Influence of the quality of drinking water supply sources on the formation of the ecologically-dependent pathology of the population of the Republic of Dagestan

Aim. Study of the influence of drinking water quality on the ecologically-dependent morbidity of the population of the Republic of Dagestan.
Material and Methods. Methods of current and retrospective analysis of regional health indicators and methods of mathematical-statistical and medical-geographical analysis were used. Statistical processing of the results was carried out using the STATISTICA and Excel software packages. When carrying out laboratory studies on the quality of drinking water, we used a Lumex atomic absorption spectrometer "MGA-915MD".
Results. Numerous hygiene studies indicate the direct impact of unsatisfactory drinking water quality on the health of a population. The relationship between sanitary and chemical indicators and the incidence rate for a number of nosological forms has been proven. It is generally accepted that human health is influenced by lifestyle factors (working, living and relaxation conditions), heredity and the ecological condition of the area of residence, including the quality of drinking water. Although it is not possible to differentiate the share of the negative effect caused by the consumption of poor quality drinking water but the incidence of certain nosological forms (cancer of the esophagus, gastrointestinal tract and kidney diseases) in the those regions of the Republic of Dagestan under consideration correlates with the characteristics of drinking water.
Conclusion. The problem of pollution of water supply sources for the population in the dynamics of the long-term remains a priority concern. The quality and safety of drinking water are decreasing, which cannot but have a negative impact on public health. Correlation linkages between indicators of drinking water quality and oncological morbidity of the population were also established in indicators below the maximum permissible concentrations, which corresponds to a typical logistic model of causal relationships and serves as evidence of the high dependence of health disorders on chemical contamination of water supply sources.

1. Zakharenkov V.V., Viblaya I.V. Spektr vliyaniya sotsi-al'nykh uslovii na sostoyanie zdorov'ya naseleniya Novokuznetska v 2006-2009 g [The spectrum of influence of social conditions on the health status of the population of Novokuznetsk in 2006-2009]. Kemerovo, Primula Publ., 2010. 112 p. (In Russian)

2. Veselkova N.S., Morozova O.G., Mironov P.V., Pen R.Z., Starodubtseva Zh.A., Ustinovich O.V. O kachestve pit'evoi vody territorii boreal'noi zony lesov Krasnoyarskogo kraya [On the quality of drinking water in the territory of the boreal forest zone of the Krasnoyarsk Territory]. Materialy V Vserossiiskoi konferentsii «Novye dostizheniya v khimii i khimicheskoi tekhnologii rastitel'nogo syr'ya», Barnaul, 2012 [Proceedings in the All-Russian conference "New achievements in the chemistry and chemical technology of plant raw materials", Barnaul, 2012]. Barnaul, 2012, pp. 491-493. (In Russian)

3. Pen R.Z., Morozova O.G., Vcherashnii P.M., Mazharov V.F., Shakhmatov S.A. The quality of drinking water in the eastern zone of the Krasnoyarsk Territory as a predictor of public health. Fundamental research. 2014, no. 12, pp. 258262. (In Russian)

4. Gasangadzhieva A.G., Gabibova P.I., Daudova M.G., Galkina I.V., Giraev K.M., Magomedova Z.Y. Medical-Environmental Assessment and Forecasting of Socially Significant Pathology of the Population of the Republic of Dagestan. South of Russia: ecology, development, 2019, vol. 14, no. 4, pp. 147-164. (In Russian) DOI: 10.18470/1992-1098-2019-4-147-164

5. Abdulmutalimova T.O., Mamasheva G.D. The quality of drinking water as a risk-factor of skin lesions among the North Daghestan population. Medical Bulletin of the South of Russia, 2018, vol. 3, no. 9, pp. 58-64. (In Russian) DOI: 10.21886/2219-8075-2018-9-3-58-64

6. Hramov A.V., Kontrosh L.V., Pankratova M.Y., Vezhen-kova I.V. Hemical composition of drinking water and accumulation of toxic metals in a human body. Human ecology, 2019, no. 6, pp. 11-16. (In Russian) DOI: 10.33396/17280869-2019-6-11-16

7. Abdulmutalimova T.O., Revich B.A. Assessment of the carcinogenic risk to public health due to the high content of arsenic in the drinking artesian water of Northern Dagestan. Hygiene and sanitation, 2017. vol. 96, no. 8, pp. 743746. (In Russian) DOI: 10.18821/0016-9900-2017-96-8-743746

8. Bezgodov I.V., Efimova N.V., Kuz'mina M.K. Assessment of the quality of drinking water and risk for the population's health in rural territories in the Irkutsk region. Gigiena i sanitariya [Hygiene and sanitation]. 2015, vol. 94, no. 2, pp. 15-19. (In Russian)

9. Smith A.H., Steinmaus C.M. Health effects of arsenic and chromium in drinking water: recent human findings. Ann. Rev. Public Health. 2009, vol. 30, pp. 107-122.

10. IARC: A Review of Human Carcinogen: Arsenic, Metals, Fibres, and Dusts. Geneva, Switzerland: World Health Organization, 2012, vol. 100.