Perchlorate comparison

[Lenny Siegel <lsiegel@cpeo.org>]

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Chemical confusion
Perchlorate 'danger' levels vary by state 

By VANESSA HUGHES
Lowell Sun 
September 1, 2004

Wednesday, September 01, 2004 - Tewksbury residents learned their
drinking water contained traces of perchlorate when tests confirmed
levels above 1 part per billion a level at which the state recommends
issuing a health advisory to sensitive residents.

Maryland and New Mexico use the same guideline. But in Nevada, the
advised perchlorate limit is 18 ppb. New York issues advisories when
levels are 5 ppb to 18 ppb, and Arizona uses a health-based guidance
level of 14 ppb. 

In California, where perchlorate contamination is widespread, a public
health goal strives to have no more than 6 ppb in drinking water if
feasible, but does not consider the amount to pose a significant health risk.

Some states recommend varying levels for action, for cleanup and for
public notice. Most have no guidelines, and established guidelines are
inconsistent. 

...

for the entire article, see
http://www.lowellsun.com/Stories/0,1413,105~4746~2373271,00.html



-- 


Lenny Siegel
Director, Center for Public Environmental Oversight
c/o PSC, 278-A Hope St., Mountain View, CA 94041
Voice: 650/961-8918 or 650/969-1545
Fax: 650/961-8918
<lsiegel@cpeo.org>
http://www.cpeo.org

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