Microbial Quality Of Water Supply In Distribution Systems

Author : Edwin E. Geldreich
Publisher : CRC Press
Page : 516 pages
File Size : 46,5 Mb
Release : 2020-07-26
Category : Technology & Engineering
ISBN : 9781000157550

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Microbial Quality of Water Supply in Distribution Systems by Edwin E. Geldreich Pdf

Hidden problems, buried deep in the pipe networks of water distribution systems, are very serious potential threats to water quality. Microbial Quality of Water Supply in Distribution Systems outlines the processes and issues related to the degradation of water quality upon passage through networks of pipes, storage reservoirs, and standpipes on its way to the consumer. The risks associated with biofilm accumulation, bacteria, and other contaminants are discussed in great detail. In addition to its excellent microbiological coverage of organisms in drinking water and biofilms in distribution systems, Microbial Quality of Water Supply in Distribution Systems provides clear treatments of the technical and public communication issues most commonly affecting the quality of water and water supply systems. The inclusion of numerous case histories in this new book makes it a complete reference source for anyone concerned with water quality and water distribution systems.

Author : Dick van der Kooij,Paul W. J. J. van der Wielen,Diego Rosso,Andrew Shaw,Dietrich Borchardt,Ralf Ibisch,Dirk Apgar,Jay Witherspoon,Dominic M. di Toro,Paul R. Paquin,Don Mavinic,Fred Koch,Emmanuelle Guillot,Jean-Francois Loret,Erhard Hoffmann,Hallvard Ødegaard,Francesc Hernandez-Sancho,Maria Molinos-Senante
Publisher : IWA Publishing
Page : 484 pages
File Size : 48,7 Mb
Release : 2013-09-14
Category : Science
ISBN : 9781780400402

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Microbial Growth in Drinking Water Supplies by Dick van der Kooij,Paul W. J. J. van der Wielen,Diego Rosso,Andrew Shaw,Dietrich Borchardt,Ralf Ibisch,Dirk Apgar,Jay Witherspoon,Dominic M. di Toro,Paul R. Paquin,Don Mavinic,Fred Koch,Emmanuelle Guillot,Jean-Francois Loret,Erhard Hoffmann,Hallvard Ødegaard,Francesc Hernandez-Sancho,Maria Molinos-Senante Pdf

Maintaining the microbial quality in distribution systems and connected installations remains a challenge for the water supply companies all over the world, despite many years of research. This book identifies the main concerns and knowledge gaps related to regrowth and stimulates cooperation in future research. Microbial Growth in Drinking Water Supplies provides an overview of the regrowth issue in different countries and the water quality problems related to regrowth. The book assesses the causes of regrowth in drinking water and the prevention of regrowth by water treatment and distribution. Editors: Dirk van der Kooij and Paul W.J.J. van der Wielen, KWR Watercycle Research Institute, The Netherlands

Author : Ainsworth R.
Publisher : World Health Organization
Page : 168 pages
File Size : 50,5 Mb
Release : 2004-09-21
Category : Business & Economics
ISBN : 9789241562515

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Safe Piped Water by Ainsworth R. Pdf

This publication addresses the factors affecting the presence and growth of micro-organisms in piped networks as well as the practices of water supply organisations that can directly or indirectly influence them. The book shows that there are often public health reasons for adopting a more proactive approach to many of the traditional practices used in designing, operating and maintaining distribution networks, and to modifying the composition of the water that is fed into those networks.

Author : National Research Council,Division on Earth and Life Studies,Water Science and Technology Board,Committee on Public Water Supply Distribution Systems: Assessing and Reducing Risks
Publisher : National Academies Press
Page : 57 pages
File Size : 54,8 Mb
Release : 2005-04-12
Category : Science
ISBN : 9780309181846

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Public Water Supply Distribution Systems by National Research Council,Division on Earth and Life Studies,Water Science and Technology Board,Committee on Public Water Supply Distribution Systems: Assessing and Reducing Risks Pdf

The Water Science and Technology Board has released the first report of the Committee on Public Water Supply Distribution Systems: Assessing and Reducing Risks, which is studying water quality issues associated with public water supply distribution systems and their potential risks to consumers. The distribution system, which is a critical component of every drinking water utility, constitutes a significant management challenge from both an operational and public health standpoint. This first report was requested by the EPA, as the agency considers revisions to the Total Coliform Rule with potential new requirements for ensuring the integrity of the distribution system. This first report identifies trends relevant to the deterioration of drinking water quality in distribution systems and prioritizes issues of greatest concern according to high, medium, and low priority categories. Of the issues presented in nine EPA white papers that were reviewed by the committee, cross connections and backflow, new or repaired water mains, and finished water storage facilities were judged by the committee to be of the highest importance based on their associated potential health risks. In addition, the report noted that two other issues should also be accorded high priority: premise plumbing and distribution system operator training. This first report will be followed in about 18 months by a more comprehensive final report that evaluates approaches for risk characterization and identifies strategies that could be considered to reduce the risks posed by water-quality deteriorating events.

Author : Mirjam Blokker,Joost Van Summeren,Vanessa Speight
Publisher : MDPI
Page : 146 pages
File Size : 51,8 Mb
Release : 2020-12-02
Category : Science
ISBN : 9783039360123

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Water Quality in Drinking Water Distribution Systems by Mirjam Blokker,Joost Van Summeren,Vanessa Speight Pdf

Safe drinking water is paramount for the health and wellbeing of all human populations. Water is extracted from surface and groundwater sources and treated to comply with drinking water standards. The water is then circulated through the drinking water distribution system (DWDS). Within the DWDS, water quality can deteriorate due to microbiological growth, chemical reactions, interactions with ageing and deteriorating infrastructure, and through maintenance and repair activities. Some DWDS actions may serve to improve water quality; however, these can adversely impact the drinking water system and cause instances of poor water quality or disease outbreaks. We invited papers covering examinations of DWDS design and operational practices and their impact on water quality. We received papers based on practical research in real DWDS and laboratory test facilities. We also received papers on novel modelling approaches. A wide range of water quality aspects was gathered, including temperature, disinfection, bacterial communities and biofilm, (fecal) contamination and QMRA, and the effects of flushing and intermittent supply.

Author : Anonim
Publisher : Unknown
Page : 72 pages
File Size : 41,7 Mb
Release : 1992
Category : Bacterial growth
ISBN : UOM:39015039943611

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Control of Biofilm Growth in Drinking Water Distribution Systems by Anonim Pdf

Author : National Research Council,Division on Earth and Life Studies,Water Science and Technology Board,Committee on Public Water Supply Distribution Systems: Assessing and Reducing Risks
Publisher : National Academies Press
Page : 405 pages
File Size : 47,5 Mb
Release : 2007-01-22
Category : Science
ISBN : 9780309103060

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Drinking Water Distribution Systems by National Research Council,Division on Earth and Life Studies,Water Science and Technology Board,Committee on Public Water Supply Distribution Systems: Assessing and Reducing Risks Pdf

Protecting and maintaining water distributions systems is crucial to ensuring high quality drinking water. Distribution systems-consisting of pipes, pumps, valves, storage tanks, reservoirs, meters, fittings, and other hydraulic appurtenances-carry drinking water from a centralized treatment plant or well supplies to consumers' taps. Spanning almost 1 million miles in the United States, distribution systems represent the vast majority of physical infrastructure for water supplies, and thus constitute the primary management challenge from both an operational and public health standpoint. Recent data on waterborne disease outbreaks suggest that distribution systems remain a source of contamination that has yet to be fully addressed. This report evaluates approaches for risk characterization and recent data, and it identifies a variety of strategies that could be considered to reduce the risks posed by water-quality deteriorating events in distribution systems. Particular attention is given to backflow events via cross connections, the potential for contamination of the distribution system during construction and repair activities, maintenance of storage facilities, and the role of premise plumbing in public health risk. The report also identifies advances in detection, monitoring and modeling, analytical methods, and research and development opportunities that will enable the water supply industry to further reduce risks associated with drinking water distribution systems.

Author : Gregory J. Kirmeyer
Publisher : American Water Works Association
Page : 286 pages
File Size : 44,9 Mb
Release : 2001
Category : Drinking water
ISBN : 9781583211021

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Pathogen Intrusion Into the Distribution System by Gregory J. Kirmeyer Pdf

Reports on a project that identifies pathogen routes of entry into water distribution systems and develops monitoring and control strategies for protecting the system. Contains chapters on pathogens and pathways, existing control strategies, transient surge modeling, pressure monitoring, field monitoring, recommended control strategies, and recommendations to utilities. The project was completed by a multi-disciplinary team of engineers and practitioners with funding from the American Water Works Association Research Foundation and the Environmental Protection Agency. The book is not indexed. Annotation c. Book News, Inc., Portland, OR (booknews.com)

Author : Michael J. MacPhee
Publisher : Unknown
Page : 216 pages
File Size : 52,6 Mb
Release : 2005
Category : Political Science
ISBN : UOM:39015062582286

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Distribution System Water Quality Challenges in the 21st Century by Michael J. MacPhee Pdf

Offering a high-level view of key distribution system water quality issues that utilities will confront in the coming decades, and a new view of an integrated treatment process, this book covers such topics as microbial regrowth and recontamination, risks associated with release of trace metals from system scale, and impacts of secondary disinfection practices. This resource targets water utility managers, water quality professionals, policy makers, regulators, consultants, and educators.

Author : R. G. Ainsworth
Publisher : IWA Publishing
Page : 168 pages
File Size : 53,6 Mb
Release : 2004-08-31
Category : Science
ISBN : 9781843390398

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Safe Piped Water by R. G. Ainsworth Pdf

The factors affecting the presence and growth of micro-organisms in piped networks are reviewed in this book, as are the practices of water supply organisations that can directly or indirectly influence their presence and growth. The information and conclusions are intended for policy makers and those responsible for formulating "Water Safety Plans" for the supply of drinking-water. It is also relevant to engineers and scientists who are responsible for water supply planning, operations and monitoring. The review shows that there are often public health reasons for adopting a more proactive approach to many of the traditional practices used in designing, operating and maintaining distribution networks, and to modifying the composition of the water that is fed into the network. Contents include the following topics: The microbiology of piped distribution systems and public health Composition of treated waters to minimise potential for microbiological changes Design and operation of distribution networks. Planned maintenance and survey of distribution systems Precautions during construction and repairs Small animals in drinking water distribution systems Risk management for distribution systems

Author : Mark W. LeChevallier,Nancy J. Shaw,Darrell B. Smith
Publisher : American Water Works Association
Page : 176 pages
File Size : 44,5 Mb
Release : 1996
Category : Biofilms
ISBN : 9780898678758

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Factors Limiting Microbial Growth in Distribution Systems by Mark W. LeChevallier,Nancy J. Shaw,Darrell B. Smith Pdf

Author : DIANE Publishing Company
Publisher : DIANE Publishing
Page : 66 pages
File Size : 55,5 Mb
Release : 1994-05
Category : Electronic
ISBN : 0788106449

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Control of Biofilm Growth in Drinking Water Distribution Systems by DIANE Publishing Company Pdf

Describes the types of organisms often present in drinking water distribution system biofilms, how biofilms are established and grow, the public health problems associated with having biofilms in the distribution system, and tools that water treatment personnel can use to help control biofilm growth. Glossary of terms, and list of additional resources. Charts, tables and photos.

Author : Bartram J.
Publisher : World Health Organization
Page : 273 pages
File Size : 44,9 Mb
Release : 2003-11-06
Category : Medical
ISBN : 9789241562263

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Heterotrophic Plate Counts and Drinking-water Safety by Bartram J. Pdf

This text prepared by an international group of experts addresses the 'heterotrophic plate count' test which is widely used in drinking-water assessment: what it detects (and what it does not detect) its direct and indirect health significance and its use in the safety management of drinking water supplies. It includes the consensus statement from an expert review meeting and takes account of the presentations and posters at an international conference on the theme co-sponsored by WHO and NSF-International. It provides valuable information on the utility and the limitations of HPC data in the management and operation of piped water systems as well as other means of providing drinking water to the public. It is of particular value to piped public water suppliers and bottled water suppliers manufacturers and users of water treatment and transmission equipment and inline treatment devices water engineers sanitary and clinical microbiologists and national and local public health officials and regulators of drinking water quality. ...The book will be of great value to the piped public water suppliers bottled water suppliers manufacturers users of water treatment and transmission equipment and online treatment device makers water supply engineers sanitary engineers clinical and water microbiologists national and local public health officials and regulators of drinking-water quality. - Indian Journal of Medical Research

Author : Gregory J. Kirmeyer
Publisher : American Water Works Association
Page : 380 pages
File Size : 51,6 Mb
Release : 2000
Category : Water
ISBN : 9781583210741

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Guidance Manual for Maintaining Distribution System Water Quality by Gregory J. Kirmeyer Pdf

The report of multi-disciplinary team of engineers and practitioners from a research project commissioned by the Association to create a resource to help water utilities operate and maintain water distributions systems to prevent water quality from deteriorating. They look at prevention programs, qu

Author : Richard Ainsworth
Publisher : Unknown
Page : 128 pages
File Size : 43,8 Mb
Release : 2004
Category : Electronic
ISBN : OCLC:1035331694

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Safe Piped Water by Richard Ainsworth Pdf