What Happens If My Radon Levels Are High?

If your radon test shows levels over 4.0 pCi/L, don’t panic — but don’t ignore it either.

The EPA’s action level is 4.0 picocuries per liter, and anything above that is considered elevated. These high levels can pose long-term health risks, especially in homes with children, smokers, or frequent basement use.

What Should You Do Next?

1. Understand the risk:

Radon is the second leading cause of lung cancer in the U.S., and long-term exposure is where the danger lies.

2. Don’t rush into mitigation:

At Marville’s Inspect Right, we only offer testing — not mitigation. That means there’s no pressure, no upsell, and no hidden motive. You’ll get honest results and guidance on what your options are if mitigation is needed.

3. Get a quote (if needed):

If levels are high, we’ll point you toward trusted local mitigation professionals. Most mitigation systems cost less than you’d expect and can be installed in just one day.

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Testing is the first — and most important — step.

We provide fast, certified results with no scare tactics.