scholarly journals The protection of water bodies and drinking water supply in Uzbekistan

2018 ◽  
Vol 1 ◽  
pp. 9-13
Author(s):  
Usmanov I.A. ◽  
KHasanova M.I.
Keyword(s):  
Drinking Water ◽  
Water Supply ◽  
Water Use ◽  
Anthropogenic Impact ◽  
Scientific Research ◽  
Water Bodies ◽  
Water Supply Systems ◽  
The Republic ◽  
Supply Systems

The following article describes the results of scientific research carried out during the period 2015-2017 years, which was devoted to assessing the efficiency of population’s centralized water supply systems, the quality of drinking water and predicting anthropogenic impact on the quality of the Chirchik and Akhangaran rivers’ water. It was realized that the level of supplying drinking water to population and the efficiency of water supply systems do not fully meet the requirements. The quality of drinking water and sources of water supply in some regions do not meet the standard requirements. As a result, the recommendations on modernization, increasing the efficiency of water supply systems and improving drinking water use conditions were developed in the Republic.

Assessment of Implementation Efficiency of the System Approach to Ensuring Safety of Public Drinking and Recreational Water Use on the Example of the Voronezh Region

2021 ◽  
pp. 7-14
Author(s):  
AYu Popova ◽  
SV Kuzmin ◽  
II Mehantyev
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Water Supply ◽  
Water Use ◽  
System Approach ◽  
Tap Water ◽  
Water Supply Systems ◽  
Recreational Water ◽  
Supply Systems

Background. Implementation of the Federal Clean Water Project within the National Housing and Urban Environment Project was based on the results of numerous health studies conducted within the framework of functioning of the interdepartmental system of public health monitoring and introduction of the risk-based approach into sanitary and epidemiological surveillance. In this regard, there was a need to develop a comprehensive approach to securing safety of drinking and recreational water use and assessing efficiency of implemented solutions. Objective. To assess efficiency of implementation of a system approach to ensuring safety of public drinking and recreational water use on the example of the Voronezh Region. Materials and methods. The study included laboratory testing of water quality in places of recreational water usage, drinking water quality assessment followed by a health risk assessment, a comprehensive evaluation of the extent of sanitary and epidemiological problems in drinking water supply systems, an online questionnaire-based survey of regional residents on tap water quality, a correlation analysis to establish the relationship between population health and water quality, and experimental studies to assess migration of organic compounds from polymer containers into bottled drinking water. Results. Challenges of recreational water use are associated with poor quality of surface water in terms of chemical (ammonium ion, nitrates, phosphates, and biochemical oxygen demand) and microbiological water quality parameters. Priority indices of drinking water quality in centralized water supply systems include the contents of nitrates, fluorine, boron, and iron, which are unacceptable in terms of non-carcinogenic risk (HQ > 1). In disadvantaged areas, water quality in centralized drinking water supply systems is considered “extremely poor”. The online survey demonstrated that the majority of the population (30.7 %) prefers to use water filter jugs to treat tap water. We observed significant correlations between the quality of tap and surface waters and disease incidence rates in the population. We also obtained new data on migration of organic compounds from polymer containers intended for drinking water storage and bottling in case of storage temperature excursions. Conclusion. Our findings served as the basis for the proposed algorithm of implementing a system approach to securing safety of recreational and drinking water use and for evaluating the effectiveness of implemented solutions.

scholarly journals Water contamination events in UK drinking-water supply systems

2008 ◽  
Vol 6 (S1) ◽  
pp. 21-26 ◽  
Author(s):  
John Gray
Keyword(s):  
Drinking Water ◽  
Water Supply ◽  
Water Supply Systems ◽  
Water Company ◽  
Health Authorities ◽  
The Uk ◽  
Contamination Events ◽  
Supply Systems

Water supply companies in the UK have a duty under prime UK legislation to notify the Drinking Water Inspectorate of events affecting or potentially affecting the quality of drinking-water supplies. Under the same legislation, the Inspectorate has a duty to investigate each event. After assessing all of the information available, including companies' reports, the Inspectorate advises on the way in which the event was handled and whether any statutory requirements were contravened. If appropriate, a prosecution of the water company may be initiated. Copies of the assessment are sent to the water company, relevant local and health authorities, Ofwat (the economic regulator), the regional Consumer Council for Water and any other interested parties, including consumers who request it. Generic guidance may be issued to the industry on matters of wider concern. This paper considers the role of the Inspectorate, the powers available to it and reporting arrangements. An overview is presented of events that occurred between 1990 and 2005 and common features are identified. Causes of different types of event are discussed. The importance of well-established contacts between the various interested parties involved in protecting public health is emphasised through discussion of example incidents.

A New Technology to Prevent the Formation of Limescale in Hot Water Supply Systems

2020 ◽  
Vol 841 ◽  
pp. 36-40
Author(s):  
Mardan Jalilov ◽  
Ayten Jalilova ◽  
Gulnar Feyziyeva ◽  
Makhanim Azimova
Keyword(s):  
Drinking Water ◽  
Water Supply ◽  
Hot Water ◽  
Water Supply Systems ◽  
Water Requirements ◽  
Quality Of Water ◽  
Hot Water Supply ◽  
Calcium And Magnesium ◽  
Supply Systems

Given that the quality of water supplied to hot water supply systems must meet drinking water requirements, it is also important that the water preparation process is of great importance. The quality of that water is also important in terms of preventing the formation of heat in hot water systems. It is known that the main cause of the formation of water is the presence of calcium and magnesium cations and bicarbonate and sulfate anions in water. The traditional methods for preventing the limescale include the combination of calcium and magnesium cations from the water and replacing them with cations that are not easy to resolve at high temperatures. The quality of water treated by these methods does not meet drinking water requirements. Taking these into account, the Cl-anionizationprocess of drinking water has been developed in high-tech anionite technology. According to this technology, the first water from the city water gridis processed through anionite and activated carbon filters, which are mechanically charged with high anionite. The treated water is then cleaned out of microbes and bacteria through the ultraviolet disinfection equipment and delivered to the operator according to the quality requirements for drinking water. In the chlorine-anionization process, most of the sulfate and bicarbonate anions in water change to chlorine anions and their solidity remains constant. Thus, the density of the limescale-forming anions in the water decreases sharply and it meets the quality indicators of drinking water. High-grade anionite in the filter (8÷12) is regenerated by NaCl solution. The filtration rate of the solution from the anionite is determined depending on the concentration of calcium cations contained in the salt given for regeneration. Regeneration mode is such that the CaCO3 combination does not crumble when the anionite layer is formed. It is known that the temperature of the heated water in the hot water supply system does not exceed (60÷70)°C. In this case, the decomposition of limescale at Hc<2 mg-eq/l (carbonate hardness) is not observed. As carbonate hardness increases to 4 mg/l, the thin layer in the system shows a collapse. The basic element of the proposed technological schemeCl-anionite filter was applied at ADA University in Baku and positive results were obtained. Early observed collapse of pipes has been prevented and the working regime of hot water heaters has improved. A high-performance anionite such as A200EMBCl, which is a major ingredient of the UK's Purelite, and then the Russian-made AB-17-8 high-anionite anions have been used on the device.

scholarly journals Analyzing health risks caused by contaminated drinking water (experience gained in Samara region)

2021 ◽  
pp. 41-51
Author(s):  
O.V. Sazonova Sazonova ◽  
◽  
A.K. Sergeev ◽  
L.V. Chupakhina ◽  
T.K. Ryazanova ◽  
...  
Keyword(s):  
Drinking Water ◽  
Water Supply ◽  
Health Risks ◽  
Hazard Quotient ◽  
Actual Data ◽  
Controlled Study ◽  
Water Supply Systems ◽  
Contaminated Drinking Water ◽  
Supply Systems

Environmental contamination is still a pressing issue, in particular, contaminated drinking water sources and contaminated drinking water from centralized communal water supply systems, since it produces negative effects on human health. Our research goal was to estimate probable impacts exerted on overall morbidity in Samara by quality of drinking water taken from centralized communal water supply systems as a most significant environmental factor. Our research tasks included taking and analyzing drinking water samples from centralized communal water supply systems; calculating carcinogenic and non-carcinogenic health risks caused by analyzed chemicals. To fulfill the tasks and achieve the goals, in 2018–2019 we performed sanitary-chemical analysis of drinking water quality as per 20 sanitary-chemical parameters; our research object was drinking water taken from centralized communal water supply systems in 7 districts in Samara. Obtained actual data on contamination of water taken from centralized water supply networks in Samara were used as primary basis for calculating hazard indexes and carcinogenic risk coefficients using conventional exposure scenarios. In our research we revealed that maximum total non-carcinogenic hazard quotient was determined by arsenic and petroleum products introduction. Assessment of carcinogenic risks caused by contaminants in drinking water revealed that total health risk for children younger than 18 was within the second range as per its median; total carcinogenic risks for adults, within the third range. At the same time, arsenic contents did not exceed hygienic standards in all examined samples. So, we assessed carcinogenic and non-carcinogenic risks, basing on actual data on quality of drinking water taken from centralized communal water supply systems. It seems vital to perform a wider-scale controlled study in several regions in order to assess significance of revealed factors for morbidity among population.

scholarly journals About the question of the assessment of the drinking water quality in centralized water systems in the current conditions

2020 ◽  
Vol 99 (6) ◽  
pp. 563-568
Author(s):  
Yuliya A. Novikova ◽  
K. B. Friedman ◽  
V. N. Fedorov ◽  
A. A. Kovshov ◽  
N. A. Tikhonova ◽  
...  
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Water Supply ◽  
Supply System ◽  
Drinking Water Quality ◽  
Water Supply Systems ◽  
High Quality ◽  
Supply Systems ◽  
The City

Introduction. Regulation of drinking water quality is a very important area of health care and improving the quality of life of the population of the Russian Federation.The aim of this work is the development a model for the assessment of the drinking water quality and calculating the share of the population, including urban, provided with high-quality drinking water from centralized water supply systems, taking into account new methodological approaches to the evaluation of the quality of drinking water using the example of water supply to settlements in the Leningrad Region. Material and methods. The data on the organization of centralized cold water supply systems and monitoring systems for drinking water quality and the results of laboratory studies of drinking water quality in the cities of Volkhov, Svetogorsk, Slantsy, Tosno were studied. Statistical processing of the results was performed, the categories of quality of drinking water supplied to the population were determined, the number of the population provided with high-quality drinking water from the water supply system was calculated in accordance with Guidelines 2.1.4.0143-19.Results. In 2018, 100% of the population was provided with quality drinking water only in the city of Slantsy. In the city of Tosno, this index reached of 83.5%. In the cities of Volkhov and Svetogorsk, drinking water was rated as low-quality. But it is worth noting that in the cities of Volkhov and Slantsy laboratory tests were carried out at 2 points, in the city of Svetogorsk - only at the 1 point, which, given the number of residents, is not enough. For an objective assessment of the state of drinking water and the development of measures aimed at improving its quality, it is necessary to increase the number of monitoring points, as well as to include the results of control and supervision measures and production laboratory control conducted by water supply organizations in the volume of laboratory information.Conclusion. The proposed model allows us to assess the drinking water quality in centralized water supply systems and the proportion of the population, including urban, provided with quality drinking water at the level of the water supply system, settlement, municipal district (urban district), subject of the Russian Federation

scholarly journals Assessment of the Sverdlovsk Oblast Drinking Water Pollution with Heavy Metal

2020 ◽  
Author(s):  
Keyword(s):  
Water Pollution ◽  
Heavy Metals ◽  
Drinking Water ◽  
Water Supply ◽  
Water Samples ◽  
Water Supply Systems ◽  
Industrial Enterprises ◽  
Quality Of Water ◽  
Supply Systems

The paper presents the results of the determination of heavy metals in drinking water samples from centralized water supply systems and wells of individual water supply of the Sverdlovsk region. It was found that the content of copper ions in the samples does not exceed its maximum permissible concentration, and the content of lead and cadmium ions in most samples is higher than the permissible norms. It is established that water samples from Nizhny Tagil and Serov are more contaminated with cadmium. The causes of drinking water pollution are discussed. It was found that the pollution of water from the centralized water supply systems with heavy metals is mainly due to the non-compliance of the operated water pipes with sanitary and hygienic requirements. Groundwater pollution is caused by the infiltration of industrial effluents containing heavy metals from storage and sedimentation tanks through soil. It is shown that numerous industrial enterprises in the Sverdlovsk region aggravate the process of pollution of surface and groundwater with heavy metals. The unsatisfactory quality of water in terms of the content of heavy metals in Sverdlovsk region is revealed. The authors dwell on the need to continue research to determine the content of other heavy metals in water and expand the geography of sampling in the region in order to assess more accurately the quality of water.

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

2021 ◽  
pp. 35-42
Author(s):  
VV Vasilyev ◽  
TV Ryabinina ◽  
MV Perekusihin ◽  
EV Vasilev
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Water Supply ◽  
Tap Water ◽  
Water Supply Systems ◽  
Clean Water ◽  
Safe Drinking Water ◽  
Water Project ◽  
Supply Systems

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.

Algorithm of the system approach to ensure the hygienic safety of drinking and recreational water use of the population and assessment of the efficiency of its implementation in the territory of the Voronezh region

2021 ◽  
pp. 24-37
Author(s):  
Igor Ivanovich Mekhantiev ◽  
Larisa Alekseevna Masaylova ◽  
Oleg Vladimirovich Klepikov ◽  
Semen Aleksandrovich Kurolap
Keyword(s):  
Drinking Water ◽  
Water Use ◽  
Rural Areas ◽  
Legal Framework ◽  
Water Supply Systems ◽  
Recreational Water ◽  
Voronezh Region ◽  
Complex Indicators ◽  
Supply Systems

The aim of the study was to scientifically substantiate a system of measures to ensure the hygienic safety of drinking and recreational water use of the rural population of an agrarian-developed region (on the example of the Voronezh region) on the basis of previously conducted studies that made it possible to assess: sanitary and hygienic problems in the recreational water use of the population; health risks associated with water factors; the degree of sanitary and epidemiological problems of centralized drinking water supply systems in rural areas; health hazards associated with drinking bottled drinking water. The following are proposed: 1) an algorithm for the implementation of a systematic approach to ensuring the hygienic safety of recreational and drinking water use of the population, which provides for the assessment of individual and complex indicators for the blocks “Recreational water use”, “Household drinking water use”, “Packaged drinking water”, “Public health”; simultaneous solution of analytical tasks to substantiate priority regional indicators of water quality, identify areas of “risk” and links that determine the inadequate quality of drinking water, clarify population risks due to an increase in the share of consumption of packaged drinking water; 2) operational management of the regional situation in order to ensure hygienic safety in the field of drinking and recreational water use of the population through improving the legal framework, implementing targeted programs and informing the population.

scholarly journals On the evaluation of results and economic efficiency of control-supervisory activity of the Federal Service on Customers Rights Protection and Human Well-being Surveillance in the field of water supply

2020 ◽  
Vol 99 (11) ◽  
pp. 1188-1195
Author(s):  
Nina V. Zaitseva ◽  
Svetlana V. Kleyn ◽  
Svetlana A. Vekovshinina ◽  
Aleksandr S. Sboev ◽  
Mikhail Yu. Tsinker
Keyword(s):  
Drinking Water ◽  
Water Supply ◽  
Economic Efficiency ◽  
Morbidity And Mortality ◽  
Water Supply Systems ◽  
New Model ◽  
Rights Protection ◽  
Consumer Rights ◽  
Supply Systems

Introduction. The availability of the quality and safety of drinking water is essential for human life and health. The Russian Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeing (Rospotrebnadzor) and other participants of the federal project ‘Clean Water’ assigned the task of providing 90.8% of the Russian population Federation with high-quality drinking water from centralized water supply systems until 2024. Currently, Rospotrebnadzor has switched to a new model of risk-based control and supervision, which determined the study’s purpose: to evaluate the effectiveness and economic efficiency of the new model of the service in the field of centralized drinking water supply. At present, Rospotrebnadzor has switched to a new model of risk-based control and supervision. The purpose of the study. To evaluate the results and cost-effectiveness of the new model of the service in the field of centralized drinking water supply. Material and methods. The study used indices of the control and supervisory activity of Rospotrebnadzor, indicators of drinking water quality of centralized water supply systems, data on morbidity and mortality of the population of the Russian Federation for 2014-2019. The results were estimated by the proportion of samples of drinking water from centralized water supply systems with excess hygienic standards prevented by the actions of the Federal Service for Supervision of Consumer Rights Protection and Human Welfare, as well as controlled cases of morbidity and mortality. The economic efficiency assessment was based on a comparison of the costs of implementing the activities of Rospotrebnadzor and financial losses prevention as a result of a decrease in morbidity and mortality Results. An assessment of the results of the Rospotrebnadzor activity showed the occurrence of more than 36.75% of samples in 2019 that did not meet sanitary requirements for sanitary and chemical indices was prevented (1.8-2.0 times more than in 2014-2015), and 1.51% for microbiological (1.6 times more than in 2014). As a result of the activities of the Rospotrebnadzor, 249 deaths and 185,097 thousand cases of diseases of the population associated with the quality of drinking water were more prevented if compared with the pre-reform period. The economic efficiency of the service’s activities to improve the quality of drinking water of centralized water supply systems increased by 28.8% and amounted to 67.7 rubles in 2019. Conclusions. The introduction of a risk-based model in the control-supervision activities of Rospotrebnadzor led to a decrease in the likelihood of violations of sanitary requirements for the drinking water quality from centralized water supply systems and an increase in the number of prevented deaths and diseases of the population associated with the quality of drinking water. The economic efficiency of the service to improve the quality of drinking water from centralized water supply systems has increased.

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