Radon Is a Serious Risk in Addison, Illinois​

• Illinois is a high radon zone, and homes in Addison 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 in Addison, IL  

Trusted Radon Testing in Addison, Illinois

If you're searching for licensed, insured environmental testing in Addison, 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 Addison, 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 Addison, 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 Addison, Illinois and Nearby Areas & Regions: Service Areas

We proudly serve Chicago, Illinois and surrounding suburbs and EPA Regions  

What Makes Us Different

 

Compliance-First Approach

We don't just test - we ensure full regulatory alignment.

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Scientific Precision

• Advanced monitoring equipment and calibrated data analysis.

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Multi-Sector Expertise

• Residential

• Capital Improvement (CI)

• Commercial

• Education

• Government

• Healthcare

• Industrial

Illinois Radon Laws & Compliance (2026)

 

Real Estate Transactions:

Radon disclosure is required

Testing is strongly recommended during inspection

 

Schools:

Illinois law recommends testing every 5 years

Results often reported to state authorities

 

Daycares:

Required at time of initial DCFS license issuance and every 3 years for compliance (DCFS)