[Parameters: Topic='TERRESTRIAL HYDROSPHERE', Term='GROUND WATER', Variable_Level_1='GROUNDWATER CHEMISTRY']
Arsenic in ground water of the United StatesEntry ID: USGS_ARSENIC_H2O
Abstract: [From Arsenic in ground water of the United States,
Arsenic is a naturally occurring element in the environment. Arsenic in ground
water is largely the result of minerals dissolving naturally from weathered
rocks and soils. Several types of cancer have been linked to arsenic in water.
The US Environmental Protection Agency is currently reviewing the maximum
contaminant level of arsenic permitted in drinking water, and will likely lower
it, as recommended last year by the National Research Council.
The USGS has developed a map that shows where and to what extent arsenic occurs
in ground water across the country. Highest concentrations were found
throughout the West and in parts of the Midwest and Northeast.
Data Set Citation
Dataset Originator/Creator: Focazio, M.J., Welch, A.H., Watkins, S.A., Helsel, D.R., and Horn, M.A.
Dataset Title: A retrospective analysis on the occurrence of arsenic in ground- water resources of the United States and limitations in drinking-water-supply characterizations
Dataset Series Name: U.S. Geological Survey Water-Resources Investigations Report
Dataset Release Date: 1999
Dataset Publisher: U.S. Geological Survey
Issue Identification: 99-4279
Data Presentation Form: TAB-delimited ASCII textOnline Resource: http://water.usgs.gov/nawqa/trace/data/arsenic_may2000.txt
Start Date: 1973-01-01Stop Date: 1997-01-01
Access Constraints None
Use Constraints Please cite data.
Data Set Progress
Distribution Media: Online Internet (HTTP)
Distribution Size: 1,130 Kbytes
Distribution Format: Tab-delimited text file
Role: TECHNICAL CONTACT
Phone: (303) 236-5340
Fax: (303) 236-1425
Email: dhelsel at usgs.gov
National Water-Quality Assessment U.S. Geological Survey Box 25046, MS 415 Denver Federal Center
Province or State: CO
Postal Code: 80225-0046
Role: DIF AUTHOR
Email: gsfc-gcmduso at mail.nasa.gov
Welch, A.H., Watkins, S.A., Helsel, D.R., and Focazio, M.F., 2000, Arsenic in
ground-water resources of the United States: U.S. Geological Survey Fact Sheet
Creation and Review Dates
DIF Creation Date: 2000-07-27
Last DIF Revision Date: 2008-05-30