California tightens rules on popular pesticide for farmers

  • In this Aug. 29, 2014, photo, Pinot Noir grapes just picked are shown in a bin in Napa, Calif. California regulators say they're tightening the rules on a pesticide popular with farmers over new health concerns. The California Environmental Protection Agency announced Friday, Aug. 18, 2017, that it's targeting chlorpyrifos. Farmers use it to kill pests that attack many crops, including grapes, almonds and cotton. AP Photo/Eric Risberg

  • In this May 13, 2004, photo, a foreman watches workers pick fruit in an orchard in Arvin, Calif. On Friday, Aug. 18, 2017, state regulators say they're tightening the rules on the pesticide chlorpyrifos over new health concerns. Officials are moving to put it on a list of chemicals known to be harmful to humans and also increase the distance farmers can apply it from schools and homes. AP Photo/Damian Dovarganes

  • In this Aug. 10, 2010, photo, almonds ready for harvest are seen at a farm in Hilmar, Calif. California regulators say they're tightening the rules on a pesticide popular with farmers over new health concerns.  AP Photo/Al Golub

Associated Press
Published: 8/18/2017 11:25:05 PM

SAN FRANCISCO — California is tightening the strictest rules in the nation on a pesticide that is popular with farmers over new health concerns, officials said Friday.

Farmers use chlorpyrifos (klor-PHIR-e-fos) to kill pests that attack a wide variety of crops, including grapes, almonds and cotton grown in California, the nation’s agricultural leader, as well as across the country.

State officials are taking steps to put the pesticide on a list of chemicals known to be harmful to humans and to also increase the distance from schools and homes within which it cannot be applied .

The moves run contrary to a decision by Scott Pruitt, the administrator of the U.S. Environmental Protection Agency, to end his agency’s effort to ban the pesticide sold by Dow Chemical after federal scientists concluded it can interfere with the brain development of fetuses and infants.

Pruitt told Congress in June his decision was based on “meaningful data and meaningful science.” Pruitt’s staff has thus far declined to provide details of what information Pruitt reviewed before making his decision.

California officials say that researchers are learning more about how the pesticide harms the developing brains of unborn babies and young children. Farmers apply it to 60 different crops, and it is most heavily used in San Joaquin Valley farming communities.

“New information in the scientific community leads us to believe the level of risk it poses is greater than previously known,” California EPA Secretary Matthew Rodriquez said in a statement. “The actions we are taking today reflect our commitment to the health and safety of all Californians, and the environment.”

California already prohibits farmers from applying the pesticide within 150 feet of a school or home, but officials say that could be increased to 450 feet.

A draft of the new rules was released Friday, and after a public comment period officials could begin to enforce them in September — with more regulations expected in late 2018. Methods of applying the pesticide from helicopters and airplanes may also be restricted.

Bob Blakely, vice president of California Citrus Mutual, said the use of chlorpyrifos is declining, but it remains an important resource for farmers. It is the only way to kill some pests, like ants, and is safe when used properly, he said.

“It’s a tool we need to have in the tool box and the ability to use it in the unique situation where it fits,” said Blakely, adding that he is still reviewing the new rules.

David Sousa, a spokesman for pesticide manufacturer Dow AgroSciences, called California regulators’ new rules “overly conservative.”

Environmental and farmworker advocates, however, say the rules don’t go far enough. They called for an outright ban.

Paul Towers of the advocacy group Pesticide Action Network said that state officials need to more aggressively protect poor Latino farming communities.

“California officials have chosen to ignore the mountain of evidence and delay critical actions to protect California communities,” he said. Officials are “failing to protect our most vulnerable populations, particularly pregnant women and children.”

Associated Press reporter Michael Biesecker contributed to this report from Washington, D.C.

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