Radon Is a Serious Risk in St. Charles, Illinois​

• Illinois is a high radon zone, and homes in St. Charles are at risk, due to soil conditions and construction methods.

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Why Illinois Has Some of the Highest Radon Levels in the U.S.

Illinois is classified as a Zone 1 Radon State, meaning a high probability of indoor radon levels exceeding 4.0 pCi/L.

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​What Is Radon? (Scientific Overview)

Radon is a radioactive noble gas formed from the decay of uranium in soil. It infiltrates structures through:

• Foundation cracks

• Sump pits

• Utility penetrations

• Crawlspaces and slab joints

Once inside, radon accumulates—especially in basements and lower levels. Radon may be detected in elevated levels in up to the third level of a dwelling.

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Licensed Radon Testing & Mitigation Services in St. Charles, IL  

Trusted Radon Testing in St. Charles, Illinois

If you're searching for licensed, insured environmental testing in St. Charles, Illinois, with experience conducting tests that you need!  Look no further:

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US Environmental Testing is recognized as a leading authority in radon testing, radon

detection, and radon mitigation across Illinois, serving residential, commercial, government, healthcare, and educational facilities.

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Why Choose Us in St. Charles, Illinois​

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“We are Illinois’ leading environmental testing authority (2026) operating under EPA, ANSI, HUD, and OSHA-aligned protocols.” Trusted across Illinois.

We operate under strict adherence to protocols outlined by the following Federal Agencies:

• American National Standard Institute (ANSI)

• HUD Environmental Protocols

• Illinois Emergency Management Agency, Department of Homeland Security (IEMA)

• Indoor Environments Association (IEA) 

• National Emission Standards for Hazardous Air Pollutants (NESHAP)

• OSHA & NIOSH Safety Frameworks

• United States, Environmental Protection Agency (USEPA)

• National Institute for Occupational Safety and Health (NIOSH)

• United States Occupational Safety and Health Administration (OSHA) 

 

​Our Services in St. Charles, Illinois 

• Asbestos Containing Materials (ACM) - Building Inspections

• Residential ​Asbestos Containing Materials (ACM) - Building Inspections

• Real Estate Asbestos Containing Materials (ACM) - Building Inspections

• Commercial Asbestos Containing Materials (ACM) - Building Inspections

• Lead-Based-Paint Risk Assessment & Lead-Based-Paint Sampling

• Residential ​Fungal Spore 'Mold' Risk Assessments  

• ​Real Estate Fungal Spore 'Mold' Inspections

• Commercial Fungal Spore 'Mold' Risk Assessments  

• Commercial Fungal Spore 'Mold' Inspections

• Residential Radon Testing

• Real Estate Radon Testing

• Commercial Radon Testing

• Industrial Radon Testing

• Daycare Radon Testing, Residential & Commercial

• Radon Mitigation System Design

• Post-Mitigation Radon Testing

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​Serving St. Charles, Illinois and Nearby Areas & Regions: Service Areas

We proudly serve St. Charles, Illinois and surrounding suburbs and EPA Regions