San Francisco, CA – July 18, 2025 – The U.S. Environmental Protection Agency (EPA) Pacific Southwest Region has launched an immediate investigation into the illegal pesticide crisis in Siskiyou County, California, following a state of emergency declaration by the Siskiyou County Board of Supervisors. Regional Administrator Josh F.W. Cook issued a statement today addressing the escalating public health and environmental threat posed by the illegal importation, distribution, and burning of highly toxic, foreign-manufactured pesticides tied to illicit cannabis cultivation.
