Contaminant found in some foods
WASHINGTON — The government has found traces of a rocket fuel chemical in organic milk in Maryland, green leaf lettuce grown in Arizona and bottled spring water from Texas and California.
What’s not clear is the significance of the data, collected by the Food and Drug Administration through Aug. 19.
Sufficient amounts of perchlorate can affect the thyroid, potentially causing delayed development and other problems.
But Environmental Protection Agency official Kevin Mayer called for calm, saying in an interview Tuesday: “Alarm is not warranted. That is clear.”
“I think that it is important that EPA and FDA and other agencies come to some resolution about the toxicity of this chemical,” Mayer said. “That has been, frankly, a struggle for the last few years.”
The FDA found that of the various food items it tested, iceberg lettuce grown in Belle Glade, Fla., had the highest concentrations of perchlorate. The greens had 71.6 parts per billion of the compound, the primary ingredient in solid rocket propellent. Red leaf lettuce grown in El Centro, Calif., had 52 ppb of perchlorate. Most of the purified, distilled and spring bottled water tested around the nation tested had no detectable amount of perchlorate.
Whole organic milk in Maryland, however, had 11.3 ppb of perchlorate.
Asked whether that level of chemical in milk was worrisome, Mayer, the EPA’s regional perchlorate coordinator for Arizona, California, Hawaii and Nevada, said, “The answer is, we don’t know yet.”
The FDA said in a statement that consumers should not change their eating habits in response to the test results, posted on the agency’s Web site Friday.
The testing comes as federal agencies try to find how much perchlorate people are exposed to from food so they can determine whether action is needed to protect the public health. Federal agencies have been trying since the early 1990s to determine what level of perchlorate is safe.
The state of California, meanwhile, set a standard of no more than 10 ppb of perchlorate in drinking water. That was lowered to 6 ppb in drinking water to account for the chemical also lacing food, Mayer said.
A more conservative suggestion, in a draft from the EPA, would allow no more than 1 ppb of perchlorate in drinking water.