WASHINGTON, Oct. 12 (TNSLrpt) -- Modeled atrazine concentrations in the Little Arkansas River exceeded a federal drinking-water benchmark about 8% of the time at two monitoring sites, according to the U.S. Geological Survey's 'Long-Term Trends of Selected Pesticides in the Little Arkansas River, South-Central Kansas, 1995-2023.' Written by Mandy L. Stone and Brian J. Klager, Scientific Investigations Report 2026-5016 examines pesticide conditions in river water used as a source fo . . .

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