drinking water microbiology Articles
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Coupling microbiological testing and sanitary surveys in drinking water quality programs: results from Capiz Province, Philippines
Developing countries often struggle to conduct laboratory-based water quality testing programs due to a lack of financial and technical resources. However, inexpensive, accurate, field-based tests are being developed which have the potential to overcome this barrier. This paper provides the results of an initiative by the Provincial Health Office in Capiz, Philippines, to conduct a first-ever, ...
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Characterization of bacterial diversity in drinking water by pyrosequencing
Controlling microbial contamination of drinking water is critical to public health. However, understanding of the microbial ecology of drinking water remains incomplete. Representing the first application of high-throughput sequencing in drinking water microbiology, the objective of this study is to evaluate pyrosequencing as a high-throughput technique for the characterization of bacterial ...
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Effects of aquifer thermal energy storage on groundwater quality and the consequences for drinking water production: a case study from the Netherlands
We used data from an aquifer thermal energy storage (ATES) system located 570 m from a public water supply well field in the south of the Netherlands to investigate the relation between production of renewable energy with an ATES system and the production of drinking water. The data show that the groundwater circulation by the ATES system can impact chemical groundwater quality by introducing ...
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Safety of packaged water distribution limited by household recontamination in rural Cambodia
Packaged water treatment schemes represent a growing model for providing safer water in low-income settings, yet post-distribution recontamination of treated water may limit this approach. This study evaluates drinking water quality and household water handling practices in a floating village in Tonlé Sap Lake, Cambodia, through a pilot cross-sectional study of 108 households, ...
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Waterborne diseases in the state of Mexico, Mexico (2000-2005)
This paper reports a spatial-temporal examination of waterborne disease data from the State of Mexico, 2000 to 2005, by county as the spatial unit. It was found that the incidence of waterborne disease did not decrease during the period under study. Inequality between metropolitan areas and rural zones was observed. People living in population centres had lower incidence of water-related ...
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Away-from-home drinking water consumption practices and the microbiological quality of water consumed in rural western Kenya
A cross-sectional descriptive study was conducted to examine away-from-home drinking water consumption practices and the microbiological quality of water consumed in rural western Kenya. The study involved adults and schoolchildren. Data were collected using focus group discussions, questionnaire survey, observations, diaries and interviews. The findings suggest that away-from-home drinking water ...
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Feasibility assessment of surface water disinfection by ultrafiltration
Ultrafiltration (UF) has been presented as an alternative to chemical disinfection to obtain safe drinking water, for its ability to remove microbiological contamination. Hollow-fiber UF membranes are designed as an effective barrier to microorganisms, for their high manufacturing integrity and for the ‘potting’ method adopted to seal fibers to the feeding/extraction manifold. ...
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Increased information on waterborne outbreaks through efficient notification system enforces actions towards safe drinking water
In 1997, a compulsory notification system for waterborne outbreaks was introduced in Finland. The main aim of this notification is to obtain immediate information on suspected waterborne outbreaks in order to restrict and manage the outbreak promptly. During the past ten years, there have been 67 waterborne outbreaks in Finland, mainly associated with small groundwater supplies or private wells. ...
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Improved drinking water and diarrhoeal morbidity and mortality in developing countries: a critical review
Access to improved drinking water is widely advocated as an effective way to reduce diarrhoea-related morbidity and mortality, particularly in poorest areas of the world and in most vulnerable population segments like children. Initial focus on improved water at the source point has been replaced by an emphasis in promoting interventions to increase access to microbiologically improved drinking ...
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Quantifying micro-organism removal for safe drinking water supplies
Over the past ten years the management of microbiological drinking water quality in The Netherlands has shifted from curative administration toward a more preventative strategy. This shift in policy came as a result of the findings of reports from other developed countries which highlighted the risk from persistent pathogens such as Cryptosporidium, Giardia, some enteroviruses; and the pathogenic ...
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The Byrdstown Bac-T Revolution
Byrdstown Water Department is First to Automate Bacteriological Testing in TN You can call them pioneers or call them visionaries. But whatever you call them, Byrdstown Water is revolutionizing water quality testing in Tennessee. In November of 2019, the Byrdstown Water Department became the first water system in the State of Tennessee to implement the TECTA automated bacteriological testing ...
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DelAgua Kit Case Study - Comet-ME Testing in South Mount Hebron Region
Comet-ME is an Israeli-Palestinian NGO providing sustainable off-grid energy and water services to rural Palestinian communities in the South Mount Hebron region of the occupied Palestinian territories. The local Palestinian communities are not connected to the water grid and people depend on seasonal rainfall for their water supply, harvesting the rainwater in cisterns. Come-ME's water ...
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Development and evaluation of a small scale water disinfection system
Provision of microbiologically safe drinking water for people living in the rural areas of developing countries remains a major challenge to date. A simple gravity-driven membrane point of use system was developed based on woven fabric microfiltration (WFMF) membranes. The WFMF is a loose type of membrane (0.45 μm). However, complete disinfection is not achieved with the WFMF, hence it was ...
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Comparison of four β-glucuronidase and β-galactosidase-based commercial culture methods used to detect
Escherichia coli and total coliforms in waterThe MI agar, Colilert®, Chromocult coliform® agar, and DC with BCIG agar chromogenic culture-based methods used to assess microbiological quality of drinking water were compared in terms of their ubiquity, sensitivity, ease of use, growth of atypical colonies and affordability. For ubiquity, 129 total coliform (representing 76 species) and 19 Escherichia coli strains were tested. ...
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Humanitarian Kiosk Water Treatment- Haiti - Case Study
Challenge A leading provider of safe drinking water to Haiti's under served communities through water kiosks had several water quality issues to deal with upon implementing their pilot program of 10 water kiosks. There was discussion of using surface water or deep well bore water, however, both were unsuitable for drinking water purposes due to microbiological and mineral contamination. ...
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A novel technology to improve drinking water quality: a microbiological evaluation of in-home flocculation and chlorination in rural Guatemala
An estimated 1 billion persons in low-income countries do not have access to improved drinking water. Chlorine, a useful water treatment agent, is less effective in turbid water, and lacks a visible effect, limiting its acceptability. A product incorporating precipitation, coagulation, flocculation, and chlorination technology (combined product) to reduce microbial, organic and heavy metal ...
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Evaluation of an MPN test for the rapid enumeration of
Pseudomonas aeruginosa in hospital watersIn this study, the performance of a new most probable number (MPN) test (Pseudalert®/Quanti-Tray®) for the enumeration of Pseudomonas aeruginosa from hospital waters was compared with both international and national membrane filtration-based culture methods for P. aeruginosa: ISO 16266:2006 and UK The Microbiology of Drinking Water – Part 8 (MoDW Part 8), which both use ...
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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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Microbial indicators, pathogens and methods for their monitoring in water environment
Water is critical for life, but many people do not have access to clean and safe drinking water and die because of waterborne diseases. The analysis of drinking water for the presence of indicator microorganisms is key to determining microbiological quality and public health safety. However, drinking water-related illness outbreaks are still occurring worldwide. Moreover, different indicator ...
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Effectiveness of silver and copper infused ceramic drinking water filters in reducing microbiological contaminants
A series of bench-scale experiments were conducted on ceramic filters with various amounts of silver and/or copper nanoparticles fired-in during the manufacturing process. The experiments were designed to determine the efficacy of the filters on the removal of pathogens from drinking water. Escherichia coli and MS2 were employed as non-pathogenic surrogates for pathogenic organisms. ...
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