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

rs.

"Detections of contaminants do not necessarily indicate a concern for human health because USGS analytical methods can detect many contaminants at concentrations that are 100-fold to 1,000-fold lower than human-health benchmarks," said lead scientist Patricia Toccalino. "Assessing contaminants in these small amounts helps to track emerging issues in our water resources and to identify contaminants that may warrant inclusion in future monitoring."

Scientists tested water samples for 337 properties and chemical contaminants, including nutrients, radionuclides, trace elements, pesticides, solvents, gasoline hydrocarbons, disinfection by-products and manufacturing additives. This study did not assess pharmaceuticals or hormones.

Most (279) of the contaminants analyzed in this study are not federally regulated in finished drinking water under the Safe Drinking Water Act.

The USGS also sampled paired source and finished (treated) water from a smaller subset of 94 public wells. Findings showed that many man-made organic contaminants detected in source water generally were detected in finished water at similar concentrations. Organic contaminants detected in both treated and source water typically were detected at concentrations well below human-health benchmarks, however.

Additionally, the study shows that contaminants found in public wells usually co-occurred with other contaminants as mixtures. Mixtures can be a concern because the total combined toxicity of contaminants in water may be greater than that of any single contaminant. Mixtures of contaminants with concentrations approaching benchmarks were found in 84 percent of wells, but mixtures of contaminants above health benchmarks were found less frequently, in 4 percent of wells.

This USGS study identifies which contaminant mixtures may be of most concern in groundwater used for public-water supply and can help human-health researchers to target and prioritize
'/>"/>

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:5/22/2015)... , May 22, 2015  NXT-ID, Inc. (NASDAQ: NXTD ... it will be ending its promotional pricing and making the ... Laurence Savin , Head of Marketing said, "We,ve ... pricing until the end of May. To get your wocket ... when we open the store on June 1, you,ll receive ...
(Date:5/21/2015)... -- The Sync Project™ , a global collaboration ... announced a collaborative partnership with Berklee,s Institute for ... collaboration on original research, joint course development and an ... The Sync Project and BerkleeICE are exploring the launch ... 2015-2016 academic year.  The course will ...
(Date:5/19/2015)... , May 18, 2015 Fingerprint ... sensors FPC1020, FPC1025, FPC1145, FPC1155 and FPC1035 from one if ... June until and including Q3 2015 and the sensors will ... . Communicated order values for 2015 hereby amount to 740 ... Q1 2015 of 140 MSEK and a number of smaller ...
Breaking Biology News(10 mins):NXT-ID, Inc Announces Retail Price For Wocket Smart Wallet And Extends Discounted Promotional Price Till End Of May 2NXT-ID, Inc Announces Retail Price For Wocket Smart Wallet And Extends Discounted Promotional Price Till End Of May 3The Sync Project Announces Partnership with Berklee College of Music's Institute for Creative Entrepreneurship 2The Sync Project Announces Partnership with Berklee College of Music's Institute for Creative Entrepreneurship 3Fingerprint Cards Receives Touch Fingerprint Sensor Order of SEK 230 Million and Raises Revenue Guidance for 2015 2
... Genetic instructions for developing limbs and digits were present ... first crawled on to land, researchers have discovered. ... activity. When a particular switch taken from fish DNA ... genes in the developing limb region of embryos, University ...
... University Hospital and the University of Copenhagen have ... the immune defences of expectant mothers, allowing the parasite ... part of the efforts researchers are making to understand ... Staff member at CMP. Photo: Lars Hviid"We have ...
... need to be carefully planned, taking into account the ... them from one home to another sometimes hundreds of ... journal Oecologia sheds new light on the dispersal of ... the effective design of marine protected areas (MPAs), a ...
Cached Biology News:Genetic switch for limbs and digits found in ancient fish 2Genetic switch for limbs and digits found in ancient fish 3Malaria parasites use camouflage to trick immune defences of pregnant women 2Data revealing migrations of larval reef fish vital for designing networks of marine protected areas 2
(Date:5/21/2015)... May 21, 2015 Specialty Pharmacy ... and been admitted to BPA Worldwide as a ... will track audience data for Specialty Pharmacy Times ... , “By becoming a member of BPA Worldwide, ... providing our clients with the most reliable, unequaled ...
(Date:5/21/2015)... Calif. , May 21, 2015  The ... Orrin Hatch (R-UT) and Amy Klobuchar ... Extensions Now Accelerating Cures & Treatments, or OPEN ... rare disease patient advocacy organizations, this bipartisan legislation ... and affordable medicines to rare disease patients by ...
(Date:5/21/2015)... , May 21, 2015  CytRx Corporation ... development company specializing in oncology, today announced positive ... trial with aldoxorubicin for the treatment of unresectable ... cancer.  The open-label, multisite trial is designed to ... in patients whose tumors have progressed following prior ...
(Date:5/21/2015)... Veolia’s environmental monitoring technology division, ... distribution agreement with VWR to distribute TECTA™ B16, ... than 160 years of experience, VWR, a leading ... and production facilities, has cultivated a value proposition ... to enable science. Endetec’s TECTA™ B16, combines ...
Breaking Biology Technology:Specialty Pharmacy Times Joins BPA Worldwide 2Advocates Cheer Senate Leaders for Introducing Bipartisan Bill to Increase Number of Rare Disease Treatments 2CytRx Reports Positive Updated Phase 2 Aldoxorubicin Clinical Trial Results in Glioblastoma Multiforme (Brain Cancer) 2CytRx Reports Positive Updated Phase 2 Aldoxorubicin Clinical Trial Results in Glioblastoma Multiforme (Brain Cancer) 3CytRx Reports Positive Updated Phase 2 Aldoxorubicin Clinical Trial Results in Glioblastoma Multiforme (Brain Cancer) 4CytRx Reports Positive Updated Phase 2 Aldoxorubicin Clinical Trial Results in Glioblastoma Multiforme (Brain Cancer) 5CytRx Reports Positive Updated Phase 2 Aldoxorubicin Clinical Trial Results in Glioblastoma Multiforme (Brain Cancer) 6CytRx Reports Positive Updated Phase 2 Aldoxorubicin Clinical Trial Results in Glioblastoma Multiforme (Brain Cancer) 7Veolia’s TECTA™ B16 Instrument for E. Coli Detection is Offered Exclusively Through VWR 2
... WEST LAFAYETTE, Ind. - Researchers are adapting the same ... plasma beams for a new class of "nanolithography" required ... ultraviolet light to create the fine features in computer ... the image of a mask onto a light-sensitive material, ...
... NEW YORK, Aug. 18 /PRNewswire-Asia-FirstCall/ -- American Oriental,Bioengineering, Inc. ... a pharmaceutical,company dedicated to improving health through the development, ... over the counter ("OTC"),products in China, today announced that ... Spray, were awarded the designation of "China,s Top,Branded Drugs ...
... , CANTON, Mass., Aug. 18 Small and ... costs to stay profitable in this economy. EquipNet is announcing ... on processing and packaging equipment from a leading pharmaceutical manufacturer. ... for Thursday, August 27 at 11am. Enthusiastic bargain hunters can ...
Cached Biology Technology:Nuclear fusion research key to advancing computer chips 2Nuclear fusion research key to advancing computer chips 3American Oriental Bioengineering's 'Jinji Capsules' and 'Boke Nasal Spray' Designated Among 'China's Top Branded Drugs of 2009' 2American Oriental Bioengineering's 'Jinji Capsules' and 'Boke Nasal Spray' Designated Among 'China's Top Branded Drugs of 2009' 3Pre-Owned Prices on Premium Pharmaceutical Equipment 2
Purified Mouse anti-Hu p120 Catenin (pT916) Storage Temperature: Refrigerate(2 to 8C)...
Request Info...
ROCK-1 (cleaved) Monoclonal Ab 100 ug purified mouse monoclonal antibody. Clone# 12M03. Reacts with human. Tested in Western blot analysis....
Anti-Cullin-1 Host: rabbit polyclonal Species Reactivity: human, mouse Applications: IHC(P), WB, IP Storage: 4C...
Biology Products: