University of Iowa Researchers Detect Common Pesticides in Iowa’s Water, Homes
University of Iowa researchers have discovered common farm pesticides, including insecticides and herbicides like clothianidin, imidacloprid, and atrazine, in surface water samples across northeastern Iowa, on leaves from urban areas like Iowa City, and within household dust collected from rural…
Des Moines Ames, IA, November 12, 2026 —
Researchers at the University of Iowa have identified common agricultural pesticides in various environmental samples throughout the state, indicating widespread presence and potential exposure routes for residents. The findings encompass surface water, urban leaf litter, and household dust collected from both rural and urban areas across Iowa.
The study detected insecticides and herbicides, including specific chemicals such as clothianidin, imidacloprid, and atrazine. These pesticides were found in surface water samples taken from northeastern Iowa. Additionally, samples of leaves collected from urban environments, including Iowa City, also contained detectable levels of these chemicals.
Further extending the scope of the findings, the research team also collected household dust samples. These dust samples, gathered from homes across both rural and urban settings within Iowa, revealed the presence of the same common farm pesticides. This suggests that residents may be exposed to these chemicals within their living spaces, regardless of location.
The study’s findings underscore the pervasiveness of these agricultural chemicals within Iowa’s broader environment. The presence in multiple environmental compartments—surface water, urban foliage, and indoor dust—highlights the interconnectedness of agricultural practices and the wider ecosystem, including human living environments. The specific details regarding the exact locations of surface water sampling beyond “northeastern Iowa,” the precise urban areas sampled for leaves other than Iowa City, or the number of households included in the dust sampling were not provided.
The University of Iowa researchers’ work points to potential exposure pathways for Iowans through various means, including contact with contaminated water, incidental ingestion or inhalation of contaminated dust, and potentially other environmental interactions.
Story summarized from the original created by Rachel Cramer on www.iowapublicradio.org, see more information here.
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