Research links long term atrazine exposure to cancer risks in farm regions
A growing body of scientific research is drawing renewed attention to atrazine, one of the most widely used herbicides in American agriculture. Researchers and public health experts are examining whether long term exposure to this chemical may be linked to non-Hodgkin lymphoma and other cancers.
Atrazine is commonly applied to corn and soybean crops across major farming regions. Over time, it has been detected in groundwater, surface water, and private wells near agricultural communities. Studies suggest that repeated exposure may lead to harmful health effects, particularly for farmers, pesticide applicators, and rural families.
"Atrazine is much more strictly regulated in the European Union. It was banned in 2004 when regulators determined that the chemical's groundwater contamination was ubiquitous and unpreventable. Despite international restrictions, atrazine remains readily available in the U.S," said Health Policy Watch. Timothy A. Loranger, attorney and senior partner at Wisner Baum.
Concerns have increased following a 2025 evaluation by the International Agency for Research on Cancer which classified atrazine as probably carcinogenic to humans. The agency reported that atrazine shows key characteristics of carcinogens, including oxidative stress, inflammation, and suppression of the immune system.
Additional findings came from a 2025 study conducted by the University of Nebraska Medical Center. Researchers analyzed decades of environmental monitoring data, reviewing more than 27,000 groundwater samples, and over 31,000 surface water records. The study found widespread atrazine contamination in private wells across several farming counties, with especially high detection rates in multiple rural areas.
Despite wide international restrictions, atrazine remains approved for use in the United States.
The U.S. Environmental Protection Agency estimates that about 72 million pounds of atrazine are applied annually. Researchers also warn that the chemical can remain stable in water for more than 200 days, increasing the chance of long-term environmental exposure.
Wisner Baum is currently reviewing potential claims involving individuals diagnosed with non-Hodgkin lymphoma after prolonged atrazine exposure. The investigation focuses on whether health risks were adequately disclosed to those affected.
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