Strategies For Managing Total Coliform And E Coli In Distribution Systems
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Strategies For Managing Total Coliform And E Coli In Distribution Systems
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Author :
language : en
Publisher: American Water Works Association
Release Date : 2009
Strategies For Managing Total Coliform And E Coli In Distribution Systems written by and has been published by American Water Works Association this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009 with Bacterial pollution of water categories.
Pathogen Intrusion Into The Distribution System
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Author : Gregory J. Kirmeyer
language : en
Publisher: American Water Works Association
Release Date : 2001
Pathogen Intrusion Into The Distribution System written by Gregory J. Kirmeyer and has been published by American Water Works Association this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with Drinking water categories.
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)
Coliforms In Distribution Systems
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Author : Graham A. Gagnon
language : en
Publisher: American Water Works Association
Release Date : 2007
Coliforms In Distribution Systems written by Graham A. Gagnon and has been published by American Water Works Association this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with Drinking water categories.
The objective of this project is to understand the potential mechanisms of antimicrobial resistance of E. coli and opportunistic pathogens under disinfection conditions. The project involves molecular techniques to understand genetic changes in biofilm and suspended bacteria in response to different disinfectant conditions. It examines the effects of using single chemical disinfectants (free chlorine, chloramines, and chlorine dioxide) compared with UV light pretreatment, as well as the impact of pipe material (polycarbonate or cast iron) and E. coli mutations. Field studies include both surface water and groundwater.
Watershed Management For Potable Water Supply
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Author : National Research Council
language : en
Publisher: National Academies Press
Release Date : 2000-03-17
Watershed Management For Potable Water Supply written by National Research Council and has been published by National Academies Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000-03-17 with Nature categories.
In 1997, New York City adopted a mammoth watershed agreement to protect its drinking water and avoid filtration of its large upstate surface water supply. Shortly thereafter, the NRC began an analysis of the agreement's scientific validity. The resulting book finds New York City's watershed agreement to be a good template for proactive watershed management that, if properly implemented, will maintain high water quality. However, it cautions that the agreement is not a guarantee of permanent filtration avoidance because of changing regulations, uncertainties regarding pollution sources, advances in treatment technologies, and natural variations in watershed conditions. The book recommends that New York City place its highest priority on pathogenic microorganisms in the watershed and direct its resources toward improving methods for detecting pathogens, understanding pathogen transport and fate, and demonstrating that best management practices will remove pathogens. Other recommendations, which are broadly applicable to surface water supplies across the country, target buffer zones, stormwater management, water quality monitoring, and effluent trading.
Microbial Quality Of Water Supply In Distribution Systems
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Author : Edwin E. Geldreich
language : en
Publisher: CRC Press
Release Date : 2020-07-26
Microbial Quality Of Water Supply In Distribution Systems written by Edwin E. Geldreich and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-07-26 with Technology & Engineering categories.
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.
Assessing And Controlling Bacterial Regrowth In Distribution Systems
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Author :
language : en
Publisher: American Water Works Association
Release Date : 1990
Assessing And Controlling Bacterial Regrowth In Distribution Systems written by and has been published by American Water Works Association this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with Disinfection and disinfectants categories.
Heterotrophic Plate Counts And Drinking Water Safety
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Author : Bartram J.
language : en
Publisher: World Health Organization
Release Date : 2003-11-06
Heterotrophic Plate Counts And Drinking Water Safety written by Bartram J. and has been published by World Health Organization this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003-11-06 with Medical categories.
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
Application Of Haccp For Distribution System Protection
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Author : Kathy Martel
language : en
Publisher: American Water Works Association
Release Date : 2006
Application Of Haccp For Distribution System Protection written by Kathy Martel and has been published by American Water Works Association this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with Science categories.
OBJECTIVES: The purpose of this project was to evaluate the application of the Hazard Analysis Critical Control Point (HACCP) system, a risk management tool, to better protect water quality in distribution systems. BACKGROUND: HACCP was first conceived in 1959 by the Pillsbury Company to improve food safety for NASA & rsquo;s manned space missions. Since the 1980s, HACCP has been widely adopted by the food and beverage industry worldwide, where it forms an important part of their food safety plans. Since the mid-1990s, HACCP has been applied by a number of individual drinking water systems and has been incorporated into many drinking water regulatory requirements and guidelines around the globe. HIGHLIGHTS: Project pilot studies illustrated that HACCP can be applied to water distribution systems, but time and resource requirements were greater than anticipated. Project case studies showed that most utilities that achieved HACCP certification had first implemented ISO 9001 and ISO 14001 or similar systems to gain management control of people and processes. The case study utilities operated one integrated management system including the ISO systems as well as HACCP to avoid duplication of tasks, reduce staff time and costs, and improve process integration. All case study utilities believed that, overall, the benefits of the HACCP system outweighed the costs.
Drinking Water Distribution Systems
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Author : National Research Council
language : en
Publisher: National Academies Press
Release Date : 2007-01-22
Drinking Water Distribution Systems written by National Research Council and has been published by National Academies Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007-01-22 with Science categories.
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.
Microbial Quality Of Water Supply In Distribution Systems
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Author : Edwin E. Geldreich
language : en
Publisher: CRC Press
Release Date : 2020-07-26
Microbial Quality Of Water Supply In Distribution Systems written by Edwin E. Geldreich and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-07-26 with Technology & Engineering categories.
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.