Results 141 to 150 of about 22,814 (179)
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Prediction of Salmonella in seawater by total and faecal coliforms and Enterococci
Marine Pollution Bulletin, 2009The power of total coliforms (TC), faecal coliforms (FC) and Enterococci to predict the presence of Salmonella in seawater was investigated. Indicator cut-off values with the most satisfactory combination of sensitivity and specificity in predicting Salmonella presence were 1,000 CFU 100ml(-1)TC, 200 CFU 100ml(-1)FC, 500 CFU 100ml(-1) Enterococci. When
Maria A, Efstratiou +2 more
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Total Coliform Survival Characteristics in Frozen Soils
Journal of Environmental Engineering, 2007Survival characteristics of total coliform bacteria in soil samples, with different moisture contents (24–49%) and at different temperatures (from −28 to 20°C ), were studied. The study showed that a significant fraction of coliform bacteria survive for more than six months in soil at subfreezing temperatures.
Hrishikesh Adhikari +3 more
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Prepare for the Revised Total Coliform Rule
Opflow, 2014Public health is protected when system operators can respond quickly to correct situations in which coliform bacteria occur in drinking water. A key to success is being aware of where and how such events can occur.
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1977
Although the total coliform bacterial count has its shortcomings, it is our best indicator of the health hazards associated with drinking water that we have today. Some of these defects can be corrected by additional bacterial tests to determine interference or identify nonconliform lactose fermenting organisms.
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Although the total coliform bacterial count has its shortcomings, it is our best indicator of the health hazards associated with drinking water that we have today. Some of these defects can be corrected by additional bacterial tests to determine interference or identify nonconliform lactose fermenting organisms.
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Building an Improved Total Coliform Rule
Journal AWWA, 2010This article discusses a September 2008 agreement in principle (AIP) recommending a number of key changes to the Total Coliform Rule (TCR) that were agreed upon by the TCR Distribution System Federal Advisory Committee (TCRDSAC).
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Statistical limitations in the usefulness of total coliform data
Journal AWWA, 2009Most water systems— rates of coliform‐positive samples are well below the 5% trigger for the monthly maximum contaminant level (MCL) set by the Total Coliform Rule (TCR). This study reviewed results of 540,357 samples collected from 15 systems and represented more than 12 years of sampling.
Jeffrey S. Rosen +2 more
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The impedance method for monitoring total coliforms in wastewaters
Folia Microbiologica, 1984An impedance technique is presented as a method which offers promise as a test for estimating the numbers of total coliform bacteria in wastewaters. The technique reported here has the advantage of being 3-4 times faster than the standard membrane filter method (i.e. 4-7 h, compared with 20-24 h).
J R, Tenpenny, R D, Tanner, G W, Malaney
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Seasonal total coliform dynamics in a drinking water reservoir
Water ResearchMaintaining high-quality drinking water supply reservoirs is important for protecting public health. Despite extensive watershed protection efforts, reservoirs can still experience seasonal, elevated total coliform bacteria concentrations, indicator bacteria commonly used for regulations.
Carlos Eduardo Veras +4 more
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Escherichia coli and total coliforms in water and sediments at lake marinas
Environmental Pollution, 2002Escherichia coli, a fecal coliform, and total coliforms were monitored between September 1999 and October 2001 in five marinas at Lake Texoma, located on the Oklahoma and Texas border. The general trend was that densities of E. coli were lower in the summer season due to the lower loading of fecal material into Lake Texoma and the ecological conditions
Youn-Joo, An +2 more
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Total Coliform Rule in USEPA sights for revision
Journal AWWA, 2002This article discusses the first six‐year review by the US Environmental Protection Agency (USEPA) of current national primary drinking water regulations (NPDWRS), resulting in a preliminary decision that the total coliform rule (TCR) can be improved, whereas none of 68 chemical contaminants is ripe for revision at this time.
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