According to a report from Inside Climate News, atrazine has been found in dangerous concentrations in roughly a quarter of U.S. rivers. The findings come from an interview with Nathan Donley of the Center for Biological Diversity, conducted by Aynsley O'Neill for the public radio program Living on Earth.
Atrazine is the second-most widely used weed killer in the United States, behind only glyphosate. The chemical is described as carcinogenic, and the report argues that society does not need it, making the widespread river contamination especially concerning.
Because this is a single source, there are no differing perspectives to compare. Even so, the report points to a familiar environmental health problem: a widely used agricultural chemical may be showing up in waterways far more often than the public realizes.