State radon programs vary: some run their own testing and kit programs, some designate the work to a health or environmental agency or a university, and requirements around licensing, disclosure and certification differ by state. Program pages change, so check a detail on the state's own page before you rely on it.
Resources
State radon programs
Every U.S. state and DC runs, or designates, a radon program. Each entry below shows only what that program's own page stated when Radon411 read it, and the date it was read.
What “checked” means here
All 50 states and DC
| Official page | ||||||
|---|---|---|---|---|---|---|
| Alabama | Alabama Radon Program | Checked September 25, 2026 | Stated on the page | Not stated | Region 4: Southeast | AL program page |
| Alaska | Alaska Radon Program | Checked September 25, 2026 | Stated on the page | Not stated | Region 10: Pacific Northwest | AK program page |
| Arizona | Arizona Department of Health Services | Checked September 25, 2026 | Not stated | Not stated | Region 9: Pacific Southwest | AZ program page |
| Arkansas | Arkansas Department of Health | Checked September 25, 2026 | Not stated | Not stated | Region 6: South Central | AR program page |
| California | California Indoor Radon Program | Checked September 25, 2026 | Stated on the page | Yes, per the page | Region 9: Pacific Southwest | CA program page |
| Colorado | Colorado Department of Public Health and Environment | Checked September 25, 2026 | Stated on the page | Yes, per the page | Region 8: Mountains and Plains | CO program page |
| Connecticut | Radon Program | Checked September 25, 2026 | Stated on the page | No, per the page | Region 1: New England | CT program page |
| Delaware | Delaware Division of Public Health Radon Office | Checked September 25, 2026 | Stated on the page | Not stated | Region 3: Mid-Atlantic | DE program page |
| District of Columbia | Radon Test Kit Program | Checked September 25, 2026 | Stated on the page | Not stated | Region 3: Mid-Atlantic | DC program page |
| Florida | Florida’s Radon Program | Checked September 25, 2026 | Stated on the page | Yes, per the page | Region 4: Southeast | FL program page |
| Georgia | Georgia Attorney General's Consumer Protection Division | Checked September 25, 2026 | Stated on the page | No, per the page | Region 4: Southeast | GA program page |
| Hawaii | Not checked | Not yet verified | Not checked | Not checked | Region 9: Pacific Southwest | HI program page |
| Idaho | DHW Environmental Health Program | Checked September 25, 2026 | Stated on the page | Not stated | Region 10: Pacific Northwest | ID program page |
| Illinois | IEMA-OHS Radon Program | Checked September 25, 2026 | Not stated | Yes, per the page | Region 5: Great Lakes | IL program page |
| Indiana | Indiana Department of Health | Checked September 25, 2026 | Stated on the page | Yes, per the page | Region 5: Great Lakes | IN program page |
| Iowa | Iowa HHS Radon Program | Checked September 25, 2026 | Stated on the page | Yes, per the page | Region 7: Midwest | IA program page |
| Kansas | Kansas Radon Program | Checked September 25, 2026 | Not stated | Not stated | Region 7: Midwest | KS program page |
| Kentucky | Kentucky Board of Radon Safety | Checked September 25, 2026 | Not stated | Not stated | Region 4: Southeast | KY program page |
| Louisiana | Louisiana Department of Environmental Quality | Checked September 25, 2026 | Not stated | Not stated | Region 6: South Central | LA program page |
| Maine | Maine Radiation Control Program | Checked September 25, 2026 | Not stated | Yes, per the page | Region 1: New England | ME program page |
| Maryland | Maryland Department of Health | Checked September 25, 2026 | Stated on the page | Not stated | Region 3: Mid-Atlantic | MD program page |
| Massachusetts | Radon Unit | Checked September 25, 2026 | Not stated | Not stated | Region 1: New England | MA program page |
| Michigan | Michigan Indoor Radon Program | Checked September 25, 2026 | Not stated | No, per the page | Region 5: Great Lakes | MI program page |
| Minnesota | MDH Indoor Air Unit | Checked September 25, 2026 | Not stated | Yes, per the page | Region 5: Great Lakes | MN program page |
| Mississippi | Mississippi Radon Program | Checked September 25, 2026 | Not stated | Not stated | Region 4: Southeast | MS program page |
| Missouri | Missouri Radon Program | Checked September 25, 2026 | Stated on the page | Not stated | Region 7: Midwest | MO program page |
| Montana | Radon Control Program | Checked September 25, 2026 | Stated on the page | No, per the page | Region 8: Mountains and Plains | MT program page |
| Nebraska | Office of Environmental Health Hazards & Indoor Air | Checked September 25, 2026 | Stated on the page | Yes, per the page | Region 7: Midwest | NE program page |
| Nevada | Nevada Radon Education Program | Checked September 25, 2026 | Stated on the page | Not stated | Region 9: Pacific Southwest | NV program page |
| New Hampshire | New Hampshire Radon Program | Checked September 25, 2026 | Stated on the page | No, per the page | Region 1: New England | NH program page |
| New Jersey | Radon Section | Checked September 25, 2026 | Stated on the page | Yes, per the page | Region 2: New Jersey, New York, Puerto Rico, U.S. Virgin Islands | NJ program page |
| New Mexico | New Mexico Indoor Radon Outreach Program | Checked September 25, 2026 | Stated on the page | No, per the page | Region 6: South Central | NM program page |
| New York | Radon Program | Checked September 25, 2026 | Stated on the page | No, per the page | Region 2: New Jersey, New York, Puerto Rico, U.S. Virgin Islands | NY program page |
| North Carolina | North Carolina Radon Program | Checked September 25, 2026 | Not stated | See the page's words | Region 4: Southeast | NC program page |
| North Dakota | North Dakota Department of Environmental Quality | Checked September 25, 2026 | Stated on the page | Not stated | Region 8: Mountains and Plains | ND program page |
| Ohio | Radon Education and Licensing Program | Checked September 25, 2026 | Stated on the page | Yes, per the page | Region 5: Great Lakes | OH program page |
| Oklahoma | Department of Environmental Quality | Checked September 25, 2026 | Not stated | Not stated | Region 6: South Central | OK program page |
| Oregon | Oregon Radon Awareness Program | Checked September 25, 2026 | Stated on the page | Not stated | Region 10: Pacific Northwest | OR program page |
| Pennsylvania | Radon Division | Checked September 25, 2026 | Stated on the page | Yes, per the page | Region 3: Mid-Atlantic | PA program page |
| Rhode Island | Radon Control Program | Checked September 25, 2026 | Not stated | Yes, per the page | Region 1: New England | RI program page |
| South Carolina | South Carolina Radon Program | Checked September 25, 2026 | Stated on the page | Not stated | Region 4: Southeast | SC program page |
| South Dakota | Department of Agriculture and Natural Resources | Checked September 25, 2026 | Stated on the page | Not stated | Region 8: Mountains and Plains | SD program page |
| Tennessee | Tennessee Radon Program | Checked September 25, 2026 | Stated on the page | Not stated | Region 4: Southeast | TN program page |
| Texas | Texas Radon Group | Checked September 25, 2026 | Stated on the page | No, per the page | Region 6: South Central | TX program page |
| Utah | Indoor Radon Program | Checked September 25, 2026 | Not stated | Not stated | Region 8: Mountains and Plains | UT program page |
| Vermont | Radon Program | Checked September 25, 2026 | Stated on the page | Not stated | Region 1: New England | VT program page |
| Virginia | VDH Radon Program | Checked September 25, 2026 | Stated on the page | See the page's words | Region 3: Mid-Atlantic | VA program page |
| Washington | Radon Program | Checked September 25, 2026 | Stated on the page | Not stated | Region 10: Pacific Northwest | WA program page |
| West Virginia | OEHS Radon Program | Checked September 25, 2026 | Stated on the page | Yes, per the page | Region 3: Mid-Atlantic | WV program page |
| Wisconsin | Wisconsin Department of Health Services | Checked September 25, 2026 | Stated on the page | No, per the page | Region 5: Great Lakes | WI program page |
| Wyoming | Wyoming Radon Program | Checked September 25, 2026 | Not stated | Not stated | Region 8: Mountains and Plains | WY program page |
Each state's program, in its own words
Pick a state to read what its program's own page states, or show every state.
Alabama: Alabama Radon Program
Checked against the official page on September 25, 2026
Radon411 fetched this program's own page on September 25, 2026 and recorded only what its text states, in its own words. It is a record of what the page said that day, not an endorsement of the program and not a certification of anyone.
Alabama Department of Public Health
- Official page
- https://www.alabamapublichealth.gov/radon/index.html
- Phone
- (334) 290-6244
- Not stated on the page we checked
- Free or discounted test kits
Due to high demand, the free radon test kits are currently unavailable.
- Licensing or certification of radon professionals
- Not stated on the page we checked
- Disclosure requirement
- Not stated on the page we checked
- Checked on
- September 25, 2026
Alaska: Alaska Radon Program
Checked against the official page on September 25, 2026
Radon411 fetched this program's own page on September 25, 2026 and recorded only what its text states, in its own words. It is a record of what the page said that day, not an endorsement of the program and not a certification of anyone.
Alaska Division of Geological & Geophysical Surveys
- Official page
- https://dggs.alaska.gov/hazards/radon.html
- Phone
- 907-269-6401
- paul.goodfellow@alaska.gov
- Free or discounted test kits
Please register your interest in a free radon testing kit on our website and we will resume mailing out tests starting in December 2026.
- Licensing or certification of radon professionals
- Not stated on the page we checked
- Disclosure requirement
- Not stated on the page we checked
- Checked on
- September 25, 2026
Arizona radon program
Checked against the official page on September 25, 2026
Radon411 fetched this program's own page on September 25, 2026 and recorded only what its text states, in its own words. It is a record of what the page said that day, not an endorsement of the program and not a certification of anyone.
Arizona Department of Health Services
- Phone
- Not stated on the page we checked
- Not stated on the page we checked
- Free or discounted test kits
- Not stated on the page we checked
- Licensing or certification of radon professionals
- Not stated on the page we checked
- Disclosure requirement
- Not stated on the page we checked
- Checked on
- September 25, 2026
Arkansas radon program
Checked against the official page on September 25, 2026
Radon411 fetched this program's own page on September 25, 2026 and recorded only what its text states, in its own words. It is a record of what the page said that day, not an endorsement of the program and not a certification of anyone.
Arkansas Department of Health
- Official page
- https://healthy.arkansas.gov/programs-services/public-health-safety/is-my-home-safe/radon-gas/
- Phone
- 501-661-2621
- ADH.EPI.Radon@arkansas.gov
- Free or discounted test kits
- Not stated on the page we checked
- Licensing or certification of radon professionals
- Not stated on the page we checked
- Disclosure requirement
- Not stated on the page we checked
- Checked on
- September 25, 2026
California: California Indoor Radon Program
Checked against the official page on September 25, 2026
Radon411 fetched this program's own page on September 25, 2026 and recorded only what its text states, in its own words. It is a record of what the page said that day, not an endorsement of the program and not a certification of anyone.
California Department of Public Health
- Phone
- 1-800-745-7236
- Radonprogram@cdph.ca.gov
- Free or discounted test kits
Discounted test kits can be purchased through our partner laboratory, Alpha Energy, for $14.95.
- Licensing or certification of radon professionals
The Radon Program certifies all radon service providers operating in California.
- Disclosure requirement
- Not stated on the page we checked
- Checked on
- September 25, 2026
Colorado radon program
Checked against the official page on September 25, 2026
Radon411 fetched this program's own page on September 25, 2026 and recorded only what its text states, in its own words. It is a record of what the page said that day, not an endorsement of the program and not a certification of anyone.
Colorado Department of Public Health and Environment
- Official page
- https://cdphe.colorado.gov/hm/radon
- Phone
- Not stated on the page we checked
- Not stated on the page we checked
- Free or discounted test kits
Order a free radon test kit
- Licensing or certification of radon professionals
Listed contractors are certified by the National Radon Proficiency Program or the National Radon Safety Board, and must be licensed by the Colorado Department of Regulatory Agencies.
- Disclosure requirement
As of August 7, 2023, landlords in Colorado are required to disclose radon information when a tenant signs a lease agreement.
- Checked on
- September 25, 2026
Connecticut: Radon Program
Checked against the official page on September 25, 2026
Radon411 fetched this program's own page on September 25, 2026 and recorded only what its text states, in its own words. It is a record of what the page said that day, not an endorsement of the program and not a certification of anyone.
Department of Public Health
- Phone
- (860) 509-7300
- DPH.RadonReports@ct.gov
- Free or discounted test kits
A part of the partnership includes providing LHDs free short-term radon in air test kits for distribution to community residents.
- Licensing or certification of radon professionals
The State of Connecticut does not license or otherwise certify radon professionals, however, the Radon Program maintains lists of nationally certified professionals...
- Disclosure requirement
- Not stated on the page we checked
- Checked on
- September 25, 2026
Delaware: Delaware Division of Public Health Radon Office
Checked against the official page on September 25, 2026
Radon411 fetched this program's own page on September 25, 2026 and recorded only what its text states, in its own words. It is a record of what the page said that day, not an endorsement of the program and not a certification of anyone.
Delaware Division of Public Health
- Phone
- 1-800-464-HELP
- Not stated on the page we checked
- Free or discounted test kits
Delaware Residents click HERE for your free radon test kit.
- Licensing or certification of radon professionals
- Not stated on the page we checked
- Disclosure requirement
- Not stated on the page we checked
- Checked on
- September 25, 2026
District of Columbia: Radon Test Kit Program
Checked against the official page on September 25, 2026
Radon411 fetched this program's own page on September 25, 2026 and recorded only what its text states, in its own words. It is a record of what the page said that day, not an endorsement of the program and not a certification of anyone.
- Official page
- https://doee.dc.gov/radon
- Phone
- (202) 535-2302
- Not stated on the page we checked
- Free or discounted test kits
District residents can obtain a free radon test kit to reduce prolonged exposure to harmful levels of radon in the home.
- Licensing or certification of radon professionals
- Not stated on the page we checked
- Disclosure requirement
- Not stated on the page we checked
- Checked on
- September 25, 2026
Florida: Florida’s Radon Program
Checked against the official page on September 25, 2026
Radon411 fetched this program's own page on September 25, 2026 and recorded only what its text states, in its own words. It is a record of what the page said that day, not an endorsement of the program and not a certification of anyone.
Florida Department of Health
- Official page
- https://www.floridahealth.gov/community-environmental-public-health/environmental-public-health/air-quality/radon/
- Phone
- 850-245-4288
- PHtoxicology@FLhealth.gov
- Free or discounted test kits
Protect your family by requesting a FREE radon test kit.
- Licensing or certification of radon professionals
Florida Statutes require the certification of businesses and individuals providing radon services or any other radon related activity.
- Disclosure requirement
- Not stated on the page we checked
- Checked on
- September 25, 2026
Georgia radon program
Checked against the official page on September 25, 2026
Radon411 fetched this program's own page on September 25, 2026 and recorded only what its text states, in its own words. It is a record of what the page said that day, not an endorsement of the program and not a certification of anyone.
Georgia Attorney General's Consumer Protection Division
- Official page
- https://consumer.georgia.gov/consumer-topics/radon
- Phone
- Not stated on the page we checked
- Not stated on the page we checked
- Free or discounted test kits
A kit costs $15.00 if mailed or $10.00 if picked up at a participating County Extension office.
- Licensing or certification of radon professionals
There are no laws mandating a mitigator receive certification in Georgia, however, many mitigators choose to get certified by one of two national programs.
- Disclosure requirement
- Not stated on the page we checked
- Checked on
- September 25, 2026
Hawaii radon program
Not yet verified
Radon411 could not read Hawaii's program page on September 25, 2026: no page on hawaii.gov mentions radon: EPA's two links open the Department of Health home page and the Indoor and Radiological Health Branch page, and a search of health.hawaii.gov's sitemaps (150 read), its own site search and 16 of its health and environment pages found none; the site limited further requests with HTTP 429. Nothing from it is shown as fact.
- Program page EPA lists (not checked)
- https://hawaii.gov/health/environmental/noise/index.html
- Status
- Radon411 could not read Hawaii's program page on September 25, 2026: no page on hawaii.gov mentions radon: EPA's two links open the Department of Health home page and the Indoor and Radiological Health Branch page, and a search of health.hawaii.gov's sitemaps (150 read), its own site search and 16 of its health and environment pages found none; the site limited further requests with HTTP 429. Nothing from it is shown as fact.
Idaho: DHW Environmental Health Program
Checked against the official page on September 25, 2026
Radon411 fetched this program's own page on September 25, 2026 and recorded only what its text states, in its own words. It is a record of what the page said that day, not an endorsement of the program and not a certification of anyone.
Idaho Department of Health and Welfare
- Phone
- 800-445-8647
- radon@dhw.idaho.gov
- Free or discounted test kits
Order a free radon test kit.
- Licensing or certification of radon professionals
- Not stated on the page we checked
- Disclosure requirement
- Not stated on the page we checked
- Checked on
- September 25, 2026
Illinois: IEMA-OHS Radon Program
Checked against the official page on September 25, 2026
Radon411 fetched this program's own page on September 25, 2026 and recorded only what its text states, in its own words. It is a record of what the page said that day, not an endorsement of the program and not a certification of anyone.
Illinois Emergency Management Agency and Office of Homeland Security
- Official page
- https://iemaohs.illinois.gov/nrs/radon.html
- Phone
- (800) 325-1245
- Not stated on the page we checked
- Free or discounted test kits
- Not stated on the page we checked
- Licensing or certification of radon professionals
The Agency also licenses and regulates the individuals who provide radon measurement and mitigation to the public.
- Disclosure requirement
Illinois Radon Awareness Act - This is the legislation that requires the seller to provide to the buyer of any interest in residential real property the IEMA-OHS pamphlet entitled "Radon Testing Guidelines for Real Estate Transactions" and the Illinois Disclosure of Information on Radon Hazards.
- Checked on
- September 25, 2026
Indiana radon program
Checked against the official page on September 25, 2026
Radon411 fetched this program's own page on September 25, 2026 and recorded only what its text states, in its own words. It is a record of what the page said that day, not an endorsement of the program and not a certification of anyone.
Indiana Department of Health
- Phone
- 1-800-272-9723
- Not stated on the page we checked
- Free or discounted test kits
To purchase a low-cost radon short term or long term test kit, please visit the American Lung Association
- Licensing or certification of radon professionals
According to the Indiana Radon Rule, 410 IAC 5.1, everyone who is serving Indiana by doing radon testing, analysis and mitigation (radon reduction) in residential structures must be certified by the Indiana State Department of Health.
- Disclosure requirement
- Not stated on the page we checked
- Checked on
- September 25, 2026
Iowa: Iowa HHS Radon Program
Checked against the official page on September 25, 2026
Radon411 fetched this program's own page on September 25, 2026 and recorded only what its text states, in its own words. It is a record of what the page said that day, not an endorsement of the program and not a certification of anyone.
Iowa Department of Health and Human Services
- Official page
- https://hhs.iowa.gov/health-prevention/providers-professionals/radiological-health/radon
- Phone
- (515) 281-4928
- Not stated on the page we checked
- Free or discounted test kits
You can reach the Hotline by calling 1-800-383-5992 to order low-cost radon test kits and find answers to your radon questions.
- Licensing or certification of radon professionals
Iowa’s radon program approves applications for persons who wish to become certified to perform radon testing or credentialed to perform mitigation and laboratories that provide radon testing devices and analytical services.
- Disclosure requirement
However, per Iowa Code chapters 543B.9 and 543B.18 and Iowa Administrative Code 193E Chapter 14 administered by the Iowa Real Estate Commission, a seller must disclose any known tests for the presence of radon and if yes, provide the date of last report and the result(s).
- Checked on
- September 25, 2026
Kansas: Kansas Radon Program
Checked against the official page on September 25, 2026
Radon411 fetched this program's own page on September 25, 2026 and recorded only what its text states, in its own words. It is a record of what the page said that day, not an endorsement of the program and not a certification of anyone.
- Official page
- https://www.kansasradonprogram.org/
- Phone
- (800) 693-5343
- Not stated on the page we checked
- Free or discounted test kits
- Not stated on the page we checked
- Licensing or certification of radon professionals
- Not stated on the page we checked
- Disclosure requirement
- Not stated on the page we checked
- Checked on
- September 25, 2026
Kentucky radon program
Checked against the official page on September 25, 2026
Radon411 fetched this program's own page on September 25, 2026 and recorded only what its text states, in its own words. It is a record of what the page said that day, not an endorsement of the program and not a certification of anyone.
Kentucky Board of Radon Safety
- Official page
- https://radon.ky.gov/
- Phone
- 502-782-2782
- Radon@ky.gov
- Free or discounted test kits
- Not stated on the page we checked
- Licensing or certification of radon professionals
- Not stated on the page we checked
- Disclosure requirement
- Not stated on the page we checked
- Checked on
- September 25, 2026
Louisiana radon program
Checked against the official page on September 25, 2026
Radon411 fetched this program's own page on September 25, 2026 and recorded only what its text states, in its own words. It is a record of what the page said that day, not an endorsement of the program and not a certification of anyone.
Louisiana Department of Environmental Quality
- Official page
- https://www.deq.louisiana.gov/faq/category/32
- Phone
- Not stated on the page we checked
- Not stated on the page we checked
- Free or discounted test kits
- Not stated on the page we checked
- Licensing or certification of radon professionals
- Not stated on the page we checked
- Disclosure requirement
- Not stated on the page we checked
- Checked on
- September 25, 2026
Maine: Maine Radiation Control Program
Checked against the official page on September 25, 2026
Radon411 fetched this program's own page on September 25, 2026 and recorded only what its text states, in its own words. It is a record of what the page said that day, not an endorsement of the program and not a certification of anyone.
Maine Center for Disease Control & Prevention
- Phone
- 207-287-5676
- radon.dhhs@maine.gov
- Free or discounted test kits
- Not stated on the page we checked
- Licensing or certification of radon professionals
Under Maine law, only the owner or occupant of a residence or someone registered with the state to provide these services, may test for radon, install and/or advise on the installation of a radon reduction (mitigation) system.
- Disclosure requirement
- Not stated on the page we checked
- Checked on
- September 25, 2026
Maryland radon program
Checked against the official page on September 25, 2026
Radon411 fetched this program's own page on September 25, 2026 and recorded only what its text states, in its own words. It is a record of what the page said that day, not an endorsement of the program and not a certification of anyone.
Maryland Department of Health
- Phone
- 1-866-703-3266
- Not stated on the page we checked
- Free or discounted test kits
Maryland residents may be eligible for a free radon test kit.
- Licensing or certification of radon professionals
- Not stated on the page we checked
- Disclosure requirement
- Not stated on the page we checked
- Checked on
- September 25, 2026
Massachusetts: Radon Unit
Checked against the official page on September 25, 2026
Radon411 fetched this program's own page on September 25, 2026 and recorded only what its text states, in its own words. It is a record of what the page said that day, not an endorsement of the program and not a certification of anyone.
Department of Public Health
- Official page
- https://www.mass.gov/radon
- Phone
- (800) 723-6695
- DPHIAQ.radon@mass.gov
- Free or discounted test kits
- Not stated on the page we checked
- Licensing or certification of radon professionals
- Not stated on the page we checked
- Disclosure requirement
- Not stated on the page we checked
- Checked on
- September 25, 2026
Michigan: Michigan Indoor Radon Program
Checked against the official page on September 25, 2026
Radon411 fetched this program's own page on September 25, 2026 and recorded only what its text states, in its own words. It is a record of what the page said that day, not an endorsement of the program and not a certification of anyone.
Michigan Department of Environment, Great Lakes, and Energy
- Phone
- 800-723-6642
- Radon@Michigan.gov
- Free or discounted test kits
- Not stated on the page we checked
- Licensing or certification of radon professionals
Michigan does not license or regulate radon testing and mitigation contractors.
- Disclosure requirement
- Not stated on the page we checked
- Checked on
- September 25, 2026
Minnesota: MDH Indoor Air Unit
Checked against the official page on September 25, 2026
Radon411 fetched this program's own page on September 25, 2026 and recorded only what its text states, in its own words. It is a record of what the page said that day, not an endorsement of the program and not a certification of anyone.
MN Dept. of Health
- Phone
- 651-201-4601
- health.indoorair@state.mn.us
- Free or discounted test kits
- Not stated on the page we checked
- Licensing or certification of radon professionals
The Radon Licensing Act requires anyone who performs a radon test or radon mitigation, in a building they do not own or lease, must be licensed by MDH.
- Disclosure requirement
The Minnesota Radon Awareness Act requires specific disclosure and education be provided to potential home buyers during residential real estate transactions in Minnesota.
- Checked on
- September 25, 2026
Mississippi: Mississippi Radon Program
Checked against the official page on September 25, 2026
Radon411 fetched this program's own page on September 25, 2026 and recorded only what its text states, in its own words. It is a record of what the page said that day, not an endorsement of the program and not a certification of anyone.
Mississippi State Department of Health
- Official page
- https://msdh.ms.gov/page/44,0,100.html
- Phone
- 1-800-626-7739
- Not stated on the page we checked
- Free or discounted test kits
- Not stated on the page we checked
- Licensing or certification of radon professionals
- Not stated on the page we checked
- Disclosure requirement
- Not stated on the page we checked
- Checked on
- September 25, 2026
Missouri: Missouri Radon Program
Checked against the official page on September 25, 2026
Radon411 fetched this program's own page on September 25, 2026 and recorded only what its text states, in its own words. It is a record of what the page said that day, not an endorsement of the program and not a certification of anyone.
Missouri Department of Health and Senior Services
- Phone
- 573-751-6102
- radon@health.mo.gov
- Free or discounted test kits
Free radon test kits are available for Missouri residents (limit one per household).
- Licensing or certification of radon professionals
- Not stated on the page we checked
- Disclosure requirement
- Not stated on the page we checked
- Checked on
- September 25, 2026
Montana: Radon Control Program
Checked against the official page on September 25, 2026
Radon411 fetched this program's own page on September 25, 2026 and recorded only what its text states, in its own words. It is a record of what the page said that day, not an endorsement of the program and not a certification of anyone.
Montana DEQ
- Official page
- https://deq.mt.gov/air/Programs/radon
- Phone
- 1-800-546-0483
- Not stated on the page we checked
- Free or discounted test kits
Energy Bureau staff manage the radon information toll-free hotline and distribute subsidized radon test kits to Montana residents.
- Licensing or certification of radon professionals
Montana DEQ does not certify or require proof of certification for the contractors listed.
- Disclosure requirement
- Not stated on the page we checked
- Checked on
- September 25, 2026
Nebraska: Office of Environmental Health Hazards & Indoor Air
Checked against the official page on September 25, 2026
Radon411 fetched this program's own page on September 25, 2026 and recorded only what its text states, in its own words. It is a record of what the page said that day, not an endorsement of the program and not a certification of anyone.
Nebraska Department of Health and Human Services
- Official page
- https://dhhs.ne.gov/pages/radon.aspx
- Phone
- (402) 471-1005
- Not stated on the page we checked
- Free or discounted test kits
Some local programs distribute radon kits for free or a reduced cost.
- Licensing or certification of radon professionals
If radon testing is done in schools, offices, or other places of work, it must be done by a licensed radon measurement business.
- Disclosure requirement
- Not stated on the page we checked
- Checked on
- September 25, 2026
Nevada: Nevada Radon Education Program
Checked against the official page on September 25, 2026
Radon411 fetched this program's own page on September 25, 2026 and recorded only what its text states, in its own words. It is a record of what the page said that day, not an endorsement of the program and not a certification of anyone.
University Of Nevada, Reno
- Official page
- https://extension.unr.edu/radon/default.aspx
- Phone
- Not stated on the page we checked
- chrisk@unr.edu
- Free or discounted test kits
The program offers literature, maps, educational presentations and low-cost radon test kits.
- Licensing or certification of radon professionals
- Not stated on the page we checked
- Disclosure requirement
- Not stated on the page we checked
- Checked on
- September 25, 2026
New Hampshire: New Hampshire Radon Program
Checked against the official page on September 25, 2026
Radon411 fetched this program's own page on September 25, 2026 and recorded only what its text states, in its own words. It is a record of what the page said that day, not an endorsement of the program and not a certification of anyone.
New Hampshire Department of Health and Human Services
- Phone
- Not stated on the page we checked
- Not stated on the page we checked
- Free or discounted test kits
The NH Radon Program provides free radon test kits to NH residents.
- Licensing or certification of radon professionals
There is no requirement in New Hampshire for those professionals testing for radon to be certified but it is recommended to use a nationally certified radon measurement professional especially if a real estate transaction is involved.
- Disclosure requirement
- Not stated on the page we checked
- Checked on
- September 25, 2026
New Jersey: Radon Section
Checked against the official page on September 25, 2026
Radon411 fetched this program's own page on September 25, 2026 and recorded only what its text states, in its own words. It is a record of what the page said that day, not an endorsement of the program and not a certification of anyone.
New Jersey Department of Environmental Protection
- Official page
- https://dep.nj.gov/rpp/radon/
- Phone
- 800-648-0394
- Not stated on the page we checked
- Free or discounted test kits
Check with your municipal or county health department for free radon test kits or purchase a test kit from a hardware store or a NJ certified radon business.
- Licensing or certification of radon professionals
By law, all businesses and professionals conducting radon testing and mitigation in New Jersey must be certified by the DEP.
- Disclosure requirement
Under the law, the seller must provide the buyer, at the time the contract of sale is entered into, with a copy of the results of the radon test and evidence of any mitigation or treatment.
- Checked on
- September 25, 2026
New Mexico: New Mexico Indoor Radon Outreach Program
Checked against the official page on September 25, 2026
Radon411 fetched this program's own page on September 25, 2026 and recorded only what its text states, in its own words. It is a record of what the page said that day, not an endorsement of the program and not a certification of anyone.
New Mexico Environment Department
- Phone
- (505) 476-8600
- radon.questions@env.nm.gov
- Free or discounted test kits
The New Mexico Environment Department seasonally distributes free radon testing kits to the public on a first-come, first-served basis.
- Licensing or certification of radon professionals
There is not currently a certification program within the state.
- Disclosure requirement
- Not stated on the page we checked
- Checked on
- September 25, 2026
New York: Radon Program
Checked against the official page on September 25, 2026
Radon411 fetched this program's own page on September 25, 2026 and recorded only what its text states, in its own words. It is a record of what the page said that day, not an endorsement of the program and not a certification of anyone.
New York State Department of Health
- Official page
- https://www.health.ny.gov/environmental/radon/
- Phone
- 518-402-7556
- radon@health.ny.gov
- Free or discounted test kits
Providing patients with information about how low-cost test kits may be obtained from the Radon Program.
- Licensing or certification of radon professionals
NYS does not certify or license radon testers.
- Disclosure requirement
- Not stated on the page we checked
- Checked on
- September 25, 2026
North Carolina: North Carolina Radon Program
Checked against the official page on September 25, 2026
Radon411 fetched this program's own page on September 25, 2026 and recorded only what its text states, in its own words. It is a record of what the page said that day, not an endorsement of the program and not a certification of anyone.
NCDHHS
- Official page
- https://www.ncdhhs.gov/divisions/health-service-regulation/north-carolina-radon-program
- Phone
- Not stated on the page we checked
- Not stated on the page we checked
- Free or discounted test kits
- Not stated on the page we checked
- Licensing or certification of radon professionals
The North Carolina Radon Program is presently developing a Radon Proficiency Program as directed by Session Law 2023-91 House Bill 782 .
- Disclosure requirement
- Not stated on the page we checked
- Checked on
- September 25, 2026
North Dakota radon program
Checked against the official page on September 25, 2026
Radon411 fetched this program's own page on September 25, 2026 and recorded only what its text states, in its own words. It is a record of what the page said that day, not an endorsement of the program and not a certification of anyone.
North Dakota Department of Environmental Quality
- Official page
- https://deq.nd.gov/WM/Radon/
- Phone
- 701-328-5166
- jOtto@nd.gov
- Free or discounted test kits
Notice: The DEQ is out of free radon test kits.
- Licensing or certification of radon professionals
- Not stated on the page we checked
- Disclosure requirement
- Not stated on the page we checked
- Checked on
- September 25, 2026
Ohio: Radon Education and Licensing Program
Checked against the official page on September 25, 2026
Radon411 fetched this program's own page on September 25, 2026 and recorded only what its text states, in its own words. It is a record of what the page said that day, not an endorsement of the program and not a certification of anyone.
Ohio Department of Health
- Official page
- https://odh.ohio.gov/know-our-programs/radon-education-and-licensing-program/welcome-to
- Phone
- 614-728-0272
- indoor.radon@odh.ohio.gov
- Free or discounted test kits
Free radon test kits are available for Ohio homeowners.
- Licensing or certification of radon professionals
This program licenses companies and persons directly involved with the radon testing and mitigation industry.
- Disclosure requirement
- Not stated on the page we checked
- Checked on
- September 25, 2026
Oklahoma radon program
Checked against the official page on September 25, 2026
Radon411 fetched this program's own page on September 25, 2026 and recorded only what its text states, in its own words. It is a record of what the page said that day, not an endorsement of the program and not a certification of anyone.
Department of Environmental Quality
- Phone
- Not stated on the page we checked
- Not stated on the page we checked
- Free or discounted test kits
- Not stated on the page we checked
- Licensing or certification of radon professionals
- Not stated on the page we checked
- Disclosure requirement
- Not stated on the page we checked
- Checked on
- September 25, 2026
Oregon: Oregon Radon Awareness Program
Checked against the official page on September 25, 2026
Radon411 fetched this program's own page on September 25, 2026 and recorded only what its text states, in its own words. It is a record of what the page said that day, not an endorsement of the program and not a certification of anyone.
Oregon Health Authority
- Official page
- https://www.oregon.gov/oha/PH/HEALTHYENVIRONMENTS/HEALTHYNEIGHBORHOODS/RADONGAS/Pages/index.aspx
- Phone
- Not stated on the page we checked
- Radon.program@dhsoha.state.or.us
- Free or discounted test kits
Oregon Radon Awareness Program provides a FREE short-term radon test kit to those living in areas of Oregon where little radon testing has been done.
- Licensing or certification of radon professionals
- Not stated on the page we checked
- Disclosure requirement
- Not stated on the page we checked
- Checked on
- September 25, 2026
Pennsylvania: Radon Division
Checked against the official page on September 25, 2026
Radon411 fetched this program's own page on September 25, 2026 and recorded only what its text states, in its own words. It is a record of what the page said that day, not an endorsement of the program and not a certification of anyone.
Department of Environmental Protection
- Official page
- https://www.pa.gov/agencies/dep/programs-and-services/radiation-protection/radon-division/radon-in-the-home
- Phone
- 800-237-2366
- Not stated on the page we checked
- Free or discounted test kits
Through an EPA-funded program, hospitals give parents of newborn children a packet of information which includes a coupon for a free radon test kit from the DEP.
- Licensing or certification of radon professionals
The Radon Certification Act requires DEP to establish by regulation, a certification program for persons conducting radon gas and radon progeny testing, laboratory analysis and mitigation...
- Disclosure requirement
- Not stated on the page we checked
- Checked on
- September 25, 2026
Rhode Island: Radon Control Program
Checked against the official page on September 25, 2026
Radon411 fetched this program's own page on September 25, 2026 and recorded only what its text states, in its own words. It is a record of what the page said that day, not an endorsement of the program and not a certification of anyone.
Rhode Island Department of Health
- Official page
- https://health.ri.gov/radon
- Phone
- Not stated on the page we checked
- doh.radon@health.ri.gov
- Free or discounted test kits
- Not stated on the page we checked
- Licensing or certification of radon professionals
This page lists Radon Testing businesses that are licensed by the Rhode Island Department of Health.
- Disclosure requirement
- Not stated on the page we checked
- Checked on
- September 25, 2026
South Carolina: South Carolina Radon Program
Checked against the official page on September 25, 2026
Radon411 fetched this program's own page on September 25, 2026 and recorded only what its text states, in its own words. It is a record of what the page said that day, not an endorsement of the program and not a certification of anyone.
South Carolina Department of Environmental Services
- Phone
- 1-800-768-0362
- radon@des.sc.gov
- Free or discounted test kits
The South Carolina Radon Program offers free short-term radon test kits to South Carolina homeowners, subject to availability.
- Licensing or certification of radon professionals
- Not stated on the page we checked
- Disclosure requirement
- Not stated on the page we checked
- Checked on
- September 25, 2026
South Dakota radon program
Checked against the official page on September 25, 2026
Radon411 fetched this program's own page on September 25, 2026 and recorded only what its text states, in its own words. It is a record of what the page said that day, not an endorsement of the program and not a certification of anyone.
Department of Agriculture and Natural Resources
- Phone
- 1-800-438-3367
- Not stated on the page we checked
- Free or discounted test kits
The Department of Agriculture and Natural Resources (DANR) will provide 500 free Radon test kits to South Dakota Residents.
- Licensing or certification of radon professionals
- Not stated on the page we checked
- Disclosure requirement
- Not stated on the page we checked
- Checked on
- September 25, 2026
Tennessee: Tennessee Radon Program
Checked against the official page on September 25, 2026
Radon411 fetched this program's own page on September 25, 2026 and recorded only what its text states, in its own words. It is a record of what the page said that day, not an endorsement of the program and not a certification of anyone.
Department of Environment & Conservation
- Phone
- 1-800-232-1139
- TDEC.Radon@tn.gov
- Free or discounted test kits
The Tennessee Radon Program provides free radon test kits and information assistance to residents, while also providing training opportunities to radon professionals across the state.
- Licensing or certification of radon professionals
- Not stated on the page we checked
- Disclosure requirement
- Not stated on the page we checked
- Checked on
- September 25, 2026
Texas: Texas Radon Group
Checked against the official page on September 25, 2026
Radon411 fetched this program's own page on September 25, 2026 and recorded only what its text states, in its own words. It is a record of what the page said that day, not an endorsement of the program and not a certification of anyone.
Texas Tech University
- Official page
- https://www.depts.ttu.edu/ceweb/radon/
- Phone
- Not stated on the page we checked
- Not stated on the page we checked
- Free or discounted test kits
The Texas Radon Group offers free radon test kits for Texas individuals who qualify.
- Licensing or certification of radon professionals
There are no radon certification requirements for the State of Texas at this time, but the National Radon Proficiency Program lists radon testers and mitigators within Texas that have passed a rigorous national certification program.
- Disclosure requirement
- Not stated on the page we checked
- Checked on
- September 25, 2026
Utah: Indoor Radon Program
Checked against the official page on September 25, 2026
Radon411 fetched this program's own page on September 25, 2026 and recorded only what its text states, in its own words. It is a record of what the page said that day, not an endorsement of the program and not a certification of anyone.
Utah Department of Environmental Quality
- Official page
- https://deq.utah.gov/dwmrc/radon
- Phone
- (801) 536-0091
- Not stated on the page we checked
- Free or discounted test kits
- Not stated on the page we checked
- Licensing or certification of radon professionals
- Not stated on the page we checked
- Disclosure requirement
Utah requires that sellers disclose "Hazardous Conditions: Are there any hazardous conditions on the Property such as Radon gas in house or well?"
- Checked on
- September 25, 2026
Vermont: Radon Program
Checked against the official page on September 25, 2026
Radon411 fetched this program's own page on September 25, 2026 and recorded only what its text states, in its own words. It is a record of what the page said that day, not an endorsement of the program and not a certification of anyone.
Vermont Department of Health
- Phone
- 802-863-7220
- Not stated on the page we checked
- Free or discounted test kits
Join the Department of Health Lab's study on radon in water to receive free test kits for your well or spring.
- Licensing or certification of radon professionals
- Not stated on the page we checked
- Disclosure requirement
- Not stated on the page we checked
- Checked on
- September 25, 2026
Virginia: VDH Radon Program
Checked against the official page on September 25, 2026
Radon411 fetched this program's own page on September 25, 2026 and recorded only what its text states, in its own words. It is a record of what the page said that day, not an endorsement of the program and not a certification of anyone.
Virginia Department of Health
- Phone
- (804) 864-8161
- Radon@vdh.virginia.gov
- Free or discounted test kits
Virginia Department of Health is offering a limited supply of short-term, do-it-yourself radon test kits available for only a $4 shipping fee.
- Licensing or certification of radon professionals
The Code of Virginia requires that Radon testers and mitigators be currently certified by either the National Radon Proficiency Program (NRPP) or the National Radon Safety Board (NRSB).
- Disclosure requirement
- Not stated on the page we checked
- Checked on
- September 25, 2026
Washington: Radon Program
Checked against the official page on September 25, 2026
Radon411 fetched this program's own page on September 25, 2026 and recorded only what its text states, in its own words. It is a record of what the page said that day, not an endorsement of the program and not a certification of anyone.
Washington State Department of Health
- Phone
- 360-236-3200
- doh.radon@doh.wa.gov
- Free or discounted test kits
We have a limited supply of free radon test kits.
- Licensing or certification of radon professionals
- Not stated on the page we checked
- Disclosure requirement
- Not stated on the page we checked
- Checked on
- September 25, 2026
West Virginia: OEHS Radon Program
Checked against the official page on September 25, 2026
Radon411 fetched this program's own page on September 25, 2026 and recorded only what its text states, in its own words. It is a record of what the page said that day, not an endorsement of the program and not a certification of anyone.
WV DHHR OEHS Radiation, Toxics & Indoor Air Division
- Official page
- https://oehs.wvdhhr.org/rtia/radon/
- Phone
- 304-352-5039
- Radon@wv.gov
- Free or discounted test kits
West Virginia residents can request a free Radon Test Kit by emailing Radon@wv.gov or calling 304-352-5039
- Licensing or certification of radon professionals
Complete listings of professionals licensed to perform Asbestos, Lead, Radon and Clandestine Drug Laboratory Remediation activities in West Virginia.
- Disclosure requirement
- Not stated on the page we checked
- Checked on
- September 25, 2026
Wisconsin radon program
Checked against the official page on September 25, 2026
Radon411 fetched this program's own page on September 25, 2026 and recorded only what its text states, in its own words. It is a record of what the page said that day, not an endorsement of the program and not a certification of anyone.
Wisconsin Department of Health Services
- Official page
- https://www.dhs.wisconsin.gov/radon/infocenters.htm
- Phone
- 1-888-569-7236
- DHSRadon@dhs.wisconsin.gov
- Free or discounted test kits
We recommend starting with your regional Radon Information Center since many centers provide test kits for free or reduced cost, and often with laboratory fees covered.
- Licensing or certification of radon professionals
The State of Wisconsin does not require contractors performing radon measurement or mitigation work to be state licensed or nationally certified.
- Disclosure requirement
- Not stated on the page we checked
- Checked on
- September 25, 2026
Wyoming: Wyoming Radon Program
Checked against the official page on September 25, 2026
Radon411 fetched this program's own page on September 25, 2026 and recorded only what its text states, in its own words. It is a record of what the page said that day, not an endorsement of the program and not a certification of anyone.
Wyoming Department of Health
- Official page
- https://health.wyo.gov/publichealth/cancer-and-chronic-disease-prevention-unit/cancer/radon/
- Phone
- Not stated on the page we checked
- Not stated on the page we checked
- Free or discounted test kits
- Not stated on the page we checked
- Licensing or certification of radon professionals
- Not stated on the page we checked
- Disclosure requirement
- Not stated on the page we checked
- Checked on
- September 25, 2026
Questions people ask
Is radon testing required in my state?
Testing is recommended for every home below the third floor, but whether it is legally required depends on your state and local rules and on the terms of a home sale. Some states require disclosure of radon information to buyers, specific testing protocols, or licensed radon professionals.
Do sellers have to disclose radon?
EPA's guide ties radon disclosure to state or local government requirements, and rules vary by state, so start with your state radon program. Whatever the rule, EPA's advice is to share: give buyers your test results and the records of any radon fix.