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:7/21/2015)... July 21, 2015 Today, ZTE announced its ... as well as expected revenues in 2015 that relate to sales ... revenue guidance of approximately 2,200 MSEK for 2015. Jörgen ... leading smartphone manufacturer in China and we ... 02 5 for Axon , ...
(Date:7/13/2015)... 2015 Synaptics Inc. (NASDAQ: SYNA ... today announced sampling of ClearPad ® 4300, ... (TDDI) product targeting smartphones and tablets. This new ... , best-in-class touch controller IP and systems ... in the company,s Japan Design Center. TDDI enables ...
(Date:7/9/2015)... , July 9, 2015  Unchained Labs ... announcing its acquisition of Avid Nano. Avid Nano ... scattering (DLS) systems.    Also today, ... fastest and easiest to use protein sizing system. ... measures a protein,s hydrodynamic size, size distribution, aggregation ...
Breaking Biology News(10 mins):FPC's Touch Fingerprint Sensor FPC1025 in ZTE's Smartphone Axon 2Synaptics Announces Sampling of Second Generation TDDI Solutions 2Synaptics Announces Sampling of Second Generation TDDI Solutions 3Unchained Labs just can't get enough, acquires Avid Nano, rocks out the new pUNk! 2
... has improved a strain of E. coli, making it grow faster. ... decimate it. "The average person hears E. coli and ... poisoning, but we,ve developed a strain of E. coli that is ... in vaccines or gene therapy," said Yong-Su Jin, a U of ...
... Environmental scientists at Clemson University have received a ... Energy to study how plutonium, a byproduct of used ... implications for nuclear cleanup efforts and could help the ... by long-term nuclear waste disposal. "Plutonium contamination in ...
... A new field study confirms that an invasive ... grass species, suggesting it will continue to spread across ... millions of acres of grazing land almost worthless. ... the Agricultural Research Service, was one of the most ...
Cached Biology News:This faster-growing E. coli strain's a good thing 2Clemson researcher will study plutonium underground for Energy Department 2Invading weed threatens devastation to western rangelands 2Invading weed threatens devastation to western rangelands 3
(Date:8/4/2015)... 2015   California Cryobank Stem Cell Services LLC ... Cryogenics, an east coast cord blood and reproductive tissue ... tristate area. LifeLine clients will maintain full access ... be honored. Since 1991, LifeLine has provided ... sperm, eggs, embryos, and cord blood stem cells. LifeLine Cryogenics ...
(Date:8/3/2015)... , Aug. 3, 2015  ArroGen Group, an ... new Fingerprint Molecular Identification™ (FMID) technology Aug. 2-8 ... in Sacramento, Calif. ... will enable law enforcement agents, district attorneys and ... criminal suspects. By analyzing chemical residues ...
(Date:8/3/2015)... London, UK (PRWEB) , ... August 03, 2015 ... ... largest consumer of benzene. Benzene is processed to get such derivatives as ethylbenzene, ... Ethylbenzene derivatives are principally used within the automotive industry for the production of ...
(Date:8/3/2015)... , Aug. 3, 2015  Aethlon Medical, Inc. (Nasdaq: ... devices to treat life-threatening diseases, today announced that it ... call and webcast on Thursday, August 13, 2015 at ... webcast will follow the release of fiscal 2016 first ... be available approximately two hours after the call at ...
Breaking Biology Technology:FamilyCord Announces Acquisition of LifeLine Cryogenics 2ArroGen Previews New Fingerprint Molecular Identification Technology 2World Benzene Market to Surpass 46 MMT by 2020, According to TechSci Research Report Published at MarketPublishers.com 2World Benzene Market to Surpass 46 MMT by 2020, According to TechSci Research Report Published at MarketPublishers.com 3Aethlon Medical To Host First Quarter Fiscal 2016 Investor Call on August 13, 2015 2
... Alcohol, All-Natural Formula Avoids Pitfalls of Alcohol-Based SanitizersCHARLOTTE, N.C., ... for individuals to feel helpless to protect themselves and ... infection and the spread of illnesses such as Swine ... and rub your hands clean. Remi-D, an all-natural hand ...
... SynCo Bio Partners B.V. (Amsterdam,The Netherlands), the cGMP ... Industry Excellence (ViE) award for,Best Contract Manufacturing Organization (CMO) ... World Vaccine Congress on the 22nd of April and ... and manufacturing,staff on behalf of its clients over the ...
... China-Biotics,Inc. (Nasdaq: CHBT ) ("China-Biotics," "the ... research, development, marketing and,distribution of probiotics products ( ... will present at the upcoming,China Rising Conference hosted ... May 18,2009. , The ...
Cached Biology Technology:Swine Flu a Reminder: Using Hand Sanitizers Like Remi-D Helps Fight Infection 2SynCo Bio Partners Wins Best Contract Manufacturing Organization 2009 ViE Award 2China-Biotics, Inc. to Present at CCG Investor Relations' China Rising Conference 2China-Biotics, Inc. to Present at CCG Investor Relations' China Rising Conference 3
Request Info...
Human RUNX2/CBFA1 MAb (Clone 232902)...
... Streptavidin-Horseradish Peroxidase Conjugate, ... to reporter enzyme molecules ... and in situ hybridization ... Blotting & Labeling & ...
...
Biology Products: