Radon in Minnesota: why it matters here

Radon is a naturally-occurring radioactive gas released from uranium in soil. You can't see, smell, or taste it. It's the leading cause of lung cancer in non-smokers and the second leading cause overall, according to the EPA. Minnesota's geology is radon-heavy: the Minnesota Department of Health reports more than 40% of homes tested statewide exceed the EPA action level. Scott County, which includes Shakopee, Prior Lake, Savage, and Jordan, is designated EPA Radon Zone 1 — the highest-risk zone.

How we test

We use continuous-monitor radon devices (CRMs) that record hourly readings over a minimum 48-hour test period. That's more accurate than a passive charcoal canister and gives a real picture of variation across the test window. Results print out immediately and are included in your inspection report.

What the numbers mean

• Below 2.0 pCi/L: Low — no action needed, retest every 2 years.
• 2.0–4.0 pCi/L: Moderate — EPA recommends considering mitigation.
• 4.0+ pCi/L: EPA action level — install an active sub-slab depressurization system.

If you test high

Mitigation in a typical Shakopee home involves an active sub-slab depressurization system — a fan-and-pipe arrangement that pulls soil gas from beneath the slab and vents it above the roof. Installed by a licensed MN mitigator, systems routinely reduce indoor levels to below 1 pCi/L. We do not sell mitigation — so our test results are independent of any sales motive.