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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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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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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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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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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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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Physical, chemical, bacteriological and radioisotopic parameters from springs and wells around Jocotitlan volcano, Mexico
Samples from seven springs and two wells around Jocotitlan volcano (Mexico), mainly used as drinking water supplies, were studied for physical, chemical, bacteriological and radioisotopic parameters. The temperature of the majority of the water was 5°C higher than the average atmospheric temperature of the zone, indicating a geothermal potential. The water type was bicarbonated mixed, related to ...
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Long-term behaviour of a gravity-driven dead end membrane filtration unit for potable water supply in cases of disasters
The frequentness of serious natural disasters will rise against the background of climate change in the next decades. One of the most severe impacts of natural disasters is the interruption of drinking water supply. Contaminated water causes the death of thousands of people worldwide every year. Mobile waterworks used by aid organizations are sophisticated systems with high demand of energy, ...
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Life cycle analysis of two Hungarian drinking water arsenic removal technologies
Determining a technology's merit as a solution to Hungarian drinking water arsenic contamination goes beyond technical concerns: environmental and economic aspects also play very important roles. In an effort to address the current arsenic drinking water requirements in Hungary, life cycle analysis (LCA) methodology was applied on two example arsenic removal technologies, ...
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Environmental health aspects of drinking water-borne outbreak due to karst flooding: case study
Climate change may increase the incidence of waterborne diseases due to extreme rainfall events, and consequent microbiological contamination of the water source and supply. As a result of the complexity of the pathways from the surface to the consumer, it is difficult to detect an association between rainfall and human disease. The water supply of a Hungarian city, Miskolc (174,000 inhabitant), ...
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Solutions for removing arsenic from drinking water
Arsenic, a metalloid element, is found in many naturally occurring compounds. In its inorganic form, arsenic is toxic. Arsenic occurs naturally in some groundwater supplies worldwide, including in the drinking water supplies in parts of Taiwan, Japan, Bangladesh, and western South America. This is causing health problems, according to the American Cancer Society. Albuquerque, New Mexico, is the ...
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Solutions for Safe Drinking Water Through Biological Water Treatments
Most people across the U.S. expect to turn on their faucets and have immediate access to clean drinking water. The truth is, it wasn’t until 1974 that Congress passed the Safe Water Drinking Act with the goal of regulating the nation’s public water supply. Over the years, the SWDA has been amended to include water sources as well, such as rivers, lakes, springs and groundwater wells ...
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Urban Sprawl, Water Insecurity, and Enteric Diseases in Children from Mexico City
An ecosystem approach was adopted to investigate the interactions among anthropogenic habitat alterations, overcrowding, water insecurity, and enteric diseases in young children in Mexico City. A geographic information system (GIS) was used to define eligible wells and surrounding homesteads. Water quality was obtained from previously published investigations, and bacterial indicators included ...
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Towards lessons from the field in India drinking : lessons from the field
India being a vast and diverse country, we face many challenges in ensuring reliable, sustainable safe drinking water supply to rural households of the country. Though, in terms of provision of safe drinking water, we have covered more than 90 percent of the rural households, according to the National Sample Survey Office (NSSO) 65th round survey 2008-09, the authors have to recognize that much ...
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Partnership - PHILOS & Aquammodate partners to revolutionize the desalination industry with biomimetic membranes.
PHILOS Co. Ltd., a leading manufacturer of membranes for wastewater treatment, announces a collaboration with Aquammodate, a Gothenburg, Sweden-based green technology firm. The two firms intend to collaborate on the development and commercialization of pilot-scale membrane production. PHILOS has over two decades of experience creating and commercializing membranes and is devoted to continuing to ...
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EM Pure Reverse Osmosis Systems
The Problem More Dissolved Solids Than Desired In A Water Source Water is never completely free of dissolved solids. It contains varying amounts of impurities which are identified as hardness, alkalinity, minerals, inorganic salts, total dissolved solids or other items. Removal Of Unwanted Solids Suspended solids may be removed by clarification-filtration processes. These processes can produce ...
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Microbial contamination in groundwater supply in a cold climate and coarse soil: case study of norovirus outbreak at Lake Mývatn, Iceland
This paper explores the fate and transport of microbial contamination in a cold climate and coarse aquifers. A confirmed norovirus outbreak in a small rural water supply in the late summer of 2004, which is estimated to have infected over 100 people, is used as a case study. A septic system, 80 m upstream of the water intake, is considered to have contaminated drinking water. Water samples ...
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Drinking water treatment technologies in Europe: state of the art – challenges – research needs
Eureau is the European Federation of National Associations of Water and Wastewater Services. At the request of Eureau Commission 1, dealing with drinking water, a survey was produced focusing on raw drinking water sources and drinking water treatment technologies applied in Europe. Raw water sources concerned groundwater, surface water, surface water with artificial recharge and river bank ...
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