Navigation Links
Chloride found at levels that can harm aquatic life in urban streams of the Northern US
Date:9/16/2009

Levels of chloride, a component of salt, are elevated in many urban streams and groundwater across the northern U.S., according to a new government study.

Chloride levels above the recommended federal criteria set to protect aquatic life were found in more than 40 percent of urban streams tested. The study was released today by the U.S. Geological Survey (USGS). Elevated chloride can inhibit plant growth, impair reproduction, and reduce the diversity of organisms in streams.

The effect of chloride on drinking-water wells was lower. Scientists found chloride levels greater than federal standards set for human consumption in fewer than 2 percent of drinking-water wells sampled in the USGS study.

Use of salt for deicing roads and parking lots in the winter is a major source of chloride. Other sources include wastewater treatment, septic systems, and farming operations.

"Safe transportation is a top priority of state and local officials when they use road salt. And clearly salt is an effective deicer that prevents accidents, saves lives, and reduces property losses," said Matthew C. Larsen, USGS Associate Director for Water. "These findings are not surprising, but rather remind us of the unintended consequences that salt use for deicing may have on our waters. Transportation officials continue to implement innovative alternatives that reduce salt use without compromising safety."

This comprehensive study examines chloride concentrations in the northern U.S. covering parts of 19 States, including 1,329 wells and 100 streams.

Selected Highlights

Land use matters

Chloride yields (the amount of chloride delivered per square mile of drainage area) were substantially higher in cities than in farmlands and forests. Urban streams carried 88 tons of chloride per square mile of drainage area. Forest streams carried about 6 tons of chloride per square mile.

Only 4 percent of the
'/>"/>

Contact: John Mullaney
jmullane@usgs.gov
860-291-6760
United States Geological Survey
Source:Eurekalert

Page: 1 2

Related biology news :

1. Exotic timber plantations found to use more than twice the water of native forests
2. Anticancer compound found in American mayapple
3. Shifting baselines confound river restoration
4. NTU and Temasek Foundation transfer technology knowhow to Chinas quake-prone regions
5. Newly found DNA catalysts cleave DNA with water molecule
6. Essential nutrient found in eggs may help lower risk of neural tube defects
7. Little-known protein found to be key player
8. 121 breeding tigers estimated to be found in Nepal
9. Possible drug target found for one of the most aggressive breast cancers
10. Will IVF work for a particular patient? The answer may be found in her blood
11. UTSA wins San Antonio Area Foundation grant to further chlamydia research
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:1/22/2015)... , Jan. 13, 2015 Technology Showcase, Hall E ... identity authentication solutions, today announced it will showcase its EyeLock ... developed by the Department of Energy,s Oak Ridge National ... Auto Show . EyeLock,s iris identity authentication technology is being ...
(Date:1/22/2015)... NXTD and NXTDW) a biometric authentication company focused on ... Wocket™ smart wallet at CES 2015 in Las Vegas ... the "11 Hot Products at CES" in a review published in Wired.com, ... Newseveryday.com and "The top 10 gadgets from CES 2015" by Danny ...
(Date:1/22/2015)... , January 22, 2015 , ... year  The European Patent Office to present a video ... British nominations to be featured: Christofer Toumazou and ... former finalists and winners of the Award   Starting ...
Breaking Biology News(10 mins):EyeLock Debuts First Iris Authentication Technology Embedded in 3D Printed Automobile 2EyeLock Debuts First Iris Authentication Technology Embedded in 3D Printed Automobile 3CES Response for NXT-ID's Wocket Smart Wallet Kicks Off 2015 2CES Response for NXT-ID's Wocket Smart Wallet Kicks Off 2015 3Ten Years of the European Inventor Award: A Retrospective Look at the Inventors and Ideas That Have Changed Our Lives 2Ten Years of the European Inventor Award: A Retrospective Look at the Inventors and Ideas That Have Changed Our Lives 3
... as a folk remedy, but now scientists from Britain and ... as a treatment for herpes. The team,s findings, published in ... between two teams to established scientific evidence for traditional medicines. ... across mainland Europe and Asia. From the Middle Ages onwards ...
... OAK RIDGE, Tenn, Feb. 22, 2011 -- A theoretical ... National Laboratory is bringing supercomputer simulations and experimental results ... ORNL,s Jeremy Smith collaborated on devising a method -- ... experiments and computer simulations to strengthen analyses of molecules ...
... Conservation Society (WCS) working in conjunction with the Turtle ... from around the world some of which currently ... hunting for both food and the pet trade along ... in the next decade unless drastic conservation measures are ...
Cached Biology News:Old folk remedy revived: How tansy may be a treatment for herpes 2'Fingerprints' match molecular simulations with reality 2Shellshock: New report lists 25 most endangered turtle species 2
(Date:1/23/2015)... MD (PRWEB) January 23, 2015 Portal ... modern digital workplaces on Microsoft Office 365 and SharePoint ... Future 50 Award program for being one of the region’s ... revenue and employee growth. , “To be recognized a ...
(Date:1/22/2015)... BOSTON , Jan. 22, 2015  Transwestern | RBJ today ... feet of office space for Shire a leading biopharmaceutical company, ... . Transwestern | RBJ,s Robert Richards , president, and ... the lease for the entire five-floor building at 95 Hayden ...
(Date:1/22/2015)... Diego, California (PRWEB) January 22, 2015 ... Promotional Offer to their comprehensive portfolio of Eppendorf ... allows customers to purchase a Centrifuge 5424/5424 R and ... Bundle of either Eppendorf Research plus or Eppendorf Reference ...
(Date:1/22/2015)... NJ (PRWEB) January 22, 2015 ... technologies such as the Bioruptor® and complete solutions ... system for chromatin immunoprecipitation, alleviating the need for ... and controls needed for ChIP of histones or ...
Breaking Biology Technology:Washington SmartCEO Announces Portal Solutions as 2015 Future 50 Award Winner Second Year in a Row 2Washington SmartCEO Announces Portal Solutions as 2015 Future 50 Award Winner Second Year in a Row 3Transwestern?RBJ Advises Shire in 202,000 SF Lease, Creating Boston's Largest Suburban Biotech Campus 2Eppendorf Announces Promotional Bundle Which Includes: Eppendorf Centrifuge 5424, 3-Pack of Pipettes, and Tips - Available Now at Pipette.com 2Diagenode Launches Unique Semi-Automated Solution for Chromatin Immunoprecipitation 2
... PMA Study, FORT LAUDERDALE, Fla., April 23 ... announced that on,April 16, 2008, the Company received ... Jay Bendis, Patrick Gorman, and Sherman Lazrus.,These resignations ... outside,funding sources as a condition to such funding. ...
... Paraplatin Will Become the, Clinical Gold Standard Treatment by 2011, ... ... Resources, WALTHAM, Mass., April 23 Decision Resources, one of ... finds that surveyed oncologists say that a therapy,s,effect on overall survival ...
... Ceregene, Inc., a biopharmaceutical,company, today announced that ... management,team. Maurice Mezzino has been hired to the ... Loewen-Rodriguez joins the company as,senior director, regulatory affairs. ... commercial activities as Ceregene transitions to a,later stage ...
Cached Biology Technology:Imaging Diagnostic Systems Accepts Resignations of Outside Directors 2Imaging Diagnostic Systems Accepts Resignations of Outside Directors 3Avastin Used in Combination with Drugs from Bristol-Myers Squibb Has Advantages in Survival Rates Over the Current Sales-Leading Therapy for Advanced Ovarian Cancer 2Avastin Used in Combination with Drugs from Bristol-Myers Squibb Has Advantages in Survival Rates Over the Current Sales-Leading Therapy for Advanced Ovarian Cancer 3Ceregene Announces Two Key Additions to Leadership Team 2Ceregene Announces Two Key Additions to Leadership Team 3
Mouse Anti-Amyloid beta [1-16], clone 6E10, Monoclonal Antibody...
... Development kit contains the basic components required ... measure natural and recombinant mouse Dickkopf homolog-1 ... Each kit contains sufficient materials to run ... that the following conditions are met: ...
HES-1 [Hairy 1], Available Summer 2003...
E1A (adenovirus early region 1)...
Biology Products: