drinking water contaminant Articles
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Potential Drinking Water Contamination Analyzed
A comparison of more than 100 large US cities showed pollution from point and nonpoint sources Too often, surveys of water quality in the United States have been regionally inconsistent patchworks that neglect many unregulated contaminants. A granular study of potential source water contamination in the largest cities in the U.S. has been lacking. New research in the journal Nature, however, ...
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Study: Drinking Water Contaminants Cause 100,000 Cancers
Researchers suggest ways to reduce risks in water sources A new Environmental Working Group (EWG) study of contaminants in drinking water, conducted between 2010 and 2017 in the United States, suggests they may cause 100,000 lifetime cancer cases. The research team of Sydney Evans, Chris Campbell, and Olga V. Naidenko attributed the cumulative risk primarily to arsenic, disinfection byproducts, ...
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Contamination accidents in China's drinking water distribution networks: status and countermeasures
In recent years, frequent urban drinking water contamination accidents have caused significant impacts on society in China. However, emergency measures are primarily realized as management policies lack systematic technologies especially for those within-network contamination accidents. The aim of this paper is to perform analysis on cases of contaminant accidents that occurred in water ...
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Outbreak of acute gastroenteritis due to a washwater-contaminated water supply, Switzerland, 2008
An operating error in a sewage treatment plant led to severe drinking water contamination in a well-defined district of a suburban municipality of Zurich, Switzerland. Despite the alert issued to the local population on the same day advising people not to consume the contaminated water, cases of acute gastroenteric diseases were subsequently observed. Considerable faecal contamination was ...
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Semi-volatile organics in drinking water using EPA method 525.2 optimized for greater sensitivity
The US EPA Drinking Water Manual contains the methods used to identify and quantify regulated and unregulated organic drinking water contaminants. Included in this manual is Method 525.2, a Gas Chromatographic/ Mass Spectrophotometric (GC/MS) technique for the determination of semi-volatile organic compounds. Method 525.2 can be used for the identification and quantification of a group of ...
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Global water challenges
Across the globe, 2.5 billion people lack access to improved sanitation. One billion have to defecate in the open, 748 million lack access to improved drinking water and 1.8 billion use a source of drinking water contaminated with faeces. These are some of the statistics that highlight the enormity of the challenge facing the world if the draft Sustainable Development Goal of safe drinking water, ...
By SciDev.Net
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Are you drinking water that is contaminated?
Why Distilled water by the experts There is a huge need in the world for the purest water possible, to combat the high levels of pollutants and chemicals found in today's water supply. This can be provided by the process of Distillation. see below expert opinion. http://www.distilledwaterassociation.org/ https://www.ecclesia.org/truth/water.html The serious effects of climate change ...
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EPA Speeds Alternative Method Approvals
As anyone in the water business will tell you, standard analytical methods are critically important. On April 10, 2007, the EPA announced its intent to implement an expedited process for approving alternative analytical testing methods under various federal water programs. Background Under the Safe Drinking Water Act (SDWA), EPA promulgates national primary drinking water regulations (NPDWRs) ...
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Fecal contamination of drinking water in Kericho District, Western Kenya: role of source and household water handling and hygiene practices
Inadequate protection of water sources, and poor household hygienic and handling practices have exacerbated fecal water contamination in Kenya. This study evaluated the rate and correlates of thermotolerant coliform (TTC) household water contamination in Kericho District, Western Kenya. Culture and multiplex polymerase chain reaction (PCR) techniques were used to characterize TTCs. The disk ...
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In-stream detection of waterborne priority pollutants, and applications in drinking water contaminant warning systems
Advancements in real-time water monitoring technologies permit rapid detection of in-stream, in-pipe water quality, and alert of threats from waste loads. Legislation mandating the establishment of water resources monitoring, presence of hazardous contaminants in effluents, and perception of the vulnerability of the water distribution system to attacks, have spurred technical and economic ...
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Ancient Zeolite Water Purification System Discovered
About two thousand years ago in North America the Mayan people in what is now Mexico were already using large-scale sophisticated water filtration systems using natural zeolite. A zeolite filtration system discovered at Tikal’s Corriental reservoir is the oldest known example of water purification in the Western Hemisphere and the oldest known use of zeolite for decontaminating drinking ...
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Influencing factors in the occurrence of injured coliforms in the drinking water distribution system in the city of La Plata, Argentina
The objective of this study was to evaluate the influencing factors in the occurrence of coliforms in the drinking water in La Plata (Argentina) from June 1999 to June 2001. A total of 180 samples were collected from Rio de La Plata (102 samples) and Puelche Aquifer (78 samples); 45 samples were collected for each of the four seasons. The membrane filter procedure was used for isolating bacteria, ...
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Drinking Water Analysis Guide
Public Water Systems (PWS), regulated by the United States Environmental Protection Agency (USEPA), provide drinking water to 90% of Americans. Water systems and laboratories testing drinking water for Safe Drinking Water Act (SDWA) compliance must be certified and must use USEPA approved methods, which are developed by the USEPA, other government agencies, universities, consensus method ...
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Natural background levels for chemicals in Icelandic aquifers
Information about natural background levels (NBLs) of chemicals in source waters allows water utilities to identify trends in drinking water contamination. We estimate NBLs for chemicals in source waters for Icelandic water utilities at both national levels with all data pooled, and according to geological regime. NBLs were derived by collecting samples from 79 aquifers considered largely ...
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Occurrence of
Aeromonas spp. in a random sample of drinking water distribution systems in the USAAeromonads are aquatic bacteria found in drinking water supplies worldwide. Some species, such as Aeromonas hydrophila, can cause disease in humans. For this survey, 293 United States public water systems were selected using random sampling, stratified by water source and system type. Water samples were collected during one year from three sites (six samples per site) in each system. Temperature, ...
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Salt Water Creeps Onto East Coast
Seawater is rapidly intruding into coastal aquifers, but alternative water sources can slow its progress On the East Coast of the United States, seawater is creeping inland, contaminating fresh water in underground aquifers. This intrusion is not uncommon. Since salt water has a higher density than fresh, it sinks to the bottom of the water table, often without affecting the fresh water above. ...
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Ionex- Versatile ion exchange technology for Nitrate removal
Belgian separations technology company PuriTech (www.puritech.be) has designed an ion exchange system that improves liquid–resin contact efficiency while reducing plant operating costs and capital expenditure. Targeted at a broad range of industries, one area where the system is now showing its strength is in the removal of nitrates from drinking water, asPuriTech's Filip Rochette explains. ...
By PuriTech Ltd
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EPA Confirms it will set MCLs for PFAS and PFOA
U.S. Senator Tom Carper (D-DE), a top Democrat on the Senate Environment and Public Works Committee (EPW) applauds an announcement from David Ross, EPA Assistant Administrator for water, indicating the Agency intends to set a legal limit for two toxic per- and polyfluoroalkyl substances (PFAS) chemicals found in drinking water. Specifically, the Agency will regulate perfluorooctane sulfonate ...
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Managing uncertainty in the provision of safe drinking water
The Canadian Water Network, the Alberta Water Research Institute, and the Ontario Centres of Excellence have collaborated to create the Canadian Municipal Water Management Research Consortium, a new initiative to engage municipal water authorities and allow them to access research capacity to tackle mutually identified, critical issues. The challenge of managing uncertainty in the provision of ...
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[Wellspring] Hydration On The Go
Our latest article explores the importance of the ultimate travel essential that ensures clean and safe drinking water wherever you go. Traveling to new destinations can be an exhilarating experience, but it also comes with concerns about the safety of the water we consume. With our portable water purifier, those worries become a thing of the past. Wellspring-S removes contaminants and ...
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