Download or read book Environmental Factors and Chemical and Microbiological Water quality Constituents Related to the Presence of Enteric Viruses in Ground Water from Small Public Water Supplies in Southeastern Michigan written by Donna S. Francy and published by . This book was released on 2004 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Environmental Factors and Chemical and Microbiological Water quality Constituents Related to the Presence of Enteric Viruses in Ground Water from Small Public Water Supplies in Southeastern Michigan written by and published by . This book was released on 2004 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scientific Investigations Report written by and published by . This book was released on 2004 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dangerous Pollutants Xenobiotics in Urban Water Cycle written by Petr Hlavinek and published by Springer Science & Business Media. This book was released on 2007-12-16 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is based on the discussions and papers prepared for the NATO Advanced Research Workshop that took place under the auspices of the NATO Security Through Science Programme and addressed urban water management problems. The workshop sought to critically assess the existing knowledge on Xenobiotics in urban water cycle, with respect to diverse conditions in participating countries, and promote close co-operation among scientists with different professional experience.
Download or read book Environmental Factors and Chemical and Microbiological Water Quality Constituents Related to the Presence of Enteric Viruses U S Geological Survey Scientific Investigations Report 2004 5219 2004 written by and published by . This book was released on 2005* with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1973 with total page 708 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Assessing Microbial Safety of Drinking Water written by A. Dufour and published by IWA Publishing. This book was released on 2003-11-01 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt: Inadequate drinking water quality and poor sanitation have remained the world's major causes of preventable morbidity and mortality. In 1996 the OECD called for concerted action to improve the assessment and management of the world's sources of drinking water. This guidance document seeks to respond to this call. It is the product of a shared initiative between the OECD and the World Health Organization. It is a state-of-the-art review that will contribute to the revisions of the WHO's Guidelines for Drinking Water Quality. Assessing Microbial Safety Of Drinking-water has elements of both revolution and evolution. It is revolutionary in that it supports a rapidly emerging approach for a broader, system-wide management perspective. This is based on a risk management framework that has evolved from the traditional indicator concept to include multiple parameters and where consideration is also given to tolerable risk, water quality targets and public health status.
Download or read book Occurrence and Distribution of Microbiological Contamination and Enteric Viruses in Shallow Ground Water in Baltimore and Harford Counties Maryland written by William S. L. Banks and published by . This book was released on 2002 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Guidelines for Drinking water Quality written by World Health Organization and published by World Health Organization. This book was released on 1993 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Regional Cooperation for Water Quality Improvement in Southwestern Pennsylvania written by National Research Council and published by National Academies Press. This book was released on 2005-04-04 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt: The city of Pittsburgh and surrounding area of southwestern Pennsylvania face complex water quality problems, due in large part to aging wastewater infrastructures that cannot handle sewer overflows and stormwater runoff, especially during wet weather. Other problems such as acid mine drainage are a legacy of the region's past coal mining, heavy industry, and manufacturing economy. Currently, water planning and management in southwestern Pennsylvania is highly fragmented; federal and state governments, 11 counties, hundreds of municipalities, and other entities all play roles, but with little coordination or cooperation. The report finds that a comprehensive, watershed-based approach is needed to effectively meet water quality standards throughout the region in the most cost-effective manner. The report outlines both technical and institutional alternatives to consider in the development and implementation of such an approach.
Download or read book Guidance Manual for Compliance with the Filtration and Disinfection Requirements for Public Water Systems Using Surface Water Sources written by David J. Hiltebrand and published by . This book was released on 1991 with total page 672 pages. Available in PDF, EPUB and Kindle. Book excerpt: This manual suggests design operating and performance criteria for specific surface water quality conditions to provide the optimum protection from microbiological contaminants.
Download or read book The Use of Models for Granting Variances from Mandatory Disinfection of Ground Water Used as a Public Water Supply written by Marylynn V. Yates and published by . This book was released on 1990 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Detection of Enteric Viruses in East Tennessee Public Ground Water Systems written by and published by . This book was released on 2005 with total page 235 pages. Available in PDF, EPUB and Kindle. Book excerpt: A two-part study was conducted by University of Tennessee-Knoxville, the U.S. Geological Survey, and the U.S. Environmental Protection Agency-National Exposure Research Laboratory to (1) develop, validate, and test a realtime reverse transcriptionpolymerase chain reaction (real−time RT−PCR) assay for enteroviruses in ground water samples and to (2) perform the first survey of enteric viral occurrence in the karst aquifers of East Tennessee. Karst aquifers are expected to have a high susceptibility to viral contamination because of the rapid flow (100ʹs of m/day) and frequent occurrence of fecal indicator bacteria typically observed in these systems. Real−time RT−PCR primers and probes specific for enteroviruses were developed and tested at the University of Tennesseeʹs Center for Environmental Biotechnology (UTCEB). The real−time RT−PCR assay was validated using co−standards: attenuated poliovirus and a DNA plasmid constructed at UTCEB (cDNA to the attenuated poliovirus). The assay was confirmed to have good PCR efficiency, reproducibility, and sensitivity. The real−time RT−PCR assay was quantitative over 6 orders of magnitude and had low minimum detection limits (0.5 plaque forming units (PFU) of the attenuated poliovirus per reaction and 10 copies of the DNA plasmid per reaction). In the field study, eight wells and springs used as raw water sources for East Tennessee public ground water systems were sampled between March and August of 2004. The wells and springs were sampled one to two times under baseflow conditions. The ground water samples were tested for enteroviruses and reoviruses by cell culture methods (total culturable viruses), enteroviruses and reoviruses by conventional RT−PCR, enteroviruses by the real−time RT−PCR assay developed at UTCEB, fecal indicator bacteria (E. coli and Bacteroides), total coliforms, and physical and chemical waterquality parameters. The wells and springs were chosen on the basis of prior monitoring of E. coli and geochemical parameters, their hydrogeologic settings, and the presence or absence of likely input sources of fecal contamination to the ground water supplies. Four sites were designated as ʺhigh riskʺ for fecal contamination and four sites were designated as ʺlow riskʺ for fecal contamination. ʺHigh riskʺ sites were expected to have higher occurrences and concentrations of enteric viruses as well as other indicators of fecal contamination, such as Bacteroides and E. coli, than ʺlow riskʺ sites. The major results of the field study were: (1) 88% of the wells and springs sampled were positive for culturable viruses (concentrations ranged from 2 MPN/100 mLto 156 MPN/100 mL), (2) 75% of the wells and springs were positive for at least one of the indicator organisms, (3) None of the wells or springs were positive for enteric viruses using the conventional RT−PCR or real−time RT−PCR methods, and (4) ʺHigh riskʺ sites had more frequent detections of enteric viruses and indicator bacteria than ʺlow riskʺ sites. However, only total coliform concentrations were statistically different (higher) between ʺhigh riskʺ and ʺlow riskʺ sites. A statistically significant positive correlation was found between total culturable virus concentrations and total coliform concentrations. Of the fecal indicators, Bacteroides had the highest co-occurrence with enteric viruses.
Download or read book Movement and Longevity of Viruses in the Subsurface written by Ann Azadpour-Keeley and published by . This book was released on 2003 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Enteric Viruses in Water written by Joseph L. Melnick and published by S. Karger AG (Switzerland). This book was released on 1984 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Virus in water Study of Finished Water from Six Communities written by Elmer W. Akin and published by . This book was released on 1975 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Drinking Water from Forests and Grasslands written by and published by . This book was released on 2000 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt:
