Water Quality

Corn growers in the Midwest are testing whether they can use less fertilizer and still maintain yields or improve their bottom line through on-farm research trials. The project is designed for producers who use practices to boost soil health.

Iowa’s House and Senate leaders said Thursday they need more time to review an executive order signed by President Donald Trump that aims to increase the supply of glyphosate-based weedkillers in the U.S. It comes as the state Legislature decides whether to shield pesticide companies from certain lawsuits.

In Early, Iowa, residents check their Facebook to see if their water is safe to drink. On this News Buzz edition of River to River, Sentient Media's Nina Elkadi shares her investigation into nitrate pollution in small towns' tap water. But first, Robin Opsahl of Iowa Capital Dispatch gives us a statehouse update. Also, Iowa Capital Dispatch's Cami Koons talks about a controversial piece of legislation that could change how Iowa's impaired waters list is managed. Iowa’s State Climatologist Justin Glisan explains this year’s snow drought and its consequences. Finally, we groove into the weekend with Studio One's CeCe Mitchell with new tracks from Buck Meek and Dogpark.

With data centers on the rise and an increased need for irrigation for farming, Iowa is seeing a bigger need for ground water, with not enough known about our supply.State Geologist Keith Schilling shares how the state's current groundwater monitoring paces far behind neighboring states, and what we should be doing now to reverse the trend. Linn County Sustainability Director Cara Matteson also joins to talk about how the county is prioritizing groundwater mapping and other water studies. Then, we look back at Christopher Merrill's 25 years as director of the International Writing Program at the University of Iowa.

Democrats in the Iowa House of Representatives proposed a water quality plan Thursday that calls for more financial assistance and incentives for farmers to adopt practices that reduce water pollution.

Former University of Iowa professor and Democrat Chris Jones announced he's running for Iowa secretary of agriculture. He will face a June primary against Marshalltown-area farmer, Wade Dooley.

The Linn County Board of Supervisors has approved rezoning that supports NextEra Energy's effort to recommission the Duane Arnold nuclear power plant in Palo. The project still needs approval from multiple state and federal authorities, but county supervisors say the rezoning gives Linn County residents a seat at the table.

Elevated nitrate levels in the Des Moines and Raccoon rivers prompted Central Iowa Water Works to start up its nitrate removal system this month. A network of water quality sensors shows a similar uptick in other streams and rivers across state.

IPR's journalists rehash their most consequential moments of the last year — from raucous town halls to the arrest of Des Moines schools' superintendent. Assistant news director Grant Gerlock and reporters Katarina Sostaric, Natalie Krebs, James Kelley and Rachel Cramer bring us back through the biggest stories of 2025 and share what they'll be watching in the year to come.

Iowans share how they are trying to reduce pollutants in waterways on this archive episode.