Commercial, Residential & Multi-Family Radon Testing & Mitigation
Testing for radon is the first step towards protecting the health of your family, your tenants, and your real estate investments.
SERVING CENTRAL & WESTERN UNITED STATES
- 25+ Years of Experience
- High-Accuracy Testing
- Fully Insured
- 25+ Years of Experience
- High-Accuracy Testing
- Fully Insured
Radon Is a Dangerous Radioactive Gas That You Can’t See or Smell
Class A Carcinogen
Prolonged radon exposure is the #1 cause of lung cancer for non-smokers, and #2 for smokers.
Testing is the only way to detect radon.
Radon is a colorless, odorless gas that seeps into buildings and homes undetected. We use state-of-the-art equipment to accurately measure radon levels.
Colorado & the Midwest have some of the highest radon levels in the nation
Colorado and the Midwest sit on granite, which naturally contains uranium that produces radon as it decays in the soil. Radon concentration levels are especially high in these areas during winter.
Hear What M.A.R.S. Environmental Clients Have to Say
We’ve been safeguarding air quality for over 20 years.
4.9
Based on 90 reviews
powered by Google
David Szamet
20:33 18 Feb 26
MARS / Jeanine is a true advocate for a homeowner. In a complex world with interests aligned against full recovery, Jeanine helped us understand what was in our home after the Eaton Fire and provided the appropriate guidance for real remediation.
She is fully committed to safety and doing things the right way. I have referred Jeanine to so many friend at this point and all of them have thanked me for the introduction.
If you are looking for a thorough and comprehensive hygienist then MARS is the choice.
She is fully committed to safety and doing things the right way. I have referred Jeanine to so many friend at this point and all of them have thanked me for the introduction.
If you are looking for a thorough and comprehensive hygienist then MARS is the choice.
Tim Newcomer
10:17 13 Feb 26
If you have mold or asbestos Jeanine and her team at Mars environmental or your people, they currently came to my house and tested for radon and I have a system put in now we can sleep well at night, knowing that our levels are now controlled with the unit that they put in thanks Jeanine at Mark environmental we’re keeping us safe
Jeff
00:29 12 Feb 26
MARS provided a very good experience for us. They were prompt, professional, knowledgeable, and always responsive and sympathetic to our needs. I highly recommend this company and the people who work there.
Patricia Smith
21:11 15 Dec 25
The staff was friendly and helpful from start to finish. They explained the process clearly, the technician answered all my questions on-site, and the results were provided promptly. While the results weren’t ideal, I’m glad I had the testing done and would use them again for future properties.”
A Google User
17:39 20 Nov 25
What a great company and wonderful people to be helped by. It's a family run business with knowledgeable, caring people who have information, compassion and support - they know the stress and angst that can be there with concerns of environmental issues in our homes. They are patient, kind, helpful and I feel supported knowing they are there for me should I need more help in the future. This itself feels good. I like the personal quality of their communication and business. They did testing for me and explained in detail the results so I feel clear about how to proceed. I highly recommend M.A.R.S. Good to have tested for VOC's and other items they thought needed testing. I wasn't sold unnecessary tests, I didn't feel taken advantage of, or pushed to do things that weren't necessary. All around a good and educational experience considering what it is.
Thank you Jeanine, Lindsay and Brooke. I hope it's okay to use your names! If not, tell me and I'll edit them out!
Thank you Jeanine, Lindsay and Brooke. I hope it's okay to use your names! If not, tell me and I'll edit them out!
Lara L
17:39 20 Nov 25
What a great company and wonderful people to be helped by. It's a family run business with knowledgeable, caring people who have information, compassion and support - they know the stress and angst that can be there with concerns of environmental issues in our homes. They are patient, kind, helpful and I feel supported knowing they are there for me should I need more help in the future. This itself feels good. I like the personal quality of their communication and business. They did testing for me and explained in detail the results so I feel clear about how to proceed. I highly recommend M.A.R.S. Good to have tested for VOC's and other items they thought needed testing. I wasn't sold unnecessary tests, I didn't feel taken advantage of, or pushed to do things that weren't necessary. All around a good and educational experience considering what it is.
Thank you Jeanine, Lindsay and Brooke. I hope it's okay to use your names! If not, tell me and I'll edit them out!
Thank you Jeanine, Lindsay and Brooke. I hope it's okay to use your names! If not, tell me and I'll edit them out!
Danielle Baldaro
04:46 19 Nov 25
Thank you Jeanine and the entire MARS team. Not sure what we would have done without your guidance through this time! I appreciate the work you’re doing to keep us all safe. Thank you to your hard work, honesty, attentiveness and dedication to this work.
Mark Johnson
12:55 29 Sep 25
Jeanine, the owner, demonstrated exceptional expertise in environmental testing after the fire at my house. She provided thorough explanations of how fire and smoke impact homes and air quality, and clearly outlined the necessary steps for restoration. Her professionalism and knowledge were impressive, and I appreciated her informative approach to getting my home back to a safe and healthy state.
Lori Halbach
14:39 19 Aug 25
MARS environmental is excellent, has great communication, and is reasonably priced. They were able to replace our radon system that was not up to code before we closed on our house.
Highly recommend!
Highly recommend!
Rachel Sondag
02:29 12 Aug 25
My heart goes out to anyone having to shop for post-disaster environmental testing, but I can enthusiastically recommend Jeanine and her team at M.A.R.S., especially to people dealing wildfire/WUI fire smoke damage.
Our house was in the heart of the Eaton Fire. It was left standing but smoke damaged. For four months, our insurer downplayed the health risks, offering to essentially wet wipe the walls and vacuum our bed after their own test found lead. They didn't address VOCs, SVOCs, heavy metals, though.
We knew that getting our own testing was the only way to push for a more thorough remediation. M.A.R.S came highly recommended by fire survivors in Colorado, also by local word of mouth, even by other industrial hygeniests and folks at United Policy Holders.
Jeanine fit us into one of the weekend trips she'd been doing to the Eaton Fire Scar this spring. And she tailored our tests to address our needs for our claim, and our financial limits. She asked for our prior test results so she could make sure she was only running tests we needed.
On the day, she showed up early. I was thrilled when she said we didn't need to enter the house. Also, her team wore protective gear. (For four months, everyone -- the insurance adjuster, other IH's, and others -- would enter the house casually, often with no masks or PPE, as if it were no big deal. I felt subtly peer-pressured to go in unmasked myself, to take and wash things, and now regret it.)
The results took a while, but the labs have been swamped, and M.A.R.S. was in touch. And when the results did come in, the level of detail and care with which Jeanine laid out her report was remarkable. And her explanations of results rigorously supported her recomendations. She included and referred to all the prior results. And she is up to date on current and emerging science and standards.
In many ways, the new results were bad news (the highest levels of Dioxins she'd seen in the area as well as Beryllium, which we're now learning has shown up in unprecedented levels in the Eaton Soot and Ash), but at least we are now armed with data.
I'm trying to think of constructive criticism, but I really just feel gratitude for Jeanine, Rebecca, and the whole team.
We're still going to have to fight to get the insurance to follow her recommendations so it's all still an ongoing nightmare. That said, the two moments of greatest relief I've felt since the fire were, first, when the M.A.R.S. team showed up at our house, and then later, when Jeannine sent our results. She's smart and talented, and I believe that she does this work because she genuinely cares about protecting people's health. She's a methodical hero :), a literal lifesaver!
Our house was in the heart of the Eaton Fire. It was left standing but smoke damaged. For four months, our insurer downplayed the health risks, offering to essentially wet wipe the walls and vacuum our bed after their own test found lead. They didn't address VOCs, SVOCs, heavy metals, though.
We knew that getting our own testing was the only way to push for a more thorough remediation. M.A.R.S came highly recommended by fire survivors in Colorado, also by local word of mouth, even by other industrial hygeniests and folks at United Policy Holders.
Jeanine fit us into one of the weekend trips she'd been doing to the Eaton Fire Scar this spring. And she tailored our tests to address our needs for our claim, and our financial limits. She asked for our prior test results so she could make sure she was only running tests we needed.
On the day, she showed up early. I was thrilled when she said we didn't need to enter the house. Also, her team wore protective gear. (For four months, everyone -- the insurance adjuster, other IH's, and others -- would enter the house casually, often with no masks or PPE, as if it were no big deal. I felt subtly peer-pressured to go in unmasked myself, to take and wash things, and now regret it.)
The results took a while, but the labs have been swamped, and M.A.R.S. was in touch. And when the results did come in, the level of detail and care with which Jeanine laid out her report was remarkable. And her explanations of results rigorously supported her recomendations. She included and referred to all the prior results. And she is up to date on current and emerging science and standards.
In many ways, the new results were bad news (the highest levels of Dioxins she'd seen in the area as well as Beryllium, which we're now learning has shown up in unprecedented levels in the Eaton Soot and Ash), but at least we are now armed with data.
I'm trying to think of constructive criticism, but I really just feel gratitude for Jeanine, Rebecca, and the whole team.
We're still going to have to fight to get the insurance to follow her recommendations so it's all still an ongoing nightmare. That said, the two moments of greatest relief I've felt since the fire were, first, when the M.A.R.S. team showed up at our house, and then later, when Jeannine sent our results. She's smart and talented, and I believe that she does this work because she genuinely cares about protecting people's health. She's a methodical hero :), a literal lifesaver!
House Six Design
01:08 30 Jul 25
Just hired MARS environmental to do a meth test for a home we have under contract. They got me setup with an appointment fast. The tester arrived on time, was friendly and explained everything. I recommend!
Rachel
20:50 25 Jul 25
I loved how responsive MARS was! I filled out the "contact us" form on their website and heard back via email within 24 hours. We scheduled a same-week appointment. I was emailed an estimate and invoice. They requested a deposit of $100 on a $400 invoice which seemed completely reasonable to me.
I received appointment reminders via text and email. The tester/employee showed up on time and I received a results phone call within 24 hours. I know I'll receive the emailed results within another work day, but they were able to call and give me the peace of mind sooner rather than later.
If you're looking for a quick and professional company, I'd highly recommend MARS Environmental.
I received appointment reminders via text and email. The tester/employee showed up on time and I received a results phone call within 24 hours. I know I'll receive the emailed results within another work day, but they were able to call and give me the peace of mind sooner rather than later.
If you're looking for a quick and professional company, I'd highly recommend MARS Environmental.
Rachel Courtney
20:50 25 Jul 25
I loved how responsive MARS was! I filled out the "contact us" form on their website and heard back via email within 24 hours. We scheduled a same-week appointment. I was emailed an estimate and invoice. They requested a deposit of $100 on a $400 invoice which seemed completely reasonable to me.
I received appointment reminders via text and email. The tester/employee showed up on time and I received a results phone call within 24 hours. I know I'll receive the emailed results within another work day, but they were able to call and give me the peace of mind sooner rather than later.
If you're looking for a quick and professional company, I'd highly recommend MARS Environmental.
I received appointment reminders via text and email. The tester/employee showed up on time and I received a results phone call within 24 hours. I know I'll receive the emailed results within another work day, but they were able to call and give me the peace of mind sooner rather than later.
If you're looking for a quick and professional company, I'd highly recommend MARS Environmental.
Jen A
13:40 18 Jul 25
Jeanine and Mars Environmental are Exceptional! They not only helped me with the scientific analysis to impress upon my insurance company to do what was right, and fair but they also held my hand throughout the process. Jeanine and her team went above and beyond to help us. We are very grateful.!
Artie Barcelo
21:52 10 Jul 25
Jeanine and her team are amazing. They are very thorough and will educate you on what they are testing for, why they are testing and the steps that need to be taken after. I highly recommend MARS for all your testing needs. Very friendly, professional and trained.
Hannah Parikh
05:58 24 Jun 25
They were very communicative upfront, and continue to be very responsive. They worked with our budget, doing necessary tests. They wrote an extensive report and included remediation recommendations based on the data, which is really hard to find these days. Super grateful for this team!
Lindsy Rossen
14:18 13 Jun 25
What a great company! My husband and I are currently under contract with a home. We had a last minute mold inspection and they were able to schedule us in the next day. Very little notice! Linzy did an amazing and thorough job! She knows what she is doing and very pleasant to work with. We are very grateful they were able to squeeze us in their busy schedule. 100% recommend!
GatorJosh01
14:52 20 May 25
Mike Barnhill
22:54 06 May 25
Thanks Jeanine and Lindsey!
Monica Piguee
12:32 15 Apr 25
Jeanine was amazing to work with and offered a quick response every time we had a question. Fair pricing, quick turn around on the job and we had the best Radon Guy, Geovanni, come out to put in our new system. Thank you Jeanine for helping us keep our family safe and healthy!!!
Mary D. McGinnis
20:12 10 Apr 25
Jeanine has been the lighthouse guiding us through the tumultuous storm following the damage to our home from the Eaton Fire. Her deep knowledge and experience in fire science has helped us decide on a course of action in dealing with the damage, and provided us with a view to a way forward.
Laura Wohlfort
19:54 01 Apr 25
I recently paid for a meth test for a house I’m about to purchase. Jeanine was early to the appointment, professional, and worked quickly but thoroughly. I highly recommend this company for any environmental testing you need done.
Karen Yoho
19:58 20 Mar 25
Jeanine is a very hardworking individual who strives for excellence ALL the time! I really appreciate that she took the time to correct our report, even though she was busy traveling to another state for work. Her work is very thorough. I will defiantly use her again because she is the best!!!
Jonathan Greschler
17:10 19 Mar 25
These folks care and do great work. They take responsiblity for the work they do and are not satisfied until you are satisfied.
MARIA GRANADOS
13:27 22 Feb 25
These guys are great, they explained the process, brought in a team of people to test all my projects surfaces that were required and were able to get results back within 24 hours. Customer service is on point!
FTR Coaching
20:43 14 Feb 25
Amazing service. Excellent education. I have full confidence that my concerns will be completely addressed. Highly recommend if you’re worried about your air quality!
Jessica Urdinola
20:32 30 Jan 25
Great service! The work was done efficiently and the tech explained everything. Highly recommend.
Mark Kruse
15:23 24 Jan 25
Such a fantastic company. They did radon mitigation for a property and knocked it out of the park. It was not an easy space to mitigate in, but they figured out the perfect solution. Timely and price was good as well.
Joel Egelman
19:59 10 Jan 25
Fantastic group of people. They are fast and friendly. We are an asbestos removal company and love referring them out to clients. Keep up the great work!
Adrienne S.
17:42 14 Dec 24
Certified IAQ’s process for environmental testing was an easy and straight forward process. We will use them again in the future. Thank you again Linzy and Jeanine!
Radon Testing & Mitigation Process
1
Quote & Schedule
Consult with an air quality professional for an instant quote & service appointment.
2
Air Testing
- Single Family Residential: We use a Continuous Radon Monitor (CRM) for most testing, and provide aircheck devices after mitigation at no charge.
- Commercial: After distributing advance notice to occupants, a certified technician positions aircheck devices in all necessary levels and rooms of the property in compliance with state and federal standards for multi-family, HUD housing, school & childcare facilities.
3
Fast Results
After 48 hours of closed conditions, a technician returns to process data & remove equipment.
- Single Family Residential: Immediate results upon pickup
- Commercial: Lab results available next business day
The EPA action level for radon is 4.0 pCi/L; however, we recommend mitigation between 2-4 pCi/L as radon fluctuates over time, and levels increase in the winter due to the frozen ground trapping radon in homes.
Commercial & Residential
Radon
Services
Commercial & Residential Radon Services
New Construction
Radon-Resistant System Design
Testing & Mitigation
- Single Family Residential
- Commercial
- Multi-family Properties
- Housing & Urban Development (HUD)
- Schools & Childcare Facilities
Passive Radon Mitigation Systems
HRV Radon Mitigation Systems
Vapor Barriers
Commercial & Residential
Radon
Services
Commercial & Residential Radon Services
New Construction
Radon-Resistant System Design
Testing & Mitigation
- Single Family Residential
- Commercial
- Multi-family Properties
- Housing & Urban Development (HUD)
- Schools & Childcare Facilities
Passive Radon Mitigation Systems
HRV Radon Mitigation Systems
Vapor Barriers
Are you and your family safe?
Find out fast with on-site results.
Get the Best WITH
M.A.R.S. Environmental
Get the Best WITH
M.A.R.S. Environmental
M.A.R.S. Environmental
5-Year Full Fan Replacement Warranty
5-Year Full Fan Replacement Warranty
Complimentary
Certified Retesting Kits
Complimentary
Certified Retesting Kits
Certified Retesting Kits
Get the Best WITH
M.A.R.S. Environmental
Get the Best WITH
M.A.R.S. Environmental
M.A.R.S. Environmental
5-Year Full Fan Replacement Warranty
5-Year Full Fan Replacement Warranty
Complimentary
Certified Retesting Kits
Complimentary
Certified Retesting Kits
Certified Retesting Kits
The lowest level of a building is most likely to test high
for radon. Who spends the most time in your basement?
The lowest level of a building is most likely to test high for radon. Who spends the most time in your basement?
Let’s make sure it’s safe down there.
Radon Testing Standards & Regulations
Federal Radon Measurement Standards
According to the EPA & American Association of Radon Scientists & Technologists:
- 4.0 pCi/L or Higher → Recommend Mitigation
- 2.0 – 3.9 pCi/L → Consider Mitigation
Federal Homebuying Guidelines
The EPA, U.S. Surgeon General, and CDC strongly recommend that all homebuyers conduct indoor radon testing before purchasing or moving into a new home.
Colorado State Radon Policies for Residential & Commercial
| Credential Required |  | Private Certification with State license |
| Radon Standards in Effect | | ANSI-AARST |
| Homebuyer Protection Required | | Notification & Disclosure |
| Radon System Required for New Homes |  | No |
| N/A | |
| N/A | |
| School Testing Required | | Yes |
| Radon System Requirement for New Schools | | Yes |
Commercial, Multifamily & Mixed-Use Buildings
Tenant Rights
Landlords & property management companies are required to test all rental properties for radon. Tenants can vacate a lease with no penalty if high radon levels are not mitigated within 180 days.
Lease Disclosures
Property-specific radon disclosures must be included in lease agreements and provided to tenants prior to signing.
Rental Permits
Colorado requires a recent radon testing report for rental property permits & renewals.
Single Family Residential
Colorado Homebuyer Rights
Colorado law mandates Homebuyer Notification & Disclosure for radon.
New Construction in Boulder County, CO
These local municipalities require new single-family homes to be built with Radon-Resistant Construction:
- The City of Boulder
- The City of Longmont
- The City of Louisville
- The Town of Erie
- The Town of Superior
- Unincorporated Boulder County
Nebraska State Radon Policies for Residential & Commercial
New Construction in Nebraska
Nebraska Revised Statute 76-3504 requires all new construction that is built after 2019 and that will be regularly occupied by people to be built using radon resistant new construction (RRNC).
-
- Local building codes must enforce these standards
- RRNC includes three approaches: barrier methods, reduction in radon entry driving forces, and passive system installation
- “New construction” includes single- and multi-family homes and any building used for commercial, industrial, educational, or medical purposes
- Read the Nebraska Radon Resistant New Construction (RRNC) law summary for more details and exemptions
Testing is the ONLY way to know if radon is a threat to your health, your family, and your property.
FAQs
It is important to test for radon prior to any real estate transaction and then again every 2-3 years to ensure safety and verify that the mitigation system is operating properly.
With a passive system built into the foundation, you avoid visible equipment on the building exterior and take advantage of an organic venting solution that doesn’t require electricity or contribute to utility bills. At most, the addition of a fan can activate the system to keep radon levels at a minimum. The cost of fixing a radon problem can be significantly more expensive than preventing one.
Radon is measured in picocuries/liter (pCi/L) and the EPA standard is < 4.0 pCi/L. Our mitigation services come with the guarantee that your levels will stay at or below 3.9 pCi/L.
If radon testing reveals elevated levels, don’t panic. M.A.R.S. Environmental can design and install a custom system tailored to your property. Radon mitigation systems can effectively reduce radon concentrations. These systems typically involve venting radon gas from the soil beneath your property out to the exterior so it can’t affect indoor air quality.
Well-maintained mitigation systems and fan components should last for many years, but it is important to retest your property every 2-3 years and inspect the system to verify proper function.
We Offer Radon Testing & Mitigation in:
- Colorado
- Nebraska
- California
- Wyoming
- Iowa
Our Locations
-
call us
720-388-8448 -
Colorado Location:
580 Burbank St, Unit 115, Broomfield, CO 80020
-
Nebraska Location:
3909 Cumming St, Ste 201, Omaha, NE 68131
