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Radon professionals in Idaho

Who tests and fixes radon in Idaho, what Idaho's own program says about licensing, and how to check a credential before you hire.

Updated October 2, 2026

Idaho at a glance

  • Share at 4+ pCi/L

    41.5%

    5.8 pts above U.S.

    Idaho
    41.5%
    U.S.
    35.7%

    12,961 tests across 44 counties, 2008 to 2017

  • Counties in EPA Zone 1

    19 of 44

    Some at highest potential

    Zone 1
    19
    Zone 2
    20

    EPA's predicted potential; Zone 1 is the highest

  • Counties with figures

    44

    Of 44 counties

    With figures
    44
    All
    44

    Reported tests on file, 2008 to 2017

Radon professionals listed for Idaho

No radon business is listed for Idaho yet. Search nearby states

Short answer

Radon professionals in Idaho, in brief

No business that Idaho itself licenses or certifies is listed on Radon411 yet. Ask DHW Environmental Health Program what it requires before you hire.

Radon levels

Read a radon result for Idaho

Before you call a professional: what EPA says about a test result, beside Idaho's own share of high tests.

Read a result for Idaho

Starts at EPA's action level

4.0pCi/L

EPA’s own thresholds; the figures are the area’s, never this home’s.

EPA’s reading of 4.0 pCi/L

At or above 4 pCi/L

  1. Under 20 to 1.9 pCi/L
  2. 2 to 4consider a fix
  3. 4 and aboveEPA says fix it

This result is at or above 4 pCi/L. EPA recommends fixing a home when the radon level is 4 pCi/L or higher. 41.5% of Idaho's reported tests reached 4 pCi/L, 2008 to 2017.

Interpret this readingWhat a fix costs

Radon levels in Idaho, county by county

The rule

Does Idaho license radon professionals?

Idaho's radon program page, checked on November 3, 2026, does not say whether the state licenses or certifies radon professionals. Ask the program before you hire.

Idaho is not on the list of states with radon credentialing programs that EPA's state contacts page publishes. Licensing is done by the state, not by the national programs, and EPA requires states that receive radon grants to give the public a list of only those providers credentialed by the state or by NRPP or NRSB.

State program

Idaho's radon program

The state's own radon program: the place to ask who may work in the state.

DHW Environmental Health Program

Idaho Department of Health and Welfare

Its page covers free or discounted test kits.

Phone 800-445-8647 · Email radon@dhw.idaho.gov

Visit the program's page (opens in a new tab)Read November 3, 2026

Nearby

Listed professionals in states next to Idaho

A business licensed in a neighboring state is licensed there, not necessarily in Idaho. Check Idaho's rule above before you hire one.

Before you hire

How to check a credential in Idaho

  1. Idaho's own list

    Start with Idaho's radon program. Licensing is done by the state, and most states can give you a list of radon service providers working there.

  2. NRPP's search

    The National Radon Proficiency Program's search finds its Certified Mitigation Specialists and Certified Measurement Professionals by area, by name, or by the 6-digit NRPP ID number a professional can give you.

  3. NRSB's search

    The National Radon Safety Board's search finds a professional in your area, or confirms that a named professional is NRSB certified.

  4. The ID card

    The programs usually issue a photo ID card showing the holder's qualifications and its expiry date. Ask to see it, and if in doubt, check with the body that issued it.

Hiring

Hiring in Idaho

A tester

Ask for the credential and ID card, how the test will be guarded against interference, and when the report will come. EPA recommends an independent, qualified tester for the test after a system is installed.

What a professional test involves

A mitigation contractor

Get more than one estimate, contact references, and ask for a written proposal and a contract before any work starts.

How to choose a contractor

Questions

Common questions about Idaho

Does Idaho require radon professionals to be licensed?

Idaho's radon program page, checked on November 3, 2026, does not say whether the state licenses or certifies radon professionals. Ask the program before you hire.

Idaho is not on the list of states with radon credentialing programs that EPA's state contacts page publishes.

How do I find a certified radon mitigator in Idaho?

No business is listed for mitigation in Idaho on Radon411 yet.

Your state radon program can help you find qualified professionals in the state, and NRPP and NRSB, the two national proficiency programs EPA names, each publish a search of the professionals they certify.

How to choose a mitigation contractor

Who tests for radon in Idaho?

No business is listed for radon measurement in Idaho on Radon411 yet.

A qualified radon tester is very often a home inspector, and your state radon office can give you its approved list of radon testing companies.

What a professional radon test involves

Does Idaho offer free or discounted radon test kits?

DHW Environmental Health Program's page, checked on November 3, 2026, says:

Order a free radon test kit.

Free and discounted test kits by state

Is every business on this page licensed in Idaho?

No listing here is a license. The first list holds businesses Idaho's own registry lists, or that confirmed their own listing; each card names its source.

Before you hire, check the business against Idaho's own list or the issuing body's search, because a listing on Radon411 is not a credential.

How listings are verified. Run a radon business in Idaho? Get Featured.

Next steps

Where to go next