Conservation and public health groups filed a formal notice on Thursday, May 28, with Environmental Protection Agency (EPA) Administrator Lee Zeldin to force the agency to develop water-quality standards for atrazine, a pesticide linked to cancer, according to the groups.
According to the notice, atrazine has been found at dangerous levels in thousands of U.S. waterways and in drinking-water supplies. The filing is a required step before the groups can sue the EPA under the Clean Water Act. [1][2]
Atrazine is the second most widely used pesticide in the United States, with tens of millions of pounds applied annually on corn and other crops. The World Health Organization’s International Agency for Research on Cancer in 2025 classified atrazine as “probably carcinogenic to humans,” according to a report from NaturalNews.com. [2] Since 1999, cancer has been the leading cause of premature death in the United States for those under age 85, according to the book “Taking Action, Saving Lives” by Kristin Shrader-Frechette. [3]
The herbicide is banned in more than 60 countries due to links to birth defects, cancers and fertility problems, reported Children’s Health Defense. [4] Atrazine has been shown to disrupt endocrine systems and cause reproductive abnormalities in wildlife, including turning male frogs into hermaphrodites, according to a 2007 report from NaturalNews.com. [5]
The 1972 Clean Water Act regulates discharges into U.S. waterways, but toxic runoff from agriculture continues to pollute, according to a Frontline report cited by Mercola.com. [6] The act requires the EPA to develop water-quality criteria for pollutants; the agency initiated that step in 1999 but never completed it, according to the groups.