Zone 1 radon area 3

https://myradonbasementsdaily.juniperbrief.com/posts/study-links-radon-in-basements-to-broader-indoor-air-quality-concerns

Living in a Zone 1 radon area means your home has the highest potential for elevated radon levels, a colorless, odorless gas from uranium decay in soil. It's smart to test your basement or lowest lived-in level, especially in older homes with cracks or sump pumps. Mitigation systems, like sub-slab depressurization, can reduce risks effectively, making your indoor air safer without major disruption.