PFAS pesticides approved after EPA adopts new toxicity definition

Regulatory Shift: New PFAS Pesticide Approvals Signal Industry Influence Under Trump Administration

Recent Approvals and California's Critical Role

PFAS pesticides approved after EPA adopts - The Environmental Protection Agency has moved forward with authorization for three additional pesticides containing perfluoroalkyl and polyfluoroalkyl substances, commonly referred to as PFAS. These chemical compounds will be deployed across American agricultural operations to eliminate unwanted vegetation. This latest action brings the cumulative total to five such approvals during the current presidential term, with two others receiving clearance in November of 2025.

California holds particular significance in this regulatory landscape. According to research published in March, approximately forty percent of nonorganic produce cultivated within the Golden State already harbors detectable levels of these persistent chemical residues. The state's agricultural output carries substantial national weight, providing close to fifty percent of all vegetables consumed across the country alongside more than seventy-five percent of fruits and nuts. This makes California's farming practices a critical indicator of broader trends.

Health Implications and Scientific Concerns

Government health agencies have documented numerous adverse health outcomes associated with PFAS exposure. These persistent compounds have been connected to elevated cancer rates, obesity development, thyroid dysfunction, elevated cholesterol levels, reduced fertility capacity, and disruptions to both reproductive and developmental processes. Additionally, damage to immune system functioning represents another documented consequence of prolonged exposure.

Scientists refer to these substances as "forever chemicals" due to the exceptional strength of their carbon-fluoride molecular bonds. These bonds, among the most robust found in nature, prevent the compounds from breaking down naturally, allowing them to persist in environmental systems for years, decades, or potentially centuries. This longevity creates ongoing exposure pathways for human populations.

"We're seeing the Trump administration do everything they can to continue our exposure to PFAS," said Jared Hayes, a senior policy analyst at the Environmental Working Group, or EWG, a nonprofit focused on protecting human health and the environment.

"Unfortunately, our exposure is being increased, not decreased," Hayes said. "We're seeing drinking regulations changed. We're seeing new PFAS pesticides being approved on a regular basis, much faster than the previous administration."

Political Backlash and Industry Connections

Despite mounting scientific evidence and public concern regarding PFAS health risks, the current administration has postponed or reversed stringent regulations established under the Biden presidency concerning permissible levels of these toxic compounds in drinking water supplies. Critics point to this pattern as evidence of systematic deregulation favoring industrial interests.

The "Make America Healthy Again" movement, or MAHA, has emerged as a vocal opponent of these developments. Originally formed to support presidential promises of reducing toxic chemical presence in food and water systems, MAHA members now express frustration over what they perceive as contradictory actions. The movement has particularly criticized the appointment of industry-affiliated individuals to influential positions within the EPA and various scientific advisory bodies.

"EPA-approved single fluorinated compounds are not forever chemicals, they are not PFAS, and do not pose any risks of concern when used as labeled," the page now states.

Definition Changes and Internal Documentation

A significant regulatory shift occurred in mid-November 2025 when the EPA modified its official website definition of PFAS chemicals. The original definition, which had garnered endorsement from over one hundred fifty leading researchers in the field, the European Union, and approximately half of American states, took a broader approach to identifying these compounds.

The revised definition introduced a crucial distinction: pesticides containing any form of carbon-fluoride bond would no longer automatically qualify as potentially toxic under the new framework. Instead, only compounds with multiple carbon-fluoride bonds would be classified as PFAS, while those with single bonds would be deemed "safe" and excluded from the category entirely.

"EPA Administrator Lee Zeldin 'claims he wants to protect people from PFAS but his actions indicate that he is willing to expose people to more PFAS substances by approving new PFAS pesticides and rescinding drinking water protections for PFAS — actions that reflect a disregard for gold standard science and the Americans that have been harmed by PFAS substances,' Munoz told CNN in an email.

Internal communications obtained through Freedom of Information Act requests reveal that senior officials within the EPA's Office of Chemical Safety and Pollution Prevention actively approved the updated guidance regarding PFAS pesticide dangers. Kyle Kunkler, serving as Deputy Assistant Administrator for OCSPP, coordinated these regulatory changes. Prior to his current role, Kunkler held the position of senior director of government affairs for the American Soybean Association, highlighting the revolving door between federal agencies and industry organizations that critics argue has intensified under the current administration.

The Center for Biological Diversity, an advocacy nonprofit headquartered in Tucson, Arizona, secured these internal emails through their FOIA request. The organization's primary mission centers on preserving endangered species, though their work increasingly intersects with broader environmental health concerns. Their documentation provides insight into how the regulatory changes were developed and implemented behind closed doors.

Independent toxicologist Alexandra Munoz, who collaborates with MAHA on pesticide and toxic chemical issues, has been particularly vocal in her criticism. In public comments opposing several candidates who subsequently received approval to serve on the EPA's Science Advisory Committee on Chemicals, Munoz argued that financial connections to industry could cause officials to prioritize corporate profits over public health outcomes.

The EPA's departure from global scientific consensus in defining PFAS represents what Munoz describes as "the deep level of industry capture at the agency and the willingness of political appointees to succumb to that pressure." This assessment reflects broader concerns about how regulatory decisions may be influenced by industry relationships rather than purely scientific evidence.