Navigation Links
Contaminants in groundwater used for public supply
Date:5/21/2010

More than 20 percent of untreated water samples from 932 public wells across the nation contained at least one contaminant at levels of potential health concern, according to a new study by the U.S. Geological Survey.

About 105 million people or more than one-third of the nation's population receive their drinking water from one of the 140,000 public water systems across the United States that rely on groundwater pumped from public wells

The USGS study focused primarily on source (untreated) water collected from public wells before treatment or blending rather than the finished (treated) drinking water that water utilities deliver to their customers.

"By focusing primarily on source-water quality, and by testing for many contaminants that are not regulated in drinking water, this USGS study complements the extensive monitoring of public water systems that is routinely conducted for regulatory and compliance purposes by federal, state and local drinking-water programs," said Matthew C. Larsen, USGS Associate Director for Water. "Findings assist water utility managers and regulators in making decisions about future monitoring needs and drinking-water issues."

Findings showed that naturally occurring contaminants, such as radon and arsenic, accounted for about three-quarters of contaminant concentrations greater than human-health benchmarks in untreated source water. Naturally occurring contaminants are mostly derived from the natural geologic materials that make up the aquifers from which well water is withdrawn.

Man-made contaminants were also found in untreated water sampled from the public wells, including herbicides, insecticides, solvents, disinfection by-products, nitrate, and gasoline chemicals. Man-made contaminants accounted for about one-quarter of contaminant concentrations greater than human-health benchmarks, but were detected in 64 percent of the samples, predominantly in samples from unconfined aquife
'/>"/>

Contact: Kara Capelli
kcapelli@usgs.gov
571-230-6601
United States Geological Survey
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Bioavailable contaminants come from the Exxon Valdez oil catastrophe
2. NOAA reports coastal waters show decline in contaminants
3. Scientists discover how nanocluster contaminants increase risk of spreading
4. Turtle studies suggest health risks from environmental contaminants
5. Stanford scientists track polluted groundwater to the sea
6. Microorganisms in toxic groundwater fine-tuned to survive
7. Lehigh University professor receives Astellas Award for arsenic groundwater remediation efforts
8. Geologists studying groundwater arsenic levels in India empower Bengali women, children
9. Hot microbes cause groundwater cleanup rethink
10. U of T technique put to use to test clean up of contaminated groundwater
11. Scientists from the UGR prove that rivers do not act as barriers for groundwater flow
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/10/2014)... Interdisciplinary Research (MIIR) and the Marshall University Joan ... will be partnering with an international biosciences company ... agreement with Shanghai-based HD Biosciences Co. Ltd., the ... of discovery and development of these new drugs. ... and commercialization rights to products developed through the ...
(Date:7/10/2014)... around a family of enzymes known as heme enzymes, ... their active site. At the centre of the heme ... (ferryl) when a reacting heme is in an intermediate ... unanswered for decades is whether this oxidation involves just ... Resolving this fundamental question has implications for understanding oxidative ...
(Date:7/10/2014)... Geostationary Operational Environmental Satellite or GOES-West satellite spotted ... fires raging in Canada,s Northwestern Territories. , At ... 2014, GOES-West captured this image of the brownish-colored ... Territories that drifted all the way into South ... GOES Project at NASA Goddard Space Flight Center, ...
Breaking Biology News(10 mins):Marshall University to partner with international company in drug development venture 2Neutron crystallography solves long-standing biological mystery 2Neutron crystallography solves long-standing biological mystery 3
... Soldiers in war zones and farmers tending their fields ... their nerves. In large doses these agents, called organophosphates, ... also produce chronic disabilities such as problems with learning and ... Jr., pharmacologist at the Medical College of Georgia at Georgia ...
... are human rights. Yet almost 780 million of the ... and some 2.6 billion people live without sanitary facilities. ... agricultural and manufacturing businesses already use up more than ... for water continues to rise. The Organization for Economic ...
... people to punish others who lie, cheat, steal or violate ... stand to benefit personally, is a distinctly human behavior. There ... in this "I punish you because you harmed him" fashion. ... been institutionalized in human legal systems and economists have identified ...
Cached Biology News:Effect of chronic exposure to chemicals used as weapons, pesticides under study 2Effect of chronic exposure to chemicals used as weapons, pesticides under study 3Use less water, producing energy and fertilizer at the same time 2Use less water, producing energy and fertilizer at the same time 3Crime and punishment: The neurobiological roots of modern justice 2Crime and punishment: The neurobiological roots of modern justice 3Crime and punishment: The neurobiological roots of modern justice 4Crime and punishment: The neurobiological roots of modern justice 5
(Date:7/10/2014)... Hall effect in bilayer graphene and shown that this ... electric field. , The fractional quantum Hall effect, ... are exposed to large magnetic fields, is a striking ... behave as a single system. However, while the basic ... of this collective behavior remain not well understood, in ...
(Date:7/10/2014)... out for crude 3-D glasses, polarized glasses, and ... basic devices, used to trick the brain into ... rendered obsolete with the introduction of new holography ... TAU doctoral students Yuval Yifat, Michal Eitan, and ... on nanoantennas that could be used for security ...
(Date:1/15/2014)... assembling a club sandwich at the nanoscale, National ... succeeded in crafting a uniform, multi-walled carbon-nanotube-based coating ... used in upholstered furniture and other soft furnishings. ... was reduced 35 percent compared with untreated foam. ...
(Date:1/15/2014)... PA (PRWEB) January 15, 2014 The Pittcon ... publisher of Food Safety Tech , an e-Journal and ... signed an agreement for the second year for the co-location ... Pittcon 2014. The partnership provides that the registration fee to ...
Breaking Biology Technology:Columbia researchers observe tunable quantum behavior in bilayer graphene 2Columbia researchers observe tunable quantum behavior in bilayer graphene 3Projecting a 3-dimensional future 2Projecting a 3-dimensional future 3Layered security: Carbon nanotubes promise improved flame-resistant coating 2Pittcon Announces Second Year Partnership With Food Safety Tech 2Pittcon Announces Second Year Partnership With Food Safety Tech 3
... The Center for Advanced Technology and Innovation , ... breath commercial life into unused and underused technologies, is ... , ,If successful at facilitating the launch of new ... development in Wisconsin and elsewhere while building connections for ...
... - State Senator Ted Kanavas , R-Brookfield, ... defying a federal law to suspend taxation on Internet access, ... the state is in compliance with the law. , ... the Internet Nondiscrimination Act of 2004. According to Kanavas, the ...
... - When it comes to reporting lost mobile data ... ,By now, most technologically savvy people have heard the ... reported lost or stolen from entities like the ... the data encryption software developer, more than 85,000 cell ...
Cached Biology Technology:CATI takes tech transfer model national 2CATI takes tech transfer model national 3Kanavas rips Doyle for taxing Internet 2Security concerns grow with mobile tech devices 2Security concerns grow with mobile tech devices 3Security concerns grow with mobile tech devices 4Security concerns grow with mobile tech devices 5
We offer solid and solution phase peptide synthesis including a whole range of modifications. Please send the details of your peptide synthesis need to info@rpeptide.com...
Maxi 14 Hybridization Oven. 14 bottle (35 mm) rotisserie + shaker tray available for simultaneous use. Includes linear and orbital shaker trays, 4 medium bottles, pack of mesh, bottle gripper and d...
Request Info...
Request Info...
Biology Products: