Showing results for: total Coliforms Articles
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The predictive value of total coliforms in drinking water using life table analysis
Total coliform monitoring in distribution systems is no longer a required parameter in many countries but is still mandated in Canada and the USA. The value of reporting total coliform results in drinking water is a topic of debate. Total coliform and Escherichia coli results from small drinking water systems tested over a 3-year period in British Columbia were analyzed using life table ...
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Comparison of MI, Chromocult® coliform, and Compass CC chromogenic culture-based methods to detect Escherichia coli and total coliforms in water using 16S rRNA sequencing for colony identification
The MI, Chromocult® coliform, and Compass CC chromogenic culture-based methods used to assess water quality by the detection of Escherichia coli and total coliforms were compared in terms of their specificity and sensitivity, using 16S rRNA sequencing for colony identification. A sewage water sample was divided in 2-μL subsamples for testing by all three culture-based methods. All growing ...
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TECTA B16 Success Story - Tampa Bay SWTP - Case Study
TECTA Automated Microbiological Testing System Being Used Successfully at a Surface Water Treatment Plant in Tampa, FL. The TECTA automated microbiological testing system has received an enthusiastic welcome, where it is being used for operational testing for E. coli and Total Coliform bacteria in both raw and fi nished water samples. The TECTA system has the unique capability to continuously ...
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Impact of mixing phenomenon at cross junctions on the variation of total coliform and E. coli in water distribution systems: experimental study
This study investigates factors that influence the growth and diffusion of microorganism especially total coliform and Escherichia coli (E. coli) in water distribution networks. The experiments were carried out in a laboratory distribution network where different flow directions at junctions, varying inlet flow rates, initial chlorine doses and natural organic matter were studied. Depending ...
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An Evaluation of the Effectiveness of the Gunderboom® in Protecting Waters from Bacteria
Beaches located in the narrow inlet of Long Island Sound frequently contain high concentrations of bacteria. A Gunderboom® BPS™ (Beach Protection System) filter was installed in Harbor Island Park of Mamaroneck Harbor, New York, in 2002 to reduce bacterial levels in the water. Water and sediment collected inside and outside the Gunderboom® and other areas within Mamaroneck Harbor (Shore Acres ...
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Occurrence of norovirus and other enteric viruses in untreated groundwaters of Korea
A total of 39 water samples from 23 different groundwater wells in Korea were collected and analyzed in order to monitor the occurrence of norovirus (NoV) and other indicator microbes as the first part of a national survey of groundwater. More than 500 L of untreated groundwater were filtered through 1MDS filters. Following elution and concentration by organic flocculation, PCR and sequence ...
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Summary of Evaluation of Techniques for Measuring Microbial Hazards in Bathing Waters: A Comparative Study
Technology Type: Advanced System for Coliform and E.coli Detection Application: Analysis of Coliforms and E.coli in Remote Site Waters Technology Name: TECTA B16 Company: Pathogen Detection Systems, Inc. Address: 382 King St. East, Kingston, Ontario, Canada K7K 2Y2 Web Site: www.tecta-pds.com This is a fully external evaluation of the TECTA B16 advanced system against a conventional ...
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Hand-pumps as reservoirs for microbial contamination of well water
The retention and release of total coliforms and Escherichia coli was investigated in hand-pumps removed from tubewells tapping a faecally contaminated aquifer in Matlab, Bangladesh, and from a new hand-pump deliberately spiked with E. coli. All hand-pumps were connected to reservoirs of sterile water and flushed. Faecal coliforms were observed in the discharge from all three of the previously ...
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Tamworth Environmental Laboratory (TEL) - Case Study
Tamworth Environmental Laboratory (TEL) is a unit of Tamworth Regional Council (TRC) and primarily offers environmental testing services to the North West, Northern Tablelands and Liverpool Plains regions of New South Wales in Australia. This area incorporates regional cities and remote and isolated communities. Accredited by the National Association of Testing Authorities (NATA) for a range of ...
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New Zealand Drinking Water Standards
The availability of safe drinking water is an essential requirement for all New Zealanders, irrespective of their status. The NZ Drinking Water Standards, as set by the Ministry of Health, provide requirements for drinking water safety by stipulating; (1) maximum amounts of substances or organisms or contaminants or residues that may be present in drinking-water, (2) criteria for demonstrating ...
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TECTATM Success Story PUB Mobile Lab Application
Challenge Detected Singapore’s water quality is well within the water guidelines set by the World Health Organization (WHO), and is suitable for drinking without any further filtration. PUB has implemented a comprehensive water quality sampling and monitoring system that carefully tracks the water quality at raw water source, all stages of the water treatment process and throughout the ...
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Project - Fenton Leads the Way in Water Testing - City of Fenton (USA)
Fenton is a classic rural American city nestled approximately 65 miles north of Detroit in the state of Michigan. Although not one of the bigger metropolises’ in the US, Fenton takes pride in its use of new technologies to better serve its residents. One Example would be the State-of-the-Art Water Treatment Facility, in which current staff helped start-up. When Superintendent Stephen Guy ...
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Real-Time Faecal Coliform Water Quality Monitoring in Chicago, USA Case Study
Total coliforms, E.coli or faecal coliforms are probably the most important water quality parameters there are for recreational water bodies such as rivers, lakes, water parks or marine bathing waters. However, the decision to allow such water bodies to be fit for recreational activities typically takes 24-72 hours -- when relying on traditional lab testing methods -- after the water sample has ...
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Fulton County Public Works - Case Study
The Water Services Division of Public Works mission is to protect the health, safety and welfare of Fulton County’s citizens through systematic planning, construction, maintenance and operation of the water, wastewater and storm water infrastructure in the most sustainable, efficient and environmentally sound manner. Fulton County Public Works is staying on the cutting edge with its use of ...
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The biological safety of distribution systems following UV disinfection in rural areas in Beijing, China
In rural areas, UV disinfection has a great potential for drinking water treatment because of the ability to achieve target disinfection levels and the ease of operation and maintenance; however, UV disinfection provides no disinfection residual to the water distribution system. This study examines the biological safety of rural water distribution systems following UV disinfection. The results ...
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Specificity of a defined substrate method used to monitor balneability of tropical coastal waters impacted by polluted stormwater
Defined substrate (DS) is an alternative technique to monitoring the water quality based on species-specific enzyme activity. Although more sensitive and more specific than traditional media, there is some controversy over use in the warmer waters of tropical and subtropical environments, rich in organic matter and microorganism groups capable of interfering with results. The aim of this study ...
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The effect of operating parameters on the performance of a biosand filter: a statistical experiment design approach
The influence of three important parameters, namely, pause time, charge volume and influent turbidity on the performance of a biosand filter (BSF) was assessed by employing response surface methodology with a Box-Behnken design. Fifteen runs were conducted in triplicate using a full-scale BSF with a pore volume of 19.6 L, and the performance of the filter was assessed by monitoring total ...
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Implementing an On-Site Drinking Water Monitoring System in Indigenous Communities Across Canada
Status of Drinking Water in Indigenous Communities Indigenous communities including First Nations reserves across Canada have a notorious history of poor or inconsistent drinking water quality Many communities (55 as of Mar. 25, 2021) are under long-termdrinking water advisories, meaning potable tap water has not been available for several years The Canadian Government has a program to ...
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Broader incubation temperature tolerances for microbial drinking water testing with enzyme substrate tests
Microbiological testing is an integral part of measures to ensure safe drinking water. However, testing can be restricted in low-resource settings by the requirement for specialized laboratory facilities and testing procedures. Precisely controlled incubation temperature is one example. The effect of varied incubation temperatures on the performance of two enzyme substrate tests for the ...
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Automated Microbial Detection System Receives Australian Accreditation
The National Association of Testing Authorities (NATA), Australia’s national accreditation body for laboratories, inspection bodies and calibration services, has granted accreditation to an innovative automated microbial detection system for use at the Tamworth Environmental Laboratory. The Tamworth Environmental Laboratory primarily offers environmental testing services to the North West, ...
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