Radon Mitigation: Fixing Elevated Radon Levels

A radon test result at or above 4.0 pCi/L is unsettling — but it's also one of the most fixable environmental problems a building can have. Environmental Services of America (ES America) provides radon mitigation for homes and commercial buildings across Georgia, South Carolina, and Alabama: systems designed to intercept radon below your foundation and vent it safely outside, followed by retesting to confirm the fix actually worked.

Reviewed & rated by customers

ES America Google reviewsES America on Yelp - customer reviewsES America on Angi / HomeAdvisorES America on the Better Business Bureau (BBB)

Member of & trained to industry standards

NORMI - National Organization of Remediators and Mold InspectorsIICRC Certified - Institute of Inspection, Cleaning and Restoration CertificationNRPP - National Radon Proficiency ProgramACAC - Council-certified Indoor Environmentalist (CIE/CIEC)RIA - Restoration Industry AssociationISSA - The Worldwide Cleaning Industry AssociationNARI - National Association of the Remodeling Industry

Credentials & standing

  • Asbestos: Licensed asbestos contractor in Georgia, South Carolina & Alabama (state license required and held).
  • Lead paint: EPA Lead-Safe Certified Firm (RRP).
  • Mold remediation: performed to EPA/industry standards (IICRC AMRT/MRS · NORMI CMR).
  • Radon measurement & mitigation: performed to EPA/industry standards (NRPP RMT/RMS).
  • Indoor air quality (IAQ): performed to EPA/industry standards (CIE/CIEC).
  • In business since 2009 · Insured $1M/$3M.
sealing and air control

When Mitigation
Is Recommended

The U.S. Environmental Protection Agency (EPA) recommends fixing a building when radon levels are 4.0 pCi/L or higher, and suggests considering mitigation for results between 2 and 4 pCi/L. Radon is, per the EPA, the second leading cause of lung cancer in the U.S. after smoking — which is why the agency treats elevated indoor radon as a problem to fix, not to monitor indefinitely.

If you haven't tested yet, start there: our radon testing service gives you a documented result against the EPA action level. Mitigation decisions should always be based on a proper test, not assumptions.

How Radon
Mitigation Works

Radon enters from the soil beneath and around your foundation. Mitigation works by giving that soil gas an easier path out — before it gets into your living space. The right system depends on your foundation type.

crawl space assessment

Active Sub-Slab Depressurization

For slab and basement foundations: a suction point is created through the slab, connected to a vent pipe and an inline fan that runs continuously, drawing soil gas from beneath the building and exhausting it above the roofline, away from windows and intakes. This is the most common and well-established approach.

leaking basement needs waterproofing

Sub-Membrane Depressurization

For crawl spaces: the crawl space floor is sealed with a durable membrane, and the fan draws radon from beneath the membrane rather than letting it rise into the house. This often improves general crawl-space moisture conditions as well.

what is crawl space encapsulation

Sealing and Entry-Route Control

Foundation cracks, slab joints, sump lids, and penetrations are sealed to improve system performance. The EPA notes sealing alone is not a reliable fix — it's a supporting measure, not a substitute for active mitigation.

crawl space moisture control

Post-Mitigation Retesting

Every ES America mitigation project ends the same way: a follow-up radon test confirming the level came down. You get the before-and-after numbers in writing. The EPA also recommends periodic retesting afterward to confirm the system keeps performing.

final inspection

What a Mitigation Project Looks Like

  1. Review your test result — yours or ours — and the building's foundation type.
  2. System design and written quote. Suction point location, pipe routing, fan sizing, and exhaust placement, with costs stated up front. We quote after evaluating — we don't guess.
  3. Installation, typically completed quickly with minimal disruption to your household or tenants.
  4. Verification retest and final documentation for your records — useful at resale.

Elevated radon discovered during a real-estate transaction on a deadline? Tell us when you call — and if the building has other urgent environmental issues alongside radon, our emergency remediation services team coordinates the response.

site environmental assessment

Residential and Commercial Mitigation

Homeowners get a system that protects the family quietly in the background — a pipe, a fan, and a number that came down. Commercial owners, schools, and multi-family operators get system design across larger ground-contact footprints, documentation for compliance files, and scheduling that respects occupied buildings.

Test First, Then Fix

Mitigation should always start from a documented test result — here's how the two services work together.

asbesto inspection monitoring sampling test

Radon Testing

A professional radon test gives you a written result in pCi/L against the EPA's 4.0 pCi/L action level — the documented starting point for any mitigation decision.

Radon Mitigation

Mitigation intercepts soil gas below the foundation and vents it outside. After installation, a verification retest confirms the level came down — you see the before-and-after in writing.

inspection monitoring sampling testing

Already have a recent test result from another provider? We can work from it — bring the report and we'll design from there.

Radon Mitigation
Services We Provide

ES America has spent since 2009 solving regulated environmental problems in Georgia, South Carolina, and Alabama — licensed, bonded ($1M/$3M), and insured, with EPA/AHERA/ASHARA certification (#20616) anchoring our asbestos practice. Radon mitigation gets the same treatment as everything else we do: a defined scope, work performed to the standard, and verification testing before we call it done.

residential crawl space encapsulation

Residential Radon Mitigation

A system designed for your home's foundation — slab, basement, or crawl space — installed with minimal disruption and verified with a retest. Quiet protection that runs in the background.

commercial crawl space encapsulation

Commercial Radon Mitigation

System design across larger ground-contact footprints for commercial buildings, schools, and multi-family properties — with documentation for compliance files and scheduling that respects occupied buildings.

basement under construction underwater with mold on wall

Crawl Space Mitigation

Sub-membrane depressurization seals the crawl space floor and draws radon from beneath the membrane — often improving general crawl-space moisture conditions at the same time.

inspection monitoring sampling testing

Frequently Asked Questions

At what radon level do I need mitigation?

The EPA recommends fixing the building at 4.0 pCi/L or higher and considering action between 2 and 4 pCi/L. If you're at or above the action level, mitigation is the recommended path.

How much does radon mitigation cost?

It depends on your foundation type, building size, and pipe routing. We provide a written quote after evaluating the building — no obligation, and no number invented before we've seen the site.

Does radon mitigation really work?

Yes. Properly designed active depressurization systems are the EPA-recognized standard for reducing indoor radon, and every ES America installation is verified with a post-mitigation retest so you see the reduction in writing.

Will the system be noisy or ugly?

The fan runs continuously but quietly, and piping can usually be routed through a garage, closet chase, or along an exterior wall. We review routing options with you before installation.

Do I ever need to test again after mitigation?

Yes — the EPA recommends retesting periodically after mitigation to confirm the system is still performing, and after any major renovation or HVAC change.

Got a high radon result? It's fixable. Call ES America at (404) 994-6006 or email services@es-america.com for radon mitigation anywhere in Georgia, South Carolina, or Alabama.

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