scholarly journals POTENTIAL HEALTH IMPACT OF DRINKING WATER SOURCES: CASE STUDY FROM SERBIA

2021 ◽  
pp. 011
Author(s):  
Vesna Lazarević ◽  
Miodrag Đorđević ◽  
Nataša Đorđević ◽  
Nikola Igić ◽  
Ana Stojković ◽  
...  
Keyword(s):  
Drinking Water ◽  
Water Supply ◽  
Potassium Permanganate ◽  
Membrane Filtration ◽  
Organic Matter Content ◽  
Matter Content ◽  
Water Supply Systems ◽  
High Concentration ◽  
Potential Health ◽  
Supply Systems

Drinking water quality has a direct impact on the health of the population and is the main indicator of environmental sanitation and hygienic living conditions. The aim of this study was to investigate the quality of drinking water from three water supply systems in Serbia.The retrospective descriptive study was done covering the period between 2011 and 2015. We collected data from control water supply systems in three towns and tested the samples as required by the Regulation on the Hygienic Acceptability of Potable Water. The following indicators of water security were analyzed: ammonia, nitrates, nitrites, consumption of potassium permanganate, organic matter content, pH and electroconductivity. The microbiological quality was determined by analyzing the indicators of fecal contamination, Escherichia coli, Enterococci and Salmonellae, using the membrane filtration method.The most frequent parameters of physical-chemical insecurity of water were a high concentration of ammonia, lower pH levels, and increased consumption of potassium permanganate. The most common detected microbes were aerobic mesophilic bacteria which are not significant from the aspect of human health.These results showed that drinking water could pose a potential risk to local consumers. 

Factors Influencing Formation of Trihalomethanes in Drinking Water: Results from Multivariate Statistical Investigation of the Ontario Drinking Water Surveillance Program Database

2008 ◽  
Vol 43 (2-3) ◽  
pp. 189-199 ◽  
Author(s):  
Shakhawat Chowdhury ◽  
Pascale Champagne ◽  
P. James McLellan
Keyword(s):  
Drinking Water ◽  
Water Supply ◽  
Water Quality Management ◽  
Human Health Risk ◽  
Residual Chlorine ◽  
Surveillance Program ◽  
Water Supply Systems ◽  
Multivariate Statistical ◽  
Potential Health ◽  
Supply Systems

Abstract The presence of trihalomethanes (THMs) in drinking water is an important issue in the context of their potential health effects. Numerous studies have developed models in the past three decades relating THMs concentrations to different factors (e.g., dissolved organic carbon [DOC], chlorine dose, pH, etc.). Previous studies characterized the importance of specific factors through controlled studies using synthetic water or source waters from a small number of water treatment plants. Few studies have reported looking for factors related to THMs formation system-wide across many different water supply systems, and in environments where many factors vary simultaneously. This study presents the results of a multivariate statistical analysis for 162 water supply systems in Ontario, Canada for 2000 to 2004. Principal component analysis (PCA) was applied to determine important factors and possible clusters of variation. PCA identified DOC, chlorine dose, pH, temperature, and reaction time as significant factors for THMs formation. Separate clusters were observed for DOC-colour; chlorine dose-total/free residual chlorine; and hardness-alkalinity. Each cluster indicated factors varying together and representing significant variation. Temperature and pH were found significant and uncorrelated throughout the analysis. The multivariate analysis is the first phase of a continuing investigation into THMs formation with the ultimate goal of developing a predictive model, which can be used to perform human health risk-cost balance studies for drinking water quality management.

Methodological Approaches to Organization of Drinking Water Quality Monitoring Programs

2020 ◽  
pp. 4-8
Author(s):  
Yu.A. Novikova ◽  
I.O. Myasnikov ◽  
A.A. Kovshov ◽  
N.A. Tikhonova ◽  
N.S. Bashketova
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Water Supply ◽  
Cold Water ◽  
Water Quality Monitoring ◽  
Drinking Water Quality ◽  
Quality Monitoring ◽  
Water Supply Systems ◽  
Monitoring Programs ◽  
Supply Systems

Summary. Introduction: Drinking water is one of the most important environmental factors sustaining life and determining human health. The goal of the Russian Federal Clean Water Project is to improve drinking water quality through upgrading of water treatment and supply systems using advanced technologies, including those developed by the military-industrial complex. The most informative and reliable sources of information for assessing drinking water quality are the results of systematic laboratory testing obtained within the framework of socio-hygienic monitoring (SGM) and production control carried out by water supply organizations. The objective of our study was to formulate approaches to organizing quality monitoring programs for centralized cold water supply systems. Materials and methods: We reviewed programs and results of drinking water quality laboratory tests performed by Rospotrebnadzor bodies and institutions within the framework of SGM in 2017–2018. Results: We established that drinking water quality monitoring in the constituent entities of the Russian Federation differs significantly in the number of monitoring points (566 in the Krasnoyarsk Krai vs 10 in Sevastopol) and measured indicators, especially sanitary and chemical ones (53 inorganic and organic substances in the Kemerovo Region vs one indicator in the Amur Region). Discussion: For a more complete and objective assessment of drinking water quality in centralized cold water supply systems, monitoring points should be organized at all stages of water supply with account for the coverage of the maximum number of people supplied with water from a particular network. Thus, the number of points in the distribution network should depend, inter alia, on the size of population served. In urban settlements with up to 10,000 inhabitants, for example, at least 4 points should be organized while in the cities with more than 3,000,000 inhabitants at least 80 points are necessary. We developed minimum mandatory lists of indicators and approaches to selecting priority indices to be monitored at all stages of drinking water supply.

scholarly journals Microbial diversity in full-scale water supply systems through sequencing technology: a review

RSC Advances ◽  
2021 ◽  
Vol 11 (41) ◽  
pp. 25484-25496
Author(s):  
Wei Zhou ◽  
Weiying Li ◽  
Jiping Chen ◽  
Yu Zhou ◽  
Zhongqing Wei ◽  
...  
Keyword(s):  
Drinking Water ◽  
Water Supply ◽  
Microbial Diversity ◽  
Full Scale ◽  
Water Supply Systems ◽  
Sequencing Technology ◽  
Supply Systems

Drinking water microbial diversity influence in full-scale water supply systems.

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.

scholarly journals Modeling chloramine decay in full‐scale drinking water supply systems

2019 ◽  
Vol 91 (5) ◽  
pp. 441-454
Author(s):  
Henry Ricca ◽  
Vasanthadevi Aravinthan ◽  
Gnanamanikam Mahinthakumar
Keyword(s):  
Drinking Water ◽  
Water Supply ◽  
Full Scale ◽  
Drinking Water Supply ◽  
Water Supply Systems ◽  
Supply Systems
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