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Hygienic assessment of drinking water quality and risks to public health in Krasnoyarsk region

2016; Federal Scientific Center for Medical and Preventive Health Risk Management Technologies; Issue: 3 Linguagem: Inglês

10.21668/health.risk/2016.3.04.eng

2308-1163

D.V. Goryaev, И. В. Тихонова, N.N. Torotenkova,

Therapeutic Uses of Natural Elements

The article deals with hygienic assessment of water sources quality for the centralized drinking water supply for residential use in Krasnoyarsk region.The authors have detected violation of hygienic standards, as per such parameters as iron (iron content at the level of 1.8 mg/dm3 or 6MPC has been fixed); fluorine (up to 6MPC); ammonia and ammonium nitrogen (up to 2MPC), nitrates (up to 5MPC); organochlorine compounds (chloroform, carbon tetrachloride -up to 5MPC), manganese (up to 5.5MPC), aluminum (up to 2MPC).Such carcinogenic impurities, as benz(a)pyrene, cadmium, arsenic, nickel and lead were detected in water in high concentrations.It's been found that total lifetime carcinogenic health risk for the cities and districts residents in Krasnoyarsk region, due to carcinogenic chemicals ingestion with drinking water, in 22 areas is being assessed as negligible, and doesn't require an additional mitigation measures.In 23 areas carcinogenic risk ranges within 1.0e-6 -1.0e-5, which corresponds to criteria for risk acceptance.In 9 areas (Borodino, Lesosibirsk towns, Yeniseisk, Kazachinskiy, Partisanskiy, Pirovskiy, Rybinskiy, Sayanskiy, Uyarskiy districts) the determined lifetime individual carcinogenic risk level ranges between 1.0e-5 to 2.0e-4, which is inacceptable for the population in general.The content of arsenic in drinking water makes primary contribution to the risk level (80.8 -98.4%).There's a higher risk of developing blood, cardiovascular diseases for the residents of Krasnoturanskiy district (H1=1.2 and H1=1.17, accordingly); bone tissue diseases and odontopathy of the Sukhobuzimskiy area residents (H1=1.04).High danger indexes are due to nitrate and fluoride.Providing the Krasnoyarsk region urban and municipal districts inhabitants with safe drinking water requires a combination of different measures with developing and implementing programs to improve water supply for residential areas.