Skip to content
RADON411

Radon testing in Smithville, Missouri

Radon testers with an address in Smithville, with the licenses on file for each.

Smithville, MO at a glance

  • Businesses listed

    1

    Smithville
    1
    Gladstone
    1

    By each business's listed address

  • Listed for testing

    1

    100% of listings

    Testing
    1
    Mitigation
    0

    A business can be listed for both

  • State license on file

    1

    100% of listings

    State license
    1
    NRPP
    0

    As each issuer's own record shows it

  • Share at 4+ pCi/L

    44.6%

    8.9 pts above MO

    Clay
    44.6%
    Missouri
    35.7%

    Clay, 1st of 7 in MO, 2023

  • EPA radon zone

    Zone 1

    Highest potential

    1. Zone 1
    2. 2
    3. 3

    1 highest, 3 lowest

    Clay County, where Smithville is

Professionals in Smithville

Missouri licensing and every city

No business licensed by Missouri is listed here yet.

Located in Missouri, licensed by another state

These businesses have an address in Missouri, and another state's registry lists them. That does not mean Missouri licenses them: check with Missouri's radon program before hiring one for work here.

1 professional located in Smithville, Missouri and listed by another state.

Radon levels in Smithville

Read a result for Smithville

Starts at Clay County's median, 3.6 pCi/L

3.6pCi/L

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

EPA’s reading of 3.6 pCi/L

Between 2 and 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 between 2 and 4 pCi/L. EPA recommends considering a fix when the level is between 2 and 4 pCi/L. Clay County's median reported result, 2023.

Interpret this readingWhat a fix costs

Smithville lies partly in Clay County, where 44.6% of 83 radon tests reported to CDC (2023) were at or above 4 pCi/L, 8.9 points above Missouri pooled (35.7%), 1st of 7 Missouri counties with 30 or more tests.

Radon test figures for the counties Smithville lies in
CountyTestsAt or above 4 pCi/LMedianMissouri, pooledRank in the stateEPA zone
Clay County8344.6%3.6 pCi/L35.7%1 of 7Zone 1
Platte County1,78937.8%3.0 pCi/L30.6%23 of 72Zone 1

Shares of tests people chose to run and report, by county (2023); the state's is its counties' counts added up, calculated by Radon411. Only a test measures a home.

Around Clay County, one of the counties Smithville lies in, the nearest Missouri counties with a CDC figure for 2023 run from 22.6% to 44.1% of tests at or above 4 pCi/L; the closest, Jackson County, is 21 miles away at 44.1%.

The nearest Missouri counties to Clay County with 30 or more tests, 2023
CountyDistanceTestsAt or above 4 pCi/LMedian
Jackson County21 mi20444.1%3.4 pCi/L
Boone County116 mi6342.9%3.6 pCi/L
Greene County153 mi4827.1%2.9 pCi/L
St. Charles County205 mi10340.8%3.4 pCi/L
St. Louis County219 mi44322.6%2.0 pCi/L
Jefferson County222 mi3638.9%3.4 pCi/L

Cities near Smithville

Every city in Missouri with listed radon professionals

Listings come from state licensing registries.

Run a radon business?Get Featured