Quality of Drinking Water and Epidemic Risk of Water-Born Infections in Towns of the Arkhangelsk Region

Baydakova, E.V.; Валерьевна, Байдакова Елена; Unguryanu, T. N.; Николаевна, Унгуряну Татьяна; Krutskaya, K V; Валерьевна, Крутская Ксения; Миненко, И. А.; Анатольевна, Миненко Инесса

doi:10.33396/1728-0869-2019-5-15-20

Cited by 4 publications

(1 citation statement)

References 7 publications

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“…В повышенных концентрациях марганец оказывает негативное воздействие на нервную систему [12], а фтор приводит к флюорозу зубов и деформирующему остеоартрозу [13], нарушениям нервно-психического развития [14]. Негативное влияние на состояние подземных и поверхностных вод может оказывать антропогенное воздействие, в результате которого возникает превышение в питьевой воде содержания ряда химических веществ, в том числе нитратов [15], а также происходит микробиологическое загрязнение [16][17][18]. Обеззараживание питьевой воды хлором приводит к образованию в ней более 600 потенциально вредных побочных продуктов дезинфекции [19], многие из которых обладают цитотоксичными, генотоксичными, канцерогенными и мутагенными эффектами.…”

Section: коммунальная гигиенаunclassified

Provision of Safe Drinking Water to the Local Population within the Clean Water Project Implemented in the Penza Region

Vasilyev¹,

Ryabinina²,

Perekusihin³

et al. 2021

PH&LE

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Introduction: Drinking water from centralized drinking water supply systems is not always safe due to its natural pollution with various chemicals and microbiological contamination occurring in the distribution system. In this regard, the role of the service exercising governmental water quality surveillance is growing. The purpose of the study was to assess the quality of drinking water and the associated health risk and to substantiate priority measures aimed at improving the quality of water in the centralized water supply systems of the region. Materials and methods: We examined the results of drinking water quality testing performed within the implementation of sanitary and epidemiological surveillance and socio-hygienic monitoring and incidence rates in morbidity of population in 27 districts of the Penza Region and the regional center for the years 2014–2019. Health risks from oral exposures to waterborne chemicals were assessed in accordance with Guidelines R 2.1.10.1920–04. The statistical relationship was studied by the correlation method. Results: We established that water quality in the centralized water supply systems fed by underground sources is determined by the chemical composition of the exploited aquifers that divide the territory of the Penza Region into four zones. The worst water quality was observed in the fourth zone where concentrations of natural iron, fluorides and boron in tap water were many times higher than their maximum permissible levels and the hazard quotient for fluorides exceeded the limit value (HQ = 2.845 for children and 1.219 for adults). In the third zone, iron posed the highest risks of diseases of mucosa and skin (HI = 0.296), the immune system (HI = 0.311), and hematopoietic system (H = 0.473) in children; we also established a strong correlation between the average annual concentration of iron in tap water and the incidence of genitourinary disorders, gastritis and duodenitis in the child population. Although the share of the population supplied with safe drinking water from centralized water supply systems increased from 86.5 % in 2014 to 89.4 % in 2019, the target set within the Regional Clean Water Project for 2019 was not achieved. Conclusion: The study results were taken into account when making additions to the Regional Clean Water Project in 2020 envisaging construction of iron removal plants and water well drilling in areas with low fluorine levels.

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Section: коммунальная гигиенаunclassified

Provision of Safe Drinking Water to the Local Population within the Clean Water Project Implemented in the Penza Region

Vasilyev¹,

Ryabinina²,

Perekusihin³

et al. 2021

PH&LE

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Effects of the Wear of the Water Supply Network on the Epidemiological Safety of Drinking Water in Small Towns in the Ryazan Region

Solov'yev

Дементьев

Lyapkalo

et al. 2022

I.P. Pavlov Russian Medical Biological Herald

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INTRODUCTION: The sanitary and epidemiological reliability (SER) of a centralized drinking water supply system (CDWSS) is one of the determining factors of the quality of drinking water, and it is assessed by a special methodology developed by Erisman Federal Scientific Center for Hygiene. AIM: To conduct a comprehensive hygienic assessment of SER considering microbiological parameters of drinking water quality. MATERIALS AND METHODS: The study was conducted jointly with the Center for Hygiene and Epidemiology of the Ryazan region (RR) in six district centers of the RR supplied with water from different aquifers. Water samples were taken according to the standard method of Methodological Guidelines (MUK) 4.2.1018-01. Microbiological parameters of drinking water quality were determined in the selected water samples in accordance with the Sanitary Norms and Regulations (SanPiN) 1.2.3685-21. Statistical analysis was performed using Microsoft Excel 2019 and IBM SPSS Statistics 19. RESULTS: The recorded levels of generalized complex parameter SER of CDWSS were as follows: Skopin, 1.6 points (the most unfavorable situation); Mikhailov, 1.3 points; Ryazhsk, 1.1 points; Kasimov, 0.4 points; and Korablino and Sasovo, 0.3 points each (the least unfavorable situation). In Skopin, Ryazhsk, and Mikhailov, a strong correlation was found between the increased content of the microbiological parameters and the incidence of dysentery and acute intestinal infections of viral etiology in the adolescent population. CONCLUSION: The lowest levels of SER of the CDWSS were recorded in Skopin, Mikhailov, and Ryazhsk. A direct correlation of high strength was found between the exceedance of the permissible values of the microbiological parameters of drinking water and the incidence of dysentery and intestinal infections of viral etiology among adolescents in these towns.

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Comparative Characteristics of Quality Parameters of Waters of the Oka River in Places of Water Intake of Utility and Drinking Water System in Ryazan

Litvinova

Дементьев

Lyapkalo

et al. 2022

I.P. Pavlov Russian Medical Biological Herald

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INTRODUCTION: Surface water sources play an important role in supply of large cities with water. Their waters are subject to anthropogenic pollution with different chemical compounds which may be significant risk factors for the health of the population. The article presents the results of comparative sanitary-hygienic characteristics of the water quality of the Oka river in places of water intake of utility and drinking water supply system of Ryazan. Being the only surface source of water supply, the Oka river provides 53% of the total water consumption of the Ryazan population, therefore a rational choice of the place of water intake can have a considerable impact on the effectiveness of water conditioning and purification and on the final quality of drinking water. AIM: To give a comparative sanitary-hygienic characteristic of the water quality of the Oka river in places of the water intake of the utility and drinking water supply system of Ryazan. MATERIALS AND METHODS: A comparative evaluation of the water quality of the Oka river, as a surface source of water supply, was carried out based on the average long-term values of control parameters (organoleptic, microbiological, chemical) and the proportion of samples that do not meet hygienic standards in the sections of three water intakes in Ryazan in 20122019. The average parameters were compared by the method of variance analysis; for paired comparisons, Scheffe and Tamhein criteria were used, taking into account the results of Levene test. The statistical parameters were calculated in SPSS Statistics 19 program. RESULTS: The chemical composition of the Oka river water was characterized by the greatest pollution with iron (2+) and aluminum. The water of Oksky and Borkovskoy water intakes was characterized by higher average concentrations of iron (2+) and ammonia, as well as greater contamination with generalized and thermotolerant coliform bacteria, compared with the water of Sokolovsky water intake. CONCLUSION: A lower initial quality of the water in Oksky and Borkovskoy water intakes may be due to their location in the 'blind' river course characterized by the processes of eutrophication and slowed down water exchange. High concentrations of iron (2+) may be associated with supply of stream water from the underground sources or with anthropogenic pollution.

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Quality of Drinking Water and Epidemic Risk of Water-Born Infections in Towns of the Arkhangelsk Region

Cited by 4 publications

References 7 publications

Provision of Safe Drinking Water to the Local Population within the Clean Water Project Implemented in the Penza Region

Provision of Safe Drinking Water to the Local Population within the Clean Water Project Implemented in the Penza Region

Effects of the Wear of the Water Supply Network on the Epidemiological Safety of Drinking Water in Small Towns in the Ryazan Region

Comparative Characteristics of Quality Parameters of Waters of the Oka River in Places of Water Intake of Utility and Drinking Water System in Ryazan

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