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Hundreds of Iowans turn out to hear scientists discuss Polk County water quality report

Iowa researchers say contamination in water comes from multiple sources, but the vast majority of nitrate contamination comes from agriculture runoff
Monday, August 11, 2025
The Gazette
https://www.thegazette.com/environment-nature/hundreds-of-iowans-turn-out-to-he…
The University of Iowa
University of Iowa

IIHR—Hydroscience and Engineering

College of Engineering

100 C. Maxwell Stanley Hydraulics Laboratory
Iowa City, Iowa 52242-1585
Email: iihr@uiowa.edu
Office: 319-335-5237
Fax: 319-335-5238

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