With many Iowans concerned about the quality of their drinking water, Iowa Geological Survey experts are mapping water contamination sources to try to understand where its groundwater is most vulnerable.

A group of Iowa scientists and experts, including IIHR researcher Jackie Dowling, is calling for people to reconsider the state’s plans for expanding its electric grid.

University of Iowa researcher David Cwiertny comments on the results of a 2025 study commissioned by the Central Iowa Source Water Research Assessment which concluded that nitrates in the central Iowa water supply serving 600,000 Polk County residents are among the highest in the nation.

Dubuque County watersheds and IIHR—Hydroscience and Engineering installed new water quality sensors on four streams this week to monitor nitrate levels in real time. Officials say the system will make it easier for people to know what's in the water.

New University of Iowa water quality sensors are detecting nitrate contamination in Dubuque County streams as the Iowa Environmental Council says the state faces severe nitrate contamination in its water.

How do environmental exposures affect our health? Join us for this Iowa Farmers Union Lunch and Learn conversation with David Cwiertny about the University of Iowa's new Iowa INSIGHT project, a groundbreaking research initiative designed to understand how environmental contaminants like nitrates and PFAs impact Iowa communities.

A research project at the University of Iowa is offering private well owners in six counties free arsenic testing kits to see if there is a need to offer the kits in all 99 counties. UI professor David Cwiertny helps lead the Iowa Integrated Network for Science, Information and Geospatial Health Tracking, or INSIGHT.

University of Iowa researchers are warning that Iowans relying on private water wells may face a higher risk of arsenic contamination. Free testing is now being offered in select counties.

University of Iowa researchers are offering free arsenic testing kits to private well owners in six Iowa counties as part of a new effort to better understand drinking water risks across the state.

A research project at the University of Iowa is offering private well owners in six counties free arsenic testing kits to see if there is a need to offer the kits in all 99 counties.