Radon mitigation systems would be mandatory in new builds under House-passed bill

By: Cami Koons

Outlets: Iowa Capital Dispatch

Published: March 12, 2026

Words: 502

Last Updated: 4 months, 3 weeks ago

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Radon mitigation systems would be a requirement of Iowa building code for newly constructed homes under a bill passed Thursday by the Iowa House.

Supporters of the bill said it’s a step toward protecting Iowans from the cancer-causing gas that is often found in basements.

Radon is a naturally occurring, radioactive gas that is emitted during the breakdown of soil and rock. The gas can seep into houses through the foundation and is …

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