California Agency Sets Warning Levels for Chlorpyrifos Pesticide (1)

California health officials on Wednesday announced new thresholds for when products containing the insecticide chlorpyrifos must have exposure warnings.

The state’s Office of Environmental Health Hazard Assessment set oral, inhalation, and skin exposure levels under California’s Safe Drinking Water and Toxic Enforcement Act, better known as Proposition 65. The rule requires consumer warnings on products listed as carcinogenic or known to cause birth defects or reproductive harm.

• The levels take effect Oct. 1 and apply to products where oral or inhaled exposure is 0.58 micrograms per day and skin exposure is 7.2 micrograms per day of chlorpyrifos. Products with concentrations ...