EPA won't limit rocket fuel chemical in water

updated 5:00 p.m. ET Sept. 22, 2008

WASHINGTON - The Environmental Protection Agency has decided there's no need to rid drinking water of a toxic rocket fuel ingredient that has fouled public water supplies around the country.

EPA reached the conclusion in a draft regulatory document not yet made public but reviewed Monday by The Associated Press.

The ingredient, perchlorate, has been found in at least 395 sites in 35 states at high levels that some scientists say could interfere with thyroid function and pose developmental health risks, particularly for babies and fetuses.

The EPA document says that mandating a clean-up level for perchlorate would not result in a "meaningful opportunity for health risk reduction for persons served by public-water systems."

The conclusion, which caps years of dispute over the issue, was denounced by Democrats and environmentalists who accused EPA of caving to pressure from the Pentagon.

"This is a widespread contamination problem, and to see the Bush EPA just walk away is shocking," said Sen. Barbara Boxer, D-Calif., who chairs the Senate's environment committee.

Lenny Siegel, director of the Center for Public Environmental Oversight in Mountain View, Calif., added: "This is an unconscionable decision not based upon science or law but on concern that a more stringent standard could cost the government significantly."

Pentagon could have faced burden
The Defense Department used perchlorate for decades in testing missiles and rockets, and most perchlorate contamination is the result of defense and aerospace activities, congressional investigators said last year.

The Pentagon could face liability if EPA set a national drinking water standard that forced water agencies around the country to undertake costly clean-up efforts. Defense officials have spent years questioning EPA's conclusions about the risks posed by perchlorate.

The Pentagon objected strongly Monday to the suggestion that it sought to influence EPA's decision.

"We have not intervened in any way in EPA's determination not to regulate perchlorate. If you read their determination, that's based on criteria in the Safe Drinking Water Act," Paul Yaroschak, Pentagon deputy director for emerging contaminants, said in an interview.

Yaroschak said the Pentagon has been working for years to clean up perchlorate at its facilities. He also contended that the Pentagon wasn't the source of as much perchlorate contamination as once believed, noting that it also comes from fireworks, road flares and fertilizer.

EPA official cites 'politics of fear'
Benjamin Grumbles, EPA's assistant administrator for water, said in a statement that "science, not the politics of fear in an election year, will drive our final decision."

"We know perchlorate in drinking water presents some degree of risk, and we're committed to working with states and scientists to ensure public health is protected and meaningful opportunities for reducing risk are fully considered," Grumbles said.

Grumbles said the EPA expected to seek comment and take final action before the end of the year. The draft document was first reported Monday by the Washington Post.

Perchlorate is particularly widespread in California and the Southwest, where it's been found in groundwater and in the Colorado River, a drinking-water source for 20 million people. It's also been found in lettuce and other foods.

In absence of federal action, states have acted on their own. In 2007, California adopted a drinking water standard of 6 parts per billion. Massachusetts has set a drinking water standard of 2 parts per billion.

More from msnbc.com Reservists come marching home from Iraq — to no job Many July 4 fireworks shows going up in smoke What was Jackson's doctor's name? Take our quiz ‘Unrecovery’: Jobless consumers hold back economy  Cosmic Log: New moon vistas revealed   Slideshow: Statue of Liberty, then and now Obama health czar directed firms in trouble

MORE FROM ENVIRONMENT

Environment Section Front

Shrinking sheep mystery solved: Blame warming Newsweek: Veterans eye green-collar jobs EPA: Spilled coal ash can be dumped in Ala. Study: Tropical rain band shifting north EarthTalk Q&A: paints and coal Newsweek: Chemicals in fireworks dangerous? 'Dire' report on Earth's biodiversity Should spitting worms be protected? Bush-era logging rule overturned 'Tuna summit' aims to save species Environment Section Front   Add Environment headlines to your news reader: