The Integrity Of Water
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Author | : National Research Council |
Publisher | : National Academies Press |
Total Pages | : 404 |
Release | : 2006-12-22 |
Genre | : Science |
ISBN | : 0309133955 |
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 | : |
Publisher | : |
Total Pages | : 240 |
Release | : 1977 |
Genre | : Water |
ISBN | : |
Author | : David Groenfeldt |
Publisher | : Routledge |
Total Pages | : 208 |
Release | : 2013-10-01 |
Genre | : Nature |
ISBN | : 1136241086 |
This book introduces the idea that ethics are an intrinsic dimension of any water policy, program, or practice, and that understanding what ethics are being acted out in water policies is fundamental to an understanding of water resource management. Thus in controversies or conflicts over water resource allocation and use, an examination of ethics can help clarify the positions of conflicting parties as preparation for constructive negotiations. The author shows the benefits of exposing tacit values and motivations and subjecting these to explicit public scrutiny where the values themselves can be debated. The aim of such a process is to create the proverbial 'level playing field', where values favoring environmental sustainability are considered in relation to values favoring short-term exploitation for quick economic stimulus (the current problem) or quick protection from water disasters (through infrastructure which science suggests is not sustainable). The book shows how new technologies, such as drip irrigation, or governance structures, such as river basin organizations are neither "good" nor "bad" in their own right, but can serve a range of interests which are guided by ethics. A new ethic of coexistence and synergies with nature is possible, but ultimately depends not on science, law, or finances but on the values we choose to adopt. The book includes a wide range of case studies from countries including Australia, India, Philippines, South Africa and USA. These cover various contexts including water for agriculture, urban, domestic and industrial use, the rights of indigenous people and river, watershed and ecosystem management.
Author | : Obi Kaufmann |
Publisher | : Heyday Books |
Total Pages | : 144 |
Release | : 2019 |
Genre | : Nature |
ISBN | : 9781597144698 |
Obi Kaufmann, author of the best-selling California Field Atlas, turns his artful yet analytical attention to the Golden State's single most complex and controversial resource: water. In this new book, full-color maps unravel the braided knot of California's water infrastructure and ecosystems, exposing a history of unlimited growth in spite of finite natural resources--a history that has led to its current precarious circumstances. Yet this built world depends upon the biosphere, and in The State of Water Kaufmann argues that environmental conservation and restoration efforts are necessary not only for ethical reasons but also as a matter of human survival. Offering nine perspectives to illustrate the most pressing challenges facing California's water infrastructure, from dams to species revitalization, Kaufmann reveals pragmatic yet inspiring solutions to how water in the West can continue to support agriculture, municipalities, and the environment. Interspersed throughout with trail paintings of animals that might yet survive under a caring and careful water ethic, Kaufmann shows how California can usher in a new era of responsible water conservation, and--perhaps most importantly--how we may do so together.
Author | : Geneviève M. Carr |
Publisher | : UNEP/Earthprint |
Total Pages | : 132 |
Release | : 2008 |
Genre | : Business & Economics |
ISBN | : 9789295039513 |
This document is intended to provide an overview of the major components of surface and ground water quality and how these relate to ecosystem and human health. Local, regional and global assessments of water quality monitoring data are used to illustrate key features of aquatic environments, and to demonstrate how human activities on the landscape can influence water quality in both positive and negative ways. Clear and concise background knowledge on water quality can serve to support other water assessments.
Author | : Tabassum Abbasi |
Publisher | : Elsevier |
Total Pages | : 375 |
Release | : 2012-03-10 |
Genre | : Technology & Engineering |
ISBN | : 0444543058 |
This book covers water quality indices (WQI) in depth – it describes what purpose they serve, how they are generated, what are their strengths and weaknesses, and how to make the best use of them. It is a concise and unique guide to WQIs for chemists, chemical/environmental engineers and government officials. Whereas it is easy to express the quantity of water, it is very difficult to express its quality because a large number of variables determine the water quality. WQIs seek to resolve the difficulty by translating a set of a large number of variables to a one-digit or a two-digit numeral. They are essential in communicating the status of different water resources in terms of water quality and the impact of various factors on it to policy makers, service personnel, and the lay public. Further they are exceedingly useful in the monitoring and management of water quality. With the importance of water and water quality increasing exponentially, the importance of this topic is also set to increase enormously because only with the use of indices is it possible to assess, express, communicate, and monitor the overall quality of any water source. - Provides a concise guide to WQIs: their purpose and generation - Compares existing methods and WQIs and outlines strengths and weaknesses - Makes recommendations on how the indices should be used and under what circumstances they apply
Author | : World Health Organization |
Publisher | : World Health Organization |
Total Pages | : 260 |
Release | : 1993 |
Genre | : Medical |
ISBN | : 9789241545037 |
This volume describes the methods used in the surveillance of drinking water quality in the light of the special problems of small-community supplies, particularly in developing countries, and outlines the strategies necessary to ensure that surveillance is effective.
Author | : Thomas P. Simon |
Publisher | : CRC Press |
Total Pages | : 700 |
Release | : 1998-10-14 |
Genre | : Science |
ISBN | : 9780849340079 |
This book examines the application of fish community characteristics to evaluate the sustainability and biological integrity of freshwaters. Topics include perspectives on use of fish communities as environmental indicators in program development, collaboration, and partnership forming; influence of specific taxa on assessment of the IBI; regional applications for areas where the IBI had not previously been developed; and specific applications of the IBI developed for coldwater streams, inland lakes, Great Lakes, reservoirs, and tailwaters.
Author | : National Research Council |
Publisher | : National Academies Press |
Total Pages | : 569 |
Release | : 2000-02-17 |
Genre | : Nature |
ISBN | : 0309172683 |
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.
Author | : Claude E. Boyd |
Publisher | : Springer Nature |
Total Pages | : 441 |
Release | : 2019-09-12 |
Genre | : Science |
ISBN | : 3030233359 |
This volume is of great importance to humans and other living organisms. The study of water quality draws information from a variety of disciplines including chemistry, biology, mathematics, physics, engineering, and resource management. University training in water quality is often limited to specialized courses in engineering, ecology, and fisheries curricula. This book also offers a basic understanding of water quality to professionals who are not formally trained in the subject. The revised third edition updates and expands the discussion, and incorporates additional figures and illustrative problems. Improvements include a new chapter on basic chemistry, a more comprehensive chapter on hydrology, and an updated chapter on regulations and standards. Because it employs only first-year college-level chemistry and very basic physics, the book is well-suited as the foundation for a general introductory course in water quality. It is equally useful as a guide for self-study and an in-depth resource for general readers.