What is Radon Gas?
#1 Cause of Lung Cancer (Among people who have never smoked)
#2 Leading Cause of lung cancer
among current and former smokers.
Radon:
The "Silent Killer"
Properties of Radon Gas
C - Colorless
O - Odorless
T - Tasteless
I - Inert [chemically]
N - Naturally occurring soil gas
that is carcinogenic.
It is naturally occurring and is present in low levels in the air we breathe outdoors (typically around 0.4 pCi/L). The EPA projects that indoor radon levels may be between 1.3 pCi/L and 4.0 pCi/L depending on your home.
Latency Period for radon exposure cancer.
Radon possesses properties which make its carcinogenic properties unnoticeable for many years.
The latency period for lung cancer caused by radon exposure has been approximated to be 5 to 25 years after initial exposure. (epa.gov)
Children are more vulnerable to radon exposure.
Children are more vulnerable to the harmful effects of radon gas because their lungs are still developing and they breathe faster than adults, which means they can inhale more radon over the same period. Additionally, children typically spend more time indoors—where radon concentrations are higher—especially in lower levels of homes like basements where radon tends to accumulate. Over time, this increased exposure can raise their risk of developing lung problems, including cancer, later in life.
Environmental Consulting, Inspection, Detection and Mitigation Strategy Design
US Environmental Testing offers expert environmental testing services, including indoor advanced chemical and material identification, air quality testing, asbestos inspection, lead-based paint inspections, heavy metal detection, mold and microbiological assessments, radon detection, and certified water testing for 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
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Accepts insurance claims
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Guaranteed Customer Satisfaction
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Provide free estimates
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State and Federally Licensed Professionals
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Laboratory Accredited by: AIHA LAP, LLC EMLAP
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Laboratory Accreditations and Proficiencies:
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AIHA LAP EMLAP/IHLAP/ELLAP
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AIHA LAP EMPAT/IHPAT/ELPAT
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A2LA
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CDC ELITE PROGRAM
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Federal Government
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NVLAP
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State Qualified
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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 homes be fixed if the radon level is 4 pCi/L [picocuries per liter of air] or 150 Bq/m3 [becquerels per meter cubed or greater]. Because there is no known safe level of exposure to radon, the EPA also recommends that Americans consider fixing their home for radon levels between 2 pCi/L and 4 pCi/L
(75 - 150 Bq/m3). (epa.gov)
Markets We Support
AGRICULTURE
Radon may build up occurs in barns, greenhouses, storage units, and farmhouses—particularly those located in areas with high natural uranium levels in the soil. Long-term exposure to elevated radon concentrations can threaten the health of farmers, workers, and animals.
Additionally, radon can enter groundwater sources used for irrigation or livestock, releasing into the air during use. Poorly ventilated agricultural buildings are especially at risk for dangerous radon accumulation.
BUSINESS
Radon isn’t just a residential risk—it affects workplaces too. Invisible and odorless, radon gas can accumulate in offices, warehouses, and commercial buildings, putting employees and customers at risk. Show your commitment to health and safety with professional radon testing. It’s fast, affordable, and protects your people—and your business.
COMMERCIAL
Commercial Radon Detection Services – Protect Your Building, Employees, and Business
Radon gas is the leading cause of lung cancer among non-smokers—and it can accumulate undetected in commercial buildings, offices, schools, warehouses, and healthcare facilities.
At US Environmental Testing, we specialize in professional radon detection for commercial properties across Illinois, Indian, Michigan, and Wisconsin. Our certified inspectors use advanced testing equipment to ensure your building meets EPA safety standards and helps you stay compliant with OSHA and local health regulations.
Investing in commercial radon testing protects your employees, reduces liability, and demonstrates your commitment to a healthy indoor environment. Fast, accurate, and fully documented—get peace of mind and protect your business today.
Schedule your commercial radon inspection now—early detection saves lives and safeguards your bottom line.
DAYCARES & DCFS LICENSING
Radon Testing for Daycare Centers – DCFS Compliance Made Easy
Illinois DCFS requires radon testing for all licensed daycare centers. Radon is a hidden health risk, especially for young children.
US Environmental Testing provides fast, certified radon inspections with full reports to meet DCFS licensing requirements.
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DCFS-Compliant
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Licensed Inspectors
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Fast Turnaround
Protect the children in your care—schedule your radon test today.
EDUCATION
Radon Testing in Illinois Schools – Protect Students & Stay Compliant
Radon, a leading cause of lung cancer, can build up in classrooms, risking student and staff health. Illinois law (105 ILCS 5/10-20.47) encourages schools to test for radon every 5 years and report results to the State Board of Education.
US Environmental Testing offers certified, EPA-approved radon testing with fast, accurate results and clear reports to help schools meet state guidelines.
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Compliant with Illinois School Radon Statute
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Certified Inspectors
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Fast Turnaround & Detailed Reports
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Serving K–12, Early Childhood, and Special Ed
Keep your school safe—schedule radon testing today.
GOVERNMENT
Trusted, experienced, certified services for government buildings, schools, and public facilities. We specialize in:
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Air quality & mold testing
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Asbestos & lead paint: clearance, inspections, monitoring, and risk assessments
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Radon detection & heavy metal screening
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Water testing for Lead (Pb), Legionella, PFAS, PFCAs, PFSS, PFSAs, n:2 FTSAs, and more
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Advanced chemical & material identification
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Organic Compounds identification and mitigation strategy design
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Volatile Organic Compounds Identification
Get a quote today—protect your facility and meet all regulatory requirements.
HEALTHCARE
Comprehensive Air and Water Quality Testing for Healthcare Facilities
At US Environmental Testing, we specialize in expert indoor air quality testing and certified water quality analysis designed specifically for clinics, dental offices, hospitals, medical offices, nursing homes, day care centers, restaurants, and other sites which monitor lead or heavy metals, Lead (Pb), Legionella, PFAS, PFCAs, PFSS, PFSAs, n:2 FTSAs, Radon (in water) and more.
Our thorough testing services identify airborne pathogens, mold, VOCs, Legionella, heavy metals, and other chemical contaminants to ensure your facility meets all EPA, OSHA, and healthcare regulatory standards.
Maintaining superior air and water quality is essential to protect patient health, prevent infections, and comply with strict healthcare guidelines. Our precise results and actionable insights empower healthcare providers to create safer, healthier environments.
Don’t risk compliance or patient safety. Schedule your professional air and water quality testing today!
Contact US Environmental Testing now for fast, reliable service tailored to healthcare facilities.
Get a free consultation and ensure your facility’s environment is safe and compliant!
HUD & HEALTHY HOMES
US Environmental Testing – HUD
US Environmental supports the Healthy Homes Lead, Radon & Environmental Revitalization Initiatives. As an active member of the Healthy Homes Grant Program, US Environmental is helping to improve the HUD Healthy Homes Program, by providing EPA licensed asbestos building inspections, EPA licensed lead-based paint risk assessments, IEMA certified radon detections, and full-service environmental consulting. Our licensed professionals help housing authorities, municipalities, and community programs identify and reduce environmental hazards in homes and multi-family units.
We specialize in HUD-compliant testing and reporting, ensuring projects meet all federal guidelines for asbestos, lead hazard control, microbial / mold risk assessment, radon detection, and indoor environmental health.
Trusted by public housing agencies across Illinois—we deliver fast, accurate results to keep families safe and projects on track.
Partner with US Environmental Testing for your HUD Healthy Homes grant needs—schedule a consultation today.
INDUSTRIAL COMPLIANCE
Industrial Environmental Compliance Testing – Asbestos, Lead Paint, Mold, Radon & VOCs
Ensure your industrial facility meets all regulatory requirements with US Environmental Testing’s comprehensive environmental compliance services. We provide certified asbestos inspections, lead-based paint assessments, mold inspections, radon detection, and VOC (volatile organic compounds) testing specifically for industrial buildings and manufacturing sites.
Our expert testing helps you comply with OSHA, EPA, and state regulations by identifying hazardous materials and airborne contaminants that pose health and safety risks to your workforce. Detailed reports and professional guidance support your facility’s ongoing environmental health compliance and risk management.
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Certified inspections for asbestos and lead-based paint per regulatory standards
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Mold and radon testing aligned with EPA and OSHA guidelines
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VOC testing to monitor and control chemical exposure risks
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Protect employees and avoid costly fines—partner with US Environmental Testing for your industrial compliance testing needs. Schedule your inspection today!
INSURANCE CLAIMS
Certified Environmental Testing for Insurance Claims
Ready to file your insurance claim for property damage or environmental hazards? US Environmental is ready to assist! We are prepared for:
Asbestos, Lead, Mold, Radon, Sick Building detection and mitigation strategy design, Water Infiltration, and more!
Allow
Receive an insurance-ready report accepted by adjusters and carriers and restore your property back to new ASAP
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Certified & Compliant with EPA/OSHA
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Detailed Reports for Claims & Restoration
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Fast Turnaround
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Serving all Markets
MULTI-FAMILY DWELLINGS
Environmental Testing for Multi-Family Properties – HUD & Landlord Compliance
US Environmental Testing provides certified asbestos, lead paint, mold, radon, and VOC inspections for multi-family dwellings, including apartments, condos, and HUD-assisted housing.
We help developers, housing authorities, and landlords meet HUD, EPA, and local health codes with fast, accurate testing and clear, compliant reports.
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HUD-Compliant Lead & Asbestos Inspections
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Mold, Radon & VOC Testing for Tenant Safety
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Detailed Reports for Code & Grant Compliance
Protect your tenants and your property—schedule your inspection with US Environmental Testing today.
REAL ESTATE
Environmental Testing for Real Estate Transactions –
Asbestos, Lead Paint, Mold, Radon & VOC Inspections
Ensure a safe and smooth property transfer with certified environmental testing for real estate transactions. At US Environmental Testing, we provide comprehensive asbestos inspections, lead-based paint assessments, mold inspections, radon detection, and VOC (volatile organic compounds) testing for residential, commercial, and multi-family properties.
Our licensed inspectors deliver fast, accurate testing and clear, easy-to-understand reports that help agents, attorneys, buyers, developers, and sellers, meet disclosure requirements, avoid liability, and negotiate confidently. All services meet or exceed EPA, HUD, and local compliance standards.
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Pre-Sale & Pre-Purchase Environmental Inspections
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Certified Reports for Disclosure & Risk Management
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Fast Turnaround for Time-Sensitive Closings
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Serving Realtors, Brokers & Property Owners Across Hawaii, Illinois, Indiana, South Carolina, Wisconsin,
PROPERTY MANAGEMENT
US Environmental Testing provides certified asbestos, lead paint, mold, radon, and VOC inspections for apartments, condos, and HUD-assisted properties. Our testing meets HUD, EPA, and local compliance standards—ideal for landlords, HOAs, and property managers.
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Certified Inspections for HUD & EPA Compliance
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Fast Reports for Apartments, Condos & Townhomes
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Protect Residents & Reduce Liability
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Managers striving to protect tenants from radon and follow the Illinois 420 ILCS 46 / Radon Awareness Act (1/1/24).
Schedule your inspection today with US Environmental Testing—trusted across HI, IL, IN, WI, SC
Licenses & Accreditations
Certified Environmental Testing for Real Estate & Government Compliance
US Environmental Testing provides certified inspections for asbestos, lead, mold, radon, and VOCs. Our methods meet all ANSI, EPA, HUD, federal, state, and local standards—ensuring full compliance for real estate transactions, property sales, and government procurement. Trusted by agents, buyers, sellers, and municipalities alike.
What are our clients saying about us?
Tony O.
"Tim is one of the best professionals I have ever worked with. Did the work fast and accurate. I recommend him 100%."
13 JUNE 2025
"Excellent customer service. Very professional. I would recommend them to others."
19 SEPTEMBER 2024
Tina F.
Kristy M.
"Tim did an amazing job conducting radon and mold inspections in my house. He took the time to help me with my concerns and answer my questions. He spent a lot of time explaining the results of my reports and I appreciated it. I recommend you use this company."
4 JUNE 2024
Joey P.
"Working with Tim at US Environmental Testing / Northern Illinois Radon was a great experience from start to finish. Tim is a master of his field and helped answer any questions I had along the (home) sales process. I would highly recommend Tim for any radon needs in the future."
Thanks Tim
13 JUNE 2025
Soofia A.
"Pleasure working with Tim - Timely follow up!"
Thanks Tim
28 May 2024
Gerald O.
"Tim is knowledgeable and does a complete, thorough job. He recommended a solution for the problem right away, following the appropriate State regulations.
Laboratory results were returned QUICK, less than 24 hours! So we were able to address the issues found. I would definitely work with Tim at US Environmental Testing / Northern Illinois Radon again."
18 MAY 2024
Yavor G.
13 JUNE 2024
"I would highly recommend the company and specifically Tim, who is extremely knowledgeable and experienced! He did an amazing job on time and on budget! He is a rare breed of service professionals, who knows exactly what to do and how to do it! He is also highly intelligent and able to explain everything in a way which is easily understood! I would always use his service in the future and so should you IMO!"
20 MARCH 2024
Mike L.
"Tim did an excellent job in working with me on reviewing my house for potential mold issues. We discussed various problems and resolved all issues. I thank Tim for his excellent professionalism and handling of the issue. I highly recommend US Environemtal Testing / Northern Illinois Radon."
Alicia W.
:"Great customer service, excellent communication and we also appreciated the explanation of process!
Thank you, Tim, and US Environmental Testing!
We highly recommend their services!
20 MARCH 2024
Yavor G.
13 JUNE 2024
"I would highly recommend the company and specifically Tim, who is extremely knowledgeable and experienced! He did an amazing job on time and on budget! He is a rare breed of service professionals, who knows exactly what to do and how to do it! He is also highly intelligent and able to explain everything in a way which is easily understood! I would always use his service in the future and so should you IMO!"
Mike L.
"Tim did an excellent job in working with me on reviewing my house for potential mold issues. We discussed various problems and resolved all issues. I thank Tim for his excellent professionalism and handling of the issue. I highly recommend US Environemtal Testing / Northern Illinois Radon."
Alicia W.
"Great customer service, excellent communication and we also appreciated the explanation of process!
Thank you, Tim, and US Environmental Testing!
We highly recommend their services!
29 MARCH 2024
1 April 2024
Christian M.
"US Environmental Testing was fast, efficient, and very knowledgeable. Highly recommend!
1 MARCH 2024
Richie S.
"Tim was great to work with. Very professional and very informative. I highly recommend US Environemtal Testing / Northern Illinois Radon."
28 FEBRUARY 2024
Krystal W.
"Just want to say that Tim and his services for radon detection we received for our new home was amazing!
Extremely efficient, quick response to questions we had, very knowledgeable.
We had a great experience with Tim and US Environmental Testing!
10 out of 10 for sure!
We highly recommend their services!
20 MARCH 2024
Ryed D.
"Very accommodating and understanding of the whole process of permits and village requirements."
Thank you Tim
