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 Welcome to Perchlorate News.com, an online newsletter with up-to-the-minute news and information about the treatment of Perchlorate contamination in water. Perchlorate (ClO4-) is an anion that originates as a contaminant in ground water and surface waters from the dissolution of ammonium, potassium, magnesium, or sodium salts. There have been large volumes of perchlorate being disposed of since the 1950's and perchlorate has been detected in at least 14 states, every state having a confirmed perchlorate manufacturer or user. In 2001 the EPA began requirement for monitoring this contaminant in the nation's drinking water and in 2002 the US EPA submitted a proposed reference dose of 1 part-per-billion (ppb) for perchlorate in drinking water based on perceived changes in infant rat brain structure at a dose equivalent to 300 ppb for a 150 pound human adult or as low as 45 ppb for a bottle-fed infant. Regulatory pressures to reduce perchlorate concentrations in surface and ground water have been increasing. The EPA has set a provisional action level for drinking water of 32 µg/L (ppb) and more states have also established provisional levels, including California, Texas, Nevada and Arizona, with those of California and Nevada currently the most stringent, at 18 µg/L (ppb). Click here for the latest developments in perchlorate contamination treatment, or click here to view perchlorate case studies. |
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 THE LATEST NEWS: ARLINGTON, VA, October 12, 2004 -- The Department of Defense, through the Environmental Security Technology Certification Program (ESTCP), will be funding demonstration projects for treatment of perchlorate in drinking water. [More...] 
SAN BERNARDINO, C.A., March 16, 2003 -- Cleaning up the seven-mile long plume of perchlorate, a chemical linked to thyroid disorders that has contaminated at least 235 private drinking water wells in southern Santa Clara County, can be done, experts say.[More...] 
LOS ALAMOS, N.M., July 29, 2002 -- Personnel at the U.S. Department of Energy's Los Alamos National Laboratory have successfully demonstrated the effectiveness of a new system that removes nearly all perchlorate from wastewater discharges.[More...] 
January 25, 2002 -
A long-awaited U.S. EPA draft toxicological report issued on January 18 finds that perchlorate is likely to be more harmful to human health than previously thought. In response to the report's conclusion that perchlorate concentrations of less than 1 part per billion (ppb) are safe for human consumption in drinking water, the California Department of Health reduced its advisory action level from 18 ppb to 4 ppb. The state, which is currently in the process of setting its own drinking water standard, is one of the southwestern states most affected by perchlorate-contaminated groundwater. [More...] |
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About Perchlorate | Recent Cases Involving Perchlorate | Perchlorate News and Notes | Related Links About Perchlorate and Treatment | Contact Perchlorate News Ground-Water Remediation Technologies Analysis Center ©2001 GWRTAC The Perchlorate News Web Site is brought to you by: Calgon Carbon Corporation, 400 Calgon Carbon Drive, Pittsburgh, PA 15205. Phone: (412) 787-6700, 1-800-422-7266 Use of this site signifies your acceptance of Calgon Carbon Corporation's Website Terms and Conditions and Privacy Policy. © 2003 Calgon Carbon Corporation. All Rights Reserved. |
