https://analytics.ahrefs.com/analytics.js
top of page

"Fast. Accurate. Experienced. Knowledgeable."
Test-only. No remediation. No conflict of interest.

Radon Testing: Commercial, DCFS, Real Estate, Residential, 

​Call Today - Test Tomorrow!   

Radon Basics

Residential 

Measurements

Day Care Centers

& Schools 

Common

Questions

Schedule Now

Preparing for the measurement

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.

We operate under strict adherence to:

  • EPA Radon Guidelines

  • ANSI/AARST Standards

  • HUD Environmental Protocols

  • OSHA & NIOSH Safety Frameworks

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.

Contributing Factors:

  • Glacial soil composition

  • Limestone bedrock

  • Seasonal pressure differentials (stack effect)

  • Modern airtight construction practices

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)

Our Radon Services Across Illinois

 

Radon Testing

  • 48-hour EPA-compliant testing

  • Radon Detection, Short-term & Long-term

  • Real estate certified reports

​

Radon Mitigation

  • Sub-slab depressurization systems

  • Crawlspace encapsulation

  • Commercial system design

 

Post-Mitigation Verification

  • Confirm reduction below EPA action levels

What Makes Us Different

  • Compliance-First Approach

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

​Scientific Precision

  • Advanced monitoring equipment and calibrated data analysis​

Multi-Sector Expertise

  • Residential

  • Capital Improvement (CI)

  • Commercial

  • Education

  • Government

  • Healthcare

  • Industrial

Radon Levels Explained

image.png

Radon Testing in Chicago and Northern Illinois

​

Radon is a naturally occurring radioactive gas that enters buildings through cracks and openings in foundations. Illinois has some of the highest radon potential areas in the country, with Northern Illinois frequently reporting elevated indoor radon levels. Because radon cannot be seen, smelled, or tasted, testing is the only reliable way to determine whether a property has elevated concentrations. Illinois health guidance recommends taking corrective action when radon levels exceed 4.0 pCi/L. Licensed professional radon measurements provide accurate results and help homeowners determine whether mitigation is necessary. Testing is particularly important during real estate transactions, basement finishing projects, and routine home safety evaluations.

 

What is Radon?

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.

​

Health Risks: Why is Radon a Serious Threat?

  • #1 cause of lung cancer among non-smokers

  • Linked to thousands of U.S. deaths annually

  • Long-term exposure significantly increases risk

  • There are no immediate symptoms, making testing critical​​​​​​

NEW INFOGRAPHIC V2.0 - 6.2.2026.png
prepare for your radon test

다음은 라돈 측정 전과 측정 중에 따라야 할 단계입니다.

또는에스 환경 테스트폐쇄된 건물 라돈 측정을 위해 건물을 적절하게 준비합니다.

 

다음 지침을 따르는 것이 중요합니다.측정 정확도.  질문이나 우려 사항이 있으면 연락해 주십시오.또는에스 환경 테스트답과 해결책을 위해.

 

1.  이 테스트를 시작하기 전 12시간 동안 외부 문과 창문을 유지하십시오. 정상적인 출입을 위해 외부 문을 계속 사용하는 것이 허용되고 예상됩니다.  테스트 기간 동안 모든 창문, 문 및 기타 외부 개구부를 닫아 두십시오.

 

2.  온도 조절 장치를 화씨 72도(화씨 플러스 또는 마이너스 5도)로 설정하고 "자동"으로 설정합니다. 창문 열기, 문 열어두기, 온도 조절 장치 또는 팬 설정 변경 또는 외부 공기가 집으로 유입되도록 하는 것을 포함하되 이에 국한되지 않습니다.

 

3.  건물 밖으로 공기를 빼내는 기계 시스템의 작동은 테스트 결과에 부정적인 영향을 미칠 수 있습니다.  배치된 모든 테스트 장치는 방해받지 않아야 하며 위치는 변경해서는 안됩니다.  신고 대상또는에스 환경 테스트위에 설명된 조건을 어떤 식으로든 위반하게 만들 수 있는 상황이나 사건, 테스트 조건이나 결과에 영향을 미칠 수 있는 상황.  이러한 지침 중 따르지 않고 검사 결과가 잘못된 것으로 나타나면 재검사가 필요할 수 있습니다.

 

4.  라돈 모니터를 배치하고 테스트를 시작하면 변조 방지 씰이 모든 창에 설치됩니다. 측정이 끝날 때까지 제거해서는 안 됩니다.

 

5.  라돈 측정 시작 후 48시간이 지나면 측정이 종료되고 모니터 검색 시 (구두) 결과가 표시됩니다.  공식 보고서는 24시간 이내에 준비되어 전자(이메일, 팩스) 및 우편(요청 시)으로 전달됩니다.

 라돈 측정이 필요하십니까? 

​

  • 또는에스 환경 테스트 i귀하의 회사입니다.  단독 주택, 듀플렉스 및 콘도미니엄을 포함하는 주거용 가정 환경 라돈 측정을 전문으로 합니다.

  • 완화 회사를 찾고 있다면 r과 협력합니다.Putable 라돈 저감 회사가 작업을 완료합니다.

  • 부동산 거래에 관여하는 구매자입니까?  마감 전 라돈 측정을 찾고 계십니까?  노던 일리노이 라돈이 해결책입니다.

  • 집을 테스트한 지 2년(또는 그 이상)이 되었습니까?  연락처 북부 일리노이 라돈 가정 검사의 중요성과 라돈의 건강 위험으로부터 가족을 보호하는 방법에 대해 알아보십시오. 

  • 다양한 서비스 Northern Illinois Radon을 활용하십시오.제안 및 집안의 공기가 테스트되었으며 공기 중에 유해한 수준의 라돈이 없음을 확신하고 호흡하십시오!  저희가 제공하는 서비스는 다음과 같습니다.

    • 진단

    • 후속 조치

    • 신축 및 리모델링

    • 사전 및 사후 완화 측정

    • 단기 및 장기 측정

EPA Risk Assessments, compliance reporting, precise results for air, asbestos, lead-paint, soil, and water.

US Environmental Testing provides expert environmental testing services. We specialize in advanced indoor chemical and material identification, air quality testing, asbestos and lead-based paint inspections, heavy metal detection, mold and microbiological assessments, radon detection, and certified water testing. Our water testing covers Legionella, lead (Pb), PFAS, PFCAs, PFSS, PFSAs, n:2 FTSAs, and more. Visit our Water Testing page for full details.

Call to learn more and schedule an appointment 

  • Accepts insurance claims 

  • Guaranteed Customer Satisfaction

  • Provide free estimates

  • State and Federally Licensed Professionals

  • Laboratory Accredited by: AIHA LAP, LLC EMLAP

  • Laboratory Accreditations and Proficiencies:

    • AIHA LAP EMLAP/IHLAP/ELLAP​

    • AIHA LAP EMPAT/IHPAT/ELPAT

    • A2LA

    • CDC ELITE PROGRAM

    • Federal Government

    • NVLAP

    • State Qualified

Radon Levels Explained
 Radioactivity (and radon gas) results are measured in units of picocuries (pCi) [per liter of air] in the United States versus the International System of Units (SI), the Becquerel (Bq). A picocurie is a unit of radioactivity that is equivalent to one trillionth of a curie. In Perspective, one cure measures the rate of radioactive decay, specifically 3.7 x 10^10 disintegrations per second.
​
What is an Action Level?
The EPA recommends fixing homes when radon levels reach 4 pCi/L (150 Bq/m³) or higher. Since no known level of radon exposure is considered safe, the EPA also urges Americans to consider taking action when levels fall between 2 and 4 pCi/L (75–150 Bq/m³). (epa.gov)

Copilot_20260602_065818.png

Protect Your Home from Radon — Fast, Accurate, Certified Testing

Radon is the leading cause of lung cancer among non-smokers, and it could be present in your home right now.

The Environmental Specialist of US Environmental Testing offer professional radon testing and mitigation planning services across Chicagoland and Illinois, delivering accurate results and fast solutions you can trust. 

  • Operating according to EPA, ANSI, HUD, and OSHA-aligned protocols.

  • Serving EPA Regions 4,5, and 9.

  • Your trusted contractor for asbestos building inspection and testing,

  • Lead-based paint risk assessment, inspections and sampling,

  • Mold risk assessments, inspections, and sampling, radon detections,

  • Water Quality Testing and quality assurance reporting  

bottom of page