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California Adopts Perchlorate Standard(Archive News Story - Products mentioned in this Archive News Story may or may not be available from the manufacturer.) American Water Works Association Release date: September 22, 2007
As expected, California has adopted a drinking water standard for perchlorate of 6 micrograms/L, equal to the public health goal that was set in large part to protect fetuses of women with hypothyroidism or iodide deficiencies.
Effective Oct. 18, the new perchlorate standard is the second set by a state for the rocket fuel chemical (Massachusetts set a standard of 2 micrograms/L in 2006) that has turned up in water supplies and food products in the past several years. Perchlorate's primary health effect is that it interferes with iodide uptake by the thyroid, which can decrease production of hormones essential for prenatal and postnatal growth and development.
USEPA in 2005 set an official perchlorate reference dose of 0.0007 mg/kg/day, which equates to a drinking water equivalent level of 24.5 mg/L and is awaiting additional food and human exposure data before determining whether to regulate the contaminant.
In its preliminary determination in May on whether to regulate perchlorate and other contaminants on the second Contaminant Candidate List, the agency identified 11 chemicals that don't need to be regulated. Regarding perchlorate, USEPA said it "believes additional information may be needed to more fully characterize perchlorate exposure and determine whether it is appropriate to regulate perchlorate in drinking water (i.e., whether setting a national primary drinking water standard would provide a meaningful opportunity to reduce risk for people served by public water systems)."
A final determination is expected in early 2008.
Company Information:
Name: American Water Works Association
Address: 6666 W. Quincy Ave
City: Denver
State: CO
ZIP: 80235
Country: USA
Phone: 303-794-7711
http://www.awwa.org
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