ABOUT

Smart discussion of the latest science and news on toxins in your food, water, and air, and what government agencies should be doing to protect public health. Written by EWG staff.

DONATE TO EWG!

Help us protect your health and environment!  Please donate $5 to EWG today.

GET EWG'S TIPS & ACTION ALERTS

Sign Up here to receive email updates and tips from EWG and stay informed on the issues that matter most to you.

ENVIROBLOG VIA EMAIL

Delivered by FeedBurner

 Enviroblog in your Reader

Get EWG widgets & blog badges.

Join EWG's live chat with Chef Ann Cooper

School lunch: More fruits & veggies, please!

Texas Schools are Drilling for Dollars

Why do blowouts take so long to fix?

SEARCH ENVIROBLOG

FIND PAST POSTS

select month November 2010 October 2010 September 2010 August 2010 July 2010 June 2010 May 2010 April 2010 March 2010 February 2010 January 2010 December 2009 November 2009 October 2009 September 2009 August 2009 July 2009 June 2009 May 2009 April 2009 March 2009 February 2009 January 2009 December 2008 November 2008 October 2008 September 2008 August 2008 July 2008 June 2008 May 2008 April 2008 March 2008 February 2008 January 2008 December 2007 November 2007 October 2007 September 2007 August 2007 July 2007 June 2007 May 2007 April 2007 March 2007 February 2007 January 2007 December 2006 November 2006 October 2006 September 2006 August 2006 July 2006 June 2006 May 2006 April 2006 March 2006 February 2006 January 2006 December 2005 November 2005 October 2005 September 2005 August 2005 July 2005 June 2005 May 2005 April 2005 March 2005 February 2005 January 2005 December 2004 November 2004 October 2004 September 2004 August 2004 July 2004 June 2004 May 2004 April 2004

FEATURED

Support the 2010 Safe Cosmetics Act. It's Urgent.

Why, oh why is there plastic in my aluminum water bottle?

Cell phone radiation series - Part 2: 8 Ways to reduce your exposure

So what products CAN we use?

Test Your Knowledge of Cosmetics Safety: 8 Myths Debunked

EWG's Tips for Parents: The Series

EWG's Tips to avoid BPA exposure

EWG on TV

Cutting the Pork from U.S. Farm Bill

Toxic Tub?

Sunscreen safety & DC drinking water

Perchlorate in people, kids' personal care products & plastics, and sunscreen

BPA in baby formula & safe cosmetics

Ask EWG

What can I do about fluoride in my water?

What is new carpet treated with? What can I do?

What is "fragrance"?

Which infant formula is best?

Are stainless steel water bottles safe?

Is mineral-based makeup safer?

Ask EWG Archives

PEOPLE TALKING TOXICS

Breast Cancer Fund

The Daily Green

Eco Child's Play

Environmental Defense Fund

Green Moms Carnival

Grist

Healthy Child, Healthy World

Huffington Post Green

NRDC's Switchboard

Organic.org

Safer States

TreeHugger

TALK TO US

Did we miss something? Email Enviroblog.

« EPA Suppresses Inconvenient Study in Critical Mercury Decision | Main | NIH Cracks Down on Scientists' Conflicts of Interest »

California Affirms Low Limit of Rocket Fuel in Water Supplies

California will keep its recommendation for the legal limit of the toxic rocket fuel chemical perchlorate in drinking water at 6 parts per billion (ppb), despite EPA levels set over four times higher, the Riverside Press-Enterprise reports. California’s level takes into account rocket fuel exposure from multiple sources, including milk, lettuce and other foods. It was adjusted to protect the most sensitive populations, including pregnant mothers, infants and children.

California’s goal is not currently mandatory, but the state’s Department of Health Services is expected to set a legal maximum contamination level in the next few months. Canada and Massachusetts have also chosen stricter guidelines for rocket fuel contamination, which seeps into water and food primarily from spills and leaks at defense contractors’ and other industries’ factories.

EPA ratcheted its limit up to 24.5 ppb – more than 20 times higher than the preliminary safe level of 1 ppb it set in 2002 – based on January findings from the National Academy of Sciences (NAS) that its panel members said were widely misinterpreted. The NAS panel set a reference dose, or a safe amount per unit of body weight, which measures the safe level from all exposure sources. That’s not the same as a drinking water standard, which has to be stricter because a person can be exposed to perchlorate through other sources, such as food.

And because drinking water isn’t the only source of exposure to rocket fuel, setting the drinking water standard at the reference dose will lead to higher levels of the chemical in humans than NAS found to be safe.

Fetuses, infants and children are particularly at risk from rocket fuel contamination not just because of their lower body weights, but also from breastfeeding. A Texas Tech study released in February found rocket fuel in every sample of breast milk taken from 36 women across the country. The chemical, which has also been found in cow’s milk and lettuce, inhibits the thyroid gland’s ability to regulate hormones that govern brain and nervous system development.

View EWG’s most recent updates on rocket fuel contamination in milk and water.

« EPA Suppresses Inconvenient Study in Critical Mercury Decision |