High levels of cancer-causing radon affect 3 of 4 Iowa homes; Lawmakers look at several bills to make state safer
JB Shearer doesn’t wear a cape, but he does hero-level work: reducing the risk of radon in Iowa homes.
“Hello, anyone home? JB the Radon Man here.”
The state may need many heroes like him.
Iowa ranks first in the percentage of homes that have radon levels at or above the Environmental Protection Agency’s accepted level.
Radon is a colorless, odorless gas. There is a lot of it in the state, too.
It matters because it is a known cause of lung cancer. Nearly 1,500 Iowans will die from the disease this year. It’s the deadliest form of cancer in Iowa. More than 25 percent of those deaths are tied to radon.
About 1 in 15 homes nationally have high levels of radon. Around 3 out of 4 in Iowa, or 70 percent, have high levels.
“All of them have the same percentage chance of failure,” Shearer said. “Every house is fixable.”
There are tests called continuous radon monitors, usually for real estate transactions, and also DIY charcoal kits.
The EPA says if levels are above 4 picocuries, it needs mitigating. If it’s between 2 and 4 picocuries, a homeowner should really consider fixing it, Shearer said.
The World Health Organization has stricter standards, saying anything above 2.7 picocuries is too high.
Shearer aims to have the reading be the same as outdoors – at 0.4. With that reading, “you’re safe being in the basement as you are outside. So that’s exactly what you’re shooting for,” he said.
After testing, the next step would be to have an active mitigation system installed, if needed. A fan would pull the gas through PVC piping in the ground in the basement and then outside of the home.
“It just mitigates it safely outside so no radon is coming in the house,” Shearer said.
The average cost is $1,400 to $1,500.
“We always say it’s a lot cheaper than lung cancer,” he said.
Around five years ago, Adel resident Maria Steele’s life changed when she found out she had stage 4 lung cancer. “It just kind of rocked my world and was totally out of left field,” she said.
She didn’t smoke and didn’t have other risk factors.
She tested her home for radon. The result: double what it should be. She tested again and it was still high.
In a week, she had a mitigation system in place. She tests every two years as recommended.
“Radon has affected my life in so many ways,” the mom and grandmother said.
Iowa naturally has lots of radon, said Dr. Betsy Swanner, an Iowa State professor in the Department of Earth, Atmosphere, and Climate.
"The soils that we live on are derived from material that was brought here by glaciers from other parts of North America, or they were created by rocks that were deposited out of an ocean that was here in the deep past,” she explained.
These materials contain uranium, which can decompose into radon. Radon can escape through the fractures and cracks in Iowa’s soil and then seep into our homes and bodies.
“What’s really dangerous is that we inhale that radon,” Swanner said. “And while it’s in our lungs, it decomposes into something else that’s a solid. Then that solid is stuck in our lungs and could undergo further radioactive decay and release harmful energy and particles in our bodies.”
Steele’s doctor told her that radon could be a major cause of her cancer.
“He said, ‘Maria, no one can say for 100 percent. However, you have no other risk factors,’” she said.
She believes it’s long overdue for lawmakers to address radon more.
“It should’ve been done yesterday, should’ve been done years ago. We’ve had the technology,” she said.
Steele advocates for radon mitigation and has been at the Statehouse talking to lawmakers.
This session there are several bills addressing radon. Ottumwa Rep. Hans Wilz is trying to be a voice for change.
“We’re talking about homes being built. … We’re talking about people who have existing homes and getting a tax credit for putting a mitigation system in,” Wilz said.
On Wednesday, legislation that would provide homeowners up to a $1,000 tax credit to install a mitigation system unanimously advanced to the Iowa House for a vote. Lawmakers are still considering two other bills that would require new builds to install systems and provide thousands of dollars for free testing kits.
“Almost every study tells you that every dollar spent on radon mitigation is going to save you $20 to $20, maybe even $40 off avoided health care later on in life,” Wilz said.
Radon legislation failed to get to the governor’s desk in 2024. Wilz kept working on it.
“I’m optimistic,” he said. “We’re approaching it a lot differently. I think this is a real attempt to get as many things from radon down the road, and the messaging is right. It’s true. It affects all Iowans.”
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