The Toxic Legacy of Paraquat: California’s Ban is a Faint Glimmer of Hope in a Larger Regulatory Nightmare

The decision by California to ban paraquat, one of the most toxic and contentious herbicides on the market, marks a significant victory for public health advocates who have long warned about its devastating effects. This development comes as a welcome respite from the Environmental Protection Agency’s (EPA) seeming inability or unwillingness to take action against this deadly substance.

For decades, paraquat has been used extensively across millions of acres in American cropland, despite being banned in over 70 countries worldwide. Its use has been linked to Parkinson’s disease, cancer, heart failure, and a host of other maladies. The fact that it is still permitted for use in the US underscores the regulatory capture that plagues the EPA.

Nathan Donley, environmental health science director at the Center for Biological Diversity, notes, “there’s just a regulatory capture there that is entrenched in the culture at the EPA, and has been for decades, and there is no desire within the agency to go against what industry wants.” The California decision marks the second state to prohibit paraquat, following Vermont. However, it remains to be seen whether this development will have a broader impact on federal policy.

The battle between public health advocates and the agricultural industry over paraquat’s fate has been ongoing for years, with advocates accusing the EPA of ignoring scientific consensus and prioritizing industry interests. Paraquat is among the most harmful pesticides to wildlife, and its use in California threatens at-risk species such as the San Joaquin kit fox and the Swainson’s hawk.

Industry’s decision to withdraw its use permit instead of sharing updated data on health and environmental risks raises serious questions about corporate willingness to prioritize profits over people. As Karen Morrison, director of the California Department of Pesticide Regulation (DPR), notes, “we need the right data to identify where there are risks to people and the environment.” The lack of transparency in this regard is a stark reminder of the systemic problems that plague our regulatory system.

The battle over paraquat has far-reaching implications for public health policy and environmental protection. As California’s ban unfolds, pressure will likely mount on the EPA to reconsider its stance on paraquat, given the mounting evidence of its harm. The question remains whether this momentum can translate into broader changes at the federal level.

Until we address the underlying issues that have allowed paraquat to remain on the market for so long – namely, the prioritization of industry interests over public health and environmental concerns – decisions like California’s ban will be seen as isolated victories rather than part of a broader shift in policy. The regulatory capture that has enabled this situation is a symptom of a larger problem, one that requires immediate attention to prevent further harm.