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:2/19/2015)... DUBLIN , Feb .19, 2015 Research ... announced the addition of the "Military Electro-Optical ... by Sensor Technology, by Platform - Forecast to ... The military electro-optical/infrared systems market is expected ... a CAGR of 7.71%. This report ...
(Date:2/13/2015)... , Feb. 13, 2015 ACT ... company that aims to transform cancer genomic information ... that the company has raised US$ 8 million in ... Based in Taipei, Taiwan , ... ACTDrug™, ACTOnco™. With the aim to implement next ...
(Date:2/12/2015)... , Feb. 12, 2015 NXT-ID, Inc. ... the "Company"), a biometric authentication company focused on the ... filed provisional patent 62/113114 for DISTRIBUTED METHOD ... The patent further establishes NXT-ID,s position in ... intellectual property portfolio the ability for multiple devices to ...
Breaking Biology News(10 mins):Military Electro-Optical / Infrared Systems (Image Intensification, Laser, Infrared) Market - Forecast to 2020: Featuring Profiles of the Market Leaders on this $16 Billion market 2Military Electro-Optical / Infrared Systems (Image Intensification, Laser, Infrared) Market - Forecast to 2020: Featuring Profiles of the Market Leaders on this $16 Billion market 3ACT Genomics Raises $8 Million in its First Private Funding Round 2NXT-ID Patents Collaborative Services to Enable the "Internet of Things" 2NXT-ID Patents Collaborative Services to Enable the "Internet of Things" 3
... States have suggested an alternative way to allocate science ... reports , depends on a collective distribution of funding ... the costs associated with the traditional peer review of ... comparable or even better results. "Peer review ...
... New research published in the November issue of Nutrition ... a lunch may have helped healthy, overweight people feel more ... The study was funded by the Hass Avocado Board. ... Evaluate the Effect of Hass Avocado Intake on Post Ingestive ...
... TALLAHASSEE Florida State University researchers have spearheaded a major ... occurs when too many fish are harvested from one habitat. ... ecosystem can have unintended consequences because of the connections between ... often occur rapidly and unexpectedly, and are difficult to reverse. ...
Cached Biology News:Researchers propose alternative way to allocate science funding 2New research: Effects of eating half an avocado with lunch on satiety & desire to eat between meals 2New research study: The snowball effect of overfishing 2
(Date:2/27/2015)... 2015  Steep Hill, the industry leader in cannabis ... to open a full service medical cannabis quality assurance ... bringing advanced scientific tools and methodology to the state, ... is currently the only laboratory licensed by the New ... testing in order to meet the recently adopted regulatory ...
(Date:2/26/2015)... , Feb. 26, 2015  23andMe, the leading personal ... Black as Privacy Officer and Corporate Counsel. Black ... privacy laws as well as health care regulations. As ... will be responsible for reviewing, updating and enhancing the ... U.S. and abroad. She joined the company January 5, ...
(Date:2/26/2015)... MENLO PARK, Calif. , Feb. 26, 2015 /PRNewswire/ ... has released the latest version of the Governance ... organizations accomplish governance, risk and compliance (GRC) tasks across ... has also been updated to help customers better align ... Organizations of the Treadway Commission ) requirements. In response ...
(Date:2/26/2015)...  NuGene International, Inc. ("NuGene") (OTCQB: NUGN), the ... hair rejuvenation, has announced that it has selected ... investor relations and strategic communications. ... diversification strategies – and we need to communicate ... Ali Kharazmi CEO of NuGene when announcing this ...
Breaking Biology Technology:Steep Hill First to Receive Provisional Approval to Establish Laboratory Services for Cannabis Testing in State of New Mexico 223andMe Appoints Kate Black as Privacy Officer and Corporate Counsel 2Protiviti Governance Portal Helps Companies Drive Governance, Risk and Compliance Productivity Across Multiple Business Units 2Protiviti Governance Portal Helps Companies Drive Governance, Risk and Compliance Productivity Across Multiple Business Units 3NuGene International, Inc. Selects Capital Market Relations for Strategic Investor Relations 2NuGene International, Inc. Selects Capital Market Relations for Strategic Investor Relations 3
... measure the ability to tune out negativity, author and ... southeastern Wisconsin technology professionals. , ,Kawasaki, managing partner of ... of the Start" and several other business books, gave ... eInnovate. He poked some good-natured fun at politicians, Microsoft ...
... Standard Networks, Inc., a Madison software developer, achieved ... months of 2006, thanks largely to a 125 percent ... message transfer management products. , ,Citing its privately held ... MOVEit, but said Standard Network's overall revenues increased by ...
... Wis. - In a move to comply with ... Security, an Internet security provider, as a partner in ... union clients. , ,The move comes as financial institutions ... comply with Federal Financial Institutions Examination Council requirements to ...
Cached Biology Technology:Beating back the bozos is an innovation must, says Kawasaki 2
Assay Diluent 500 mls...
Mouse monoclonal [4C4] to Y14 ( Abpromise for all tested applications). entrezGeneID: 9939 SwissProtID: Q9Y5S9...
Tissue-Stat ( Tissue Adherent for Mounting Formalin-Fixed and Frozen Tissue Sections.)...
... as the cellular homolog of the avian sarcoma ... have been shown to be almost identical to ... in dimerization and DNA binding, whereas their N-terminal ... Antigen: The antibody was ...
Biology Products: