What radon level requires mitigation?

The EPA action level is 4.0 pCi/L. Mitigation is recommended at or above this; consider it between 2–4 pCi/L.

How much does radon mitigation cost?

Most residential systems run $800–$2,500, depending on home size, foundation type, and radon level.

Should the contractor be NRPP-certified?

Yes. NRPP or NRSB certification verifies the contractor is trained and tested to AARST standards. Every provider here is listed with their credential.

Radon Mitigation in Saint Charles, Missouri

2 verified radon specialists serving Saint Charles. Every listing shows the credentials we verified.

Informational only. This page helps you find certified professionals. It is not medical, legal, or structural safety advice. For any health or safety hazard, consult a certified/licensed expert. See our verification methodology.

Typical cost in Saint Charles

$800–$2,500

Credentials to expect

NRPP Certified, NRSB Certified, AARST Member

Key fact

Radon causes ~21,000 lung-cancer deaths per year in the U.S. (EPA).

Radon specialists in Saint Charles

2 listings

Brian Lieb

Saint Charles, Missouri

Pro

✓ CO DORA Radon Mitigation Professional✓ Radon Mitigation Professional

Brian Lieb is a radon mitigation professional serving Saint Charles, Missouri. He holds certifications as a CO DORA Radon Mitigation Professional and Radon Mitigation Professional. Contact Brian Lieb for more information.

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SCI Engineering, Inc.

Saint Charles, Missouri

Free

✓ NRPP Measurement✓ NRPP Mitigation

SCI Engineering, Inc. is a Radon Professional in Saint Charles, MO. It holds NRPP Measurement and NRPP Mitigation certifications. Contact SCI Engineering, Inc. for more information.

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Radon Mitigation in Saint Charles — FAQ

What radon level requires mitigation?: The EPA action level is 4.0 pCi/L. Mitigation is recommended at or above this; consider it between 2–4 pCi/L.
How much does radon mitigation cost?: Most residential systems run $800–$2,500, depending on home size, foundation type, and radon level.
Should the contractor be NRPP-certified?: Yes. NRPP or NRSB certification verifies the contractor is trained and tested to AARST standards. Every provider here is listed with their credential.

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