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Radon in Lakewood, Colorado

Lakewood, Colorado lies in Jefferson County, which EPA places in Zone 1, highest predicted potential. Radon data is published by county, so this page reads Jefferson County's figures.

ColoradoAbout 156,927 people

What this means for you

  • Your area: EPA rates Jefferson County, where Lakewood is, Zone 1, the highest of its three radon zones. That is a prediction for the whole county, and homes with elevated levels occur in all three zones.
  • Local tests: Of 3,068 radon tests reported to CDC for Jefferson County (2023), 41.8% were at or above 4 pCi/L, EPA's action level.
  • Your home: The only way to know your home’s level is to test it.
How to testFind a certified tester

pCi/L (picocuries per liter) is the unit radon is measured in. EPA recommends fixing a home at 4 pCi/L or above, its action level.

Lakewood, What is published

What is published for Lakewood

Information:

Radon data is published by county, not by city

Radon data is published by county, not by city. EPA assigns radon zones to counties, and CDC publishes radon test figures by county. Neither publishes a figure for Lakewood, so every radon figure on this page belongs to a county and is labelled with it. Only a test tells you about one home.

Jefferson County has an EPA zone and its own CDC test figures, shown below. About 156,927 people live in Lakewood.

Lakewood, Counties

The county Lakewood lies in

Measured

Each county's own EPA zone and its own published CDC figures for 2023, the newest period any of them has. A county without a figure for that period is shown without one, never with a figure from another year.

Jefferson CountyZone 1Highest predicted potential

41.8%
Reported tests at or above 4 pCi/L, 2023
3.2 pCi/L
Median reported result
3,068 tests
Tests reported to CDC
10
Annual years on file

The median reported pre-mitigation result for 2023 was 3.2 pCi/L in Jefferson County.

CDC counts radon tests that were reported to it, not homes, and figures from few tests can swing widely from year to year. Each county’s report has its full history.

Predicted: EPA Map of Radon Zones, by county. Measured: CDC tracking data, by county, 2023.

Lakewood, Local resources

Local resources for Lakewood

Who to ask in Colorado: the state's radon program, test kits and professionals.

Colorado's radon program

Colorado Department of Public Health and Environment

Colorado’s radon program answers questions about testing, mitigation and the rules where you live.

Licensing 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 when a home is sold or rented
As of August 7, 2023, landlords in Colorado are required to disclose radon information when a tenant signs a lease agreement.
Visit the program's page(opens in a new tab)

Test kits

The program says: Order a free radon test kit

Free and low-cost kitsCompare kits

Radon professionals

Radon testers and mitigators in Colorado, each with how its listing was checked.

Professionals in Colorado

Lakewood, Questions

Questions about radon in Lakewood

What radon zone is Lakewood in?

EPA's Map of Radon Zones classifies counties, not cities. Jefferson County is in Zone 1 (highest predicted potential). A zone is a prediction for a whole county and never tells you the level in one home.

How many radon tests come back high in Lakewood's counties?

For 2023, the share of radon tests reported to CDC that were at or above 4 pCi/L was 41.8% in Jefferson County (3,068 tests). Each is that county's own figure, counting tests reported to CDC, not homes. Radon411 does not average or combine them into a figure for the city.

Should I test my home in Lakewood?

Yes. Testing is the only way to know the radon level in a specific building. EPA recommends fixing a home when the radon level is 4 pCi/L or higher. EPA recommends considering a fix when the level is between 2 and 4 pCi/L. How to test a home.

The answers use the published figures of Jefferson County, the county Lakewood lies in.

Lakewood, Keep reading

Keep reading

Lakewood / Next steps

What to do next