By Nina B. Elkadi for Sentient.
Broadcast version by Mark Moran for Iowa News Service reporting for the Sentient-Public News Service Collaboration

On March 10, the Iowa Department of Natural Resources received two phone calls. One caller phoned to complain that manure runoff was entering a tributary of Dry Run Creek, a waterway that provides vital habitat for fish and other wildlife in Winneshiek County, Iowa. The other caller described dead fish downstream. A few days later on March 13, the DNR reported the manure spill but did not name its source. Sentient has now obtained records from the Iowa DNR that show the source is an Iowa dairy operation — the Dale Humpal Dairy — located near an animal feeding operation run by another individual — Darryl Humpal — whose own operation has been fined multiple times for manure spill violations. Both operations have each received approximately $2 million in federal subsidies. 

This particular manure spill caused a 10.2 mile-long fish-kill — one of the largest documented kills to occur in Iowa in the last decade. 

In the Department’s field report, DNR officials observed “several dead fish” and “a strong odor of manure.” The report continues, “fish appeared to have recently died and they had not deteriorated yet.” In a letter to a DNR district supervisor, a natural resource technician describes, “freshly dead fish with some stranded gasping for air, manure on top of ice, and dirty flowing water below ice…”

More than 100,000 dead fish were observed by the investigators, whose subsequent water tests revealed lethal levels of ammonia. According to an evaluation of Dale Humpal Dairy’s manure storage facility on March 12, a faulty manure control structure had been “noted during previous inspections.” 

Lactating dairy cows produce 150 pounds of manure per day. Dairy operations produce a lot of manure — more than poultry farms or beef — and that manure can wreak havoc on the environment in a number of ways. In addition to water pollution, livestock manure management is responsible for around 9 percent of methane emissions in the U.S., according to the Environmental Protection Agency.

As part of its investigation, on March 11 DNR officials paid a visit to Dale Humpal Dairy, where the manure appeared to be originating. Dale Humpal, the apparent operator who is listed as a member of the Iowa State Dairy Association Board, was nowhere to be found that day.

According to DNR documentation, Dale Humpal Dairy is a 330-head dairy with 50-60 heifers, and 15 calves “in huts,” the small structures where individual calves are typically kept on industrial dairy operations. The documents refer to the dairy as an animal feeding operation, which the EPA defines as an agricultural operation where animals are raised in confinement. In one of the photos Sentient obtained, cows can be seen crammed in a large shed with just enough room at the bottom to poke their heads out for air.

On March 12, the DNR was able to make contact with Humpal, who told the DNR he was not aware of any manure overflowing from his operation. As the DNR official continued to test for ammonia downstream (with some samples testing as high as 23 parts per million), they ultimately came to their conclusion that the dairy was the source, and on March 31 called Humpal with the results.

“I stated to him that my investigation was concluded and it was determined that the runoff from his open lots caused manure to flow into the tile intake,” the official wrote, referring to the soil drainage system prevalent in Iowa farmland.

In 2017, a manure spill attributed to the animal feeding operation owned by Darryl Humpal — located near Dale Humpal Dairy — killed 34,486 fish in Dry Run Creek.

Water pollution continues to afflict Iowa amid a steady increase of farm animals in the state. The overwhelming majority — 99 percent — of farmed animals in the U.S. are raised in factory farms. In Iowa, there are almost 124 million farm animals at any given time — around 55 million chickens, 53.4 million hogs, 11.5 million turkeys, and 3.7 million cattle and cows. In Iowa, manure spills are commonplace: a recent report by Food and Water Watch found that from 2013 to 2023, there were 179 documented manure spills that killed almost 2 million fish.

Dale Humpal did not immediately respond to a request for comment. The Iowa Department of Natural Resources did not respond regarding what penalties it will be pursuing as a result of the violations.


Nina B. Elkadi wrote this article for Sentient.


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As Michigan aims to support 2 million electric vehicles by 2030, the new "Equitable EV Action Plan Framework" could help local leaders with the transition.

The framework was developed by the University of California-Berkeley's Center for Law, Energy and the Environment, and partners -- including the nonprofit advocacy group Michigan Clean Cities. The plan outlines steps local governments can take to build EV infrastructure and improve accessibility, particularly in underserved communities.

Jeffrey Hoang, communications and engagement associate for Michigan Clean Cities, shared insights about the plan in a recent Clean Fuels Michigan webinar.

"The focus of this framework is ensuring that community voice and impact is prioritized with these plans," Hoang explained. "To actually receive public input on where EV charges, EVSC should be placed within the city. So, actually going out to residents and just asking."

The framework recommends first identifying key agencies and staff involved, then those agencies can decide which action steps matter most for their community and how they should be prioritized. Still, many EV critics contend affordability is a big issue for everyday families, even with tax credits.

Backers said the plan helps cities plan for an EV future, not just for personal vehicles but rideshare services, e-bikes and e-scooters. It recommended outreach and funding strategies for transit projects along with examples of successful pilot programs.

Hoang added the framework can be viewed as a resource, connecting people to other helpful resources.

"There's so much knowledge and great experience and expertise throughout the industry," Hoang observed. "It provides quick access, you know just a quick 'control-F,' search for whatever kind of resource that you might need."

The framework highlighted the need for collaboration among local departments, such as planning, transportation and public works to ensure EV access is implemented effectively and equitably.

A critical decision now rests with Gov. Ron DeSantis, as Florida coastal communities and shellfish farmers urge him to sign a bill permanently banning oil drilling near the Apalachicola River. They see the river as a lifeline for the state's aquaculture industry - and a fragile ecosystem.

House Bill 1143, which passed the Legislature with a single "no" vote in the Senate, would block drilling within 10 miles of the Apalachicola National Estuarine Research Reserve.

Adrianne Johnson, executive director of the Florida Shellfish Aquaculture Association, warned that the region's economy and environment hang in the balance.

"That area is really unique; 75% of our oyster farmers operate across Franklin, Wakulla and Gulf counties, so those three counties that are downriver from the proposed oil drilling site," she said. "So, protecting that water is absolutely critical to the livelihood of our farmers."

Despite a court win stopping one drilling project in Calhoun County, she said unprotected sites still threaten Apalachicola's fragile recovery. Aquaculture in the area sustains an oyster industry that once supplied 90% of Florida's wild harvest before its collapse.

The Apalachicola River watershed supports Florida's emerging shellfish industry, which filters water, creates habitats and sustains rural coastal economies. Johnson said even the threat of oil contamination, such as what happened during the 2010 BP spill, could devastate the region.

"We are confident that the governor is supportive of our rural coastal communities," she said. "Under his governorship, the state has invested millions of dollars into restoring Apalachicola Bay. So really, this bill aligns with those values."

Under Florida's "7-Day Rule," DeSantis must decide on the Apalachicola drilling ban by next Wednesday. The bill automatically becomes law if he chooses not to either sign or veto it.


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June is World Oceans Month, and advocates are warning that industrial shipping pollution hurts both oceans and port communities.

At least 31 million people live within three miles of a port, according to the Environmental Protection Agency. That includes thousands of New Jerseyans. Industrial shipping frequently relies on heavy fuel oil, which releases carbon dioxide, sulfur oxides and black carbon into the atmosphere, causing harm to marine ecosystems and port communities.

Altorice Frazier, northeast port campaigner with Pacific Environment, said if the global shipping industry was its own country, it would be one of the largest polluters in the world.

"Global shipping burns some of the dirtiest fossil fuels, like heavy oil, producing toxic air pollutions and greenhouse gases," he explained.

Those toxic pollutants often affect the communities closest to ports, frequently working-class neighborhoods made up primarily of people of color. Shipping pollution causes $265,000 premature deaths and six million childhood asthma cases globally each year, according to the Ocean Conservancy.

One way to cut down on port pollution, Frazier said, is the electrification of cargo ships. Much like electric cars, cargo ships can be electrically powered and charged while at a port. He explained this would cut down on emissions, the acidification of marine ecosystems and the negative health effects on port communities.

"We really want to show where there's funding, there's possible job opportunities," Frazier continued. "There's a gain in this. It might not be in the short term, but in the long term, there is definitely opportunity. And we want to see industry and port authorities work alongside communities and government to really strategize how this is possible."

Frazier added shore power can create jobs and sustain economic growth for communities, while cutting down on pollution and noise.