory system (HI=11,93; 13,06 and 10,51) are highly vulnerable to the risk of developing unfavorable non-carcinogenic toxic effects on chronical exposure to chemicals coming from atmospheric air in the city and districts due to exposure to TSP, PM2,5 and PM 10 total fracture (from 42,5 to 62,0%). The expected number of additional cases of total mortality associated with chronical exposure to TSP made 1244 cases per year among the whole city population without taking into account the external causes. A monitoring system available in large cities, undercount of the atmospheric air pollutants prevents from correct assessment of the potential risk and actual damage for the population health.

In the article there are given results of the evaluation of non-carcinogenic risks for the health of the child population residing in different areas (districts) of the city of Kazan with the aim of the subsequent comprehensive assessment of the pollutants in drinking water. Assessment of the risk for the human health was performed correspondingly to with the P 2.1.10.1920-04 for oral route of exposure in accordance to the chemical composition of drinking water with account for the standard and regional factors of the exposure. The results of the risk assessment under the consumption of drinking tap water by the child population with localized place of residence permit to reveal areas with a high level of health risk in the city. The screening assessment of carcinogenic risk due to the consumption of chemicals with drinking water revealed differences in regional and standard values of the exposure factors. This affects both on the value of the chronic average daily intake of chemical contaminants in drinking water and the level of risk under the consumption of drinking water by the child population.