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Radon Levels in Macomb County, Michigan

EPA puts Macomb County in Zone 3, its lowest radon zone. Homes with elevated levels occur in all three zones, so only a test measures yours.

Data checked By Radon411Methodology

Predicted
Zone 3Lower predicted potential
Measured
13.4%of 5,629 tests reported to CDC (2008 to 2017) were at or above 4 pCi/L
Your home
Test to knowNo area figure here is a reading of your home.
How to test this homeFind a certified tester

The data

Macomb County, At a glance

Macomb County at a glance

Predicted: EPA radon zone

EPA Zone 3: lower predicted potential

This is a county-level geologic prediction. It is not a measurement of any address, and houses with elevated radon are found in all three zones.

What EPA predicts hereScreening level, geology

EPA predicts an average indoor of less than 2 pCi/L (less than 75 Bq/m³) across the county as a whole.

USGS geologic potential: Moderate across 100% of the county's area

Predicted: EPA Map of Radon Zones

Measured: tests reported to CDC

Radon tests reported for Macomb County, 2008 to 2017, laboratory

Tests reported
5,629
At or above 4 pCi/L
13.4%
Median result
1.6 pCi/L
Reported results by concentration band, Macomb County, 2008 to 2017, laboratory
Under 2 pCi/L: 61%2 to 4 pCi/L: 26%4 pCi/L and above: 13%

Of 5,629 pre-mitigation tests reported to CDC, not homes in this area.

Reported results by concentration band, Macomb County, 2008 to 2017, laboratory: data table
Result bandTests MeasuredShare Measured
Under 2 pCi/L3,40960.6%
2 to 4 pCi/L1,46626.0%
4 pCi/L and above75413.4%

CDC publishes this figure only for counties here, so there is no state or national number to compare Macomb County, Michigan with.

What these figures count

Distribution of radon tests reported to CDC, not this house. People testing before a sale, or because they suspect a problem, are over-represented in any reported testing data.

The figures at the top are for 2008 to 2017 (laboratory totals): a percentage there is a share of radon tests reported to CDC for Macomb County over 2008 to 2017, laboratory, and a percentage in a view below is a share of the tests reported for the year or period it names. It is not a share of homes in Macomb County, and it is not a random sample: it counts only the tests people chose to run and that were reported.

CDC works out the shares and the median over pre-mitigation tests, counting a test not marked as before or after mitigation as one of them (5,629 for 2008 to 2017, laboratory). The median is the middle result of those tests, not of buildings. CDC also reports the number of buildings tested (4,659), a different count, so the two totals are not interchangeable.

Macomb County's own published CDC figures beside those of the counties that border it, for the same period.

Each figure is that county’s own published CDC figure for 2008 to 2017, laboratory, counting radon tests reported to CDC, not homes. Macomb County is this page. Nothing is averaged or combined across counties. The test count beside each county is CDC’s published number of pre-mitigation tests behind its figures. Figures from few tests can swing widely from year to year. Every Michigan county’s own figure is in the Michigan county table.

Measured: CDC tracking data. Figure above: 2008 to 2017, laboratory. Measured data period: 2005 to 2017 (every CDC figure on file).

Macomb County, State data

Michigan's own radon test data

Measured

What Michigan's own agencies publish about radon tests in Macomb County, with their period. These are not CDC's figures and are never added to them.

MeasuredState figures, not CDC's

What Michigan EGLE reports for the ZIP codes in Macomb County

Michigan EGLE publishes its figures by ZIP code, not by county. These are the 39 ZIP codes that lie wholly or partly in Macomb County, each with the state's own figures for it. Period: About 10 years to 2026-05-15.

ZIP codes in Macomb County
ZIP codeWhat the state reports
4800543% greater than 4 pCi/L, median 2.7 pCi/L, 35 tests
480150% greater than 4 pCi/L, median 0.8 pCi/L, 22 tests
480216% greater than 4 pCi/L, median 1.1 pCi/L, 52 tests
480266% greater than 4 pCi/L, median 1.1 pCi/L, 50 tests
480356% greater than 4 pCi/L, median 1.4 pCi/L, 116 tests
4803612% greater than 4 pCi/L, median 1.4 pCi/L, 100 tests
4803821% greater than 4 pCi/L, median 2.2 pCi/L, 253 tests
4804131% greater than 4 pCi/L, median 2.8 pCi/L, 13 tests
480426% greater than 4 pCi/L, median 1.4 pCi/L, 299 tests
4804310% greater than 4 pCi/L, median 1.2 pCi/L, 71 tests
480447% greater than 4 pCi/L, median 1.5 pCi/L, 354 tests
480455% greater than 4 pCi/L, median 1.1 pCi/L, 134 tests
480478% greater than 4 pCi/L, median 1.4 pCi/L, 190 tests
4804817% greater than 4 pCi/L, median 1.3 pCi/L, 23 tests
480500% greater than 4 pCi/L, median 1.4 pCi/L, 10 tests
480516% greater than 4 pCi/L, median 1.4 pCi/L, 69 tests
4806210% greater than 4 pCi/L, median 1.6 pCi/L, 31 tests
4806550% greater than 4 pCi/L, median 4.0 pCi/L, 103 tests
480660% greater than 4 pCi/L, median 1.2 pCi/L, 55 tests
480806% greater than 4 pCi/L, median 1.2 pCi/L, 70 tests
480812% greater than 4 pCi/L, median 1.3 pCi/L, 93 tests
480823% greater than 4 pCi/L, median 1.1 pCi/L, 64 tests
480882% greater than 4 pCi/L, median 1.6 pCi/L, 89 tests
480892% greater than 4 pCi/L, median 0.9 pCi/L, 55 tests
480910% greater than 4 pCi/L, median 0.8 pCi/L, 50 tests
480920% greater than 4 pCi/L, median 1.1 pCi/L, 95 tests
480933% greater than 4 pCi/L, median 1.3 pCi/L, 111 tests
4809424% greater than 4 pCi/L, median 2.2 pCi/L, 143 tests
4809562% greater than 4 pCi/L, median 4.8 pCi/L, 66 tests
4809614% greater than 4 pCi/L, median 2.3 pCi/L, 29 tests
4823614% greater than 4 pCi/L, median 1.8 pCi/L, 57 tests
4830622% greater than 4 pCi/L, median 2.1 pCi/L, 331 tests
483107% greater than 4 pCi/L, median 1.4 pCi/L, 129 tests
483128% greater than 4 pCi/L, median 1.5 pCi/L, 141 tests
483134% greater than 4 pCi/L, median 1.4 pCi/L, 142 tests
483149% greater than 4 pCi/L, median 1.5 pCi/L, 55 tests
4831510% greater than 4 pCi/L, median 1.6 pCi/L, 169 tests
4831615% greater than 4 pCi/L, median 2.1 pCi/L, 158 tests
4831723% greater than 4 pCi/L, median 2.1 pCi/L, 105 tests
  • EGLE's figures cover first-time tests only, from organizations willing to provide data.
  • EGLE does not publish figures for a ZIP code with fewer than 5 test results.
  • EGLE says the map is not intended to decide whether a home should be tested: all homes should be tested.
  • ZIP code boundaries are postal delivery areas, not legal or administrative boundaries.
  • A ZIP code that crosses the county line is listed whole; its figures cover all of it.

Measured: Michigan EGLE data, About 10 years to 2026-05-15.

Radon Action Brief

National Radon Action MonthPre-sale

Macomb County's radon brief, in one dated file.

  • Your area's radon record, explained.
  • Your plan to test this week.
  • Fix costs and pros near you.

Save 64%Sale price: $8.99Price after the sale: $25Ends Jan 31Then $25

Get the Macomb County BriefSee a free sample

Area data, not a test of the building.

Local help

Macomb County, Local resources

Radon testing and mitigation in Macomb County

Who tests and fixes radon in Macomb County: listed businesses, Michigan's radon program and test kits.

Listed radon businesses with an address in Macomb County:

Listed radon professionals by town: Fraser

What Michigan's program says
Phone
800-723-6642
Email
Radon@Michigan.gov
Licensing of radon professionals
Michigan does not license or regulate radon testing and mitigation contractors.

What it means

Macomb County, Questions

Questions about radon in Macomb County

Common questions

8 questions, answered from the figures above

How do I get a radon test in Macomb County?

EPA says you can test your home yourself or hire a qualified radon test company, and that either approach takes only a small amount of time and effort. No radon testing business listed on Radon411 has an address in Macomb County or names it as a service area yet. The Michigan radon program is the place to ask about certified testers and any test kit offer it runs.

Radon testing: how to test a homeRadon test kits comparedFree and low-cost kits by stateRadon Action Month checklistMichigan radon program

Are radon levels high in Macomb County?

Over the 2008 to 2017 laboratory totals, 13.4% of the radon tests reported to CDC for Macomb County, Michigan were at or above 4 pCi/L, and the median reported pre-mitigation result was 1.6 pCi/L. That is a share of reported tests, not of homes. EPA places Macomb County in Zone 3, lower predicted potential, a predicted average indoor screening level less than 2 pCi/L. Homes with elevated levels occur in all three zones, so the figures describe the area, not your house. Testing is the only way to know the radon level in a specific building.

Radon levels: what a result meansWhat is radon?Radon levels in Michigan

Who does radon mitigation in Macomb County?

No listed mitigator names Macomb County as a service area yet; the Michigan directory lists 69 companies. EPA recommends having a qualified contractor fix a home with a radon problem, because lowering high radon levels takes technical knowledge and special skills, and some states require the work to be done by a licensed or certified professional. Your state radon program is the place to check whether Michigan requires one.

Radon mitigation: how it worksRadon mitigation costRadon mitigation systemsMitigators in Michigan

What EPA radon zone is Macomb County in?

EPA places Macomb County, Michigan in Zone 3, which EPA describes as lower predicted potential for the area. A zone is a prediction for the whole county and never determines whether a particular home should be tested. EPA recommends testing every home regardless of zone.

Should I test my home in Macomb County?

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.

When is the best time of year to test?

EPA says short-term tests stay in the home from 2 to 90 days and that all radon tests should run a minimum of 48 hours; long-term tests stay more than 90 days. EPA's guides do not name a best season: they say radon levels tend to vary from day to day and season to season, so a long-term test is more likely than a short-term test to tell you the year-round average.

What does it cost to test?

EPA's Citizen's Guide calls testing easy and inexpensive, and EPA's Home Buyer's and Seller's Guide says passive short-term and long-term devices are generally inexpensive, while active devices may cost more. No national average price is published for this, so Radon411 does not give one. What testing costs.

Which counties border Macomb County?

Macomb County borders 4 counties, derived from Census county geometry. Radon potential follows geology rather than county lines, so a bordering county's report can be relevant.

If you own, buy, sell or rent

What these figures mean for each reader, with the guide that covers it

The reported-test figures on this page describe Macomb County, Michigan over the 2008 to 2017 laboratory totals. They describe tests other people carried out in other buildings, and none of them measures yours.

Macomb County in figures

The figures above, said in words

What the published data says about Macomb County, in words. A zone and a share of tests describe an area, never the level in any one home.

    • Predicted

      Predicted

      EPA places Macomb County in Zone 3, lower predicted potential, as it does 41 other counties of Michigan's 83.

      Of the 4 bordering counties, EPA places Lapeer County and Oakland County in Zone 2 and St. Clair County and Wayne County in Zone 3.

  • Reported tests

    Measured

    CDC publishes no annual figure for Macomb County; its figure is a laboratory total for 2008 to 2017: 13.4% of 5,629 reported tests were at or above 4 pCi/L.

  • Local record

    Michigan's radon program is the Michigan Indoor Radon Program, run by Michigan Department of Environment, Great Lakes, and Energy; its contacts are under Local resources.

    The county's largest incorporated places are Warren, Sterling Heights and St. Clair Shores; the figures here cover them as part of the county.

Products

Macomb County, Products

Testing and mitigation products

Whatever the figures for Macomb County show, only a test tells you about one home.

Test kits and monitors42

See all products

As an Amazon Associate, Radon411 earns from qualifying purchases.

Best radon monitors for Macomb County homes, compared

Testing

5

Mitigation

3

Explore

Macomb County, Bordering counties

Counties bordering Macomb County

Calculated by Radon411
Why bordering counties matter

4 counties share a boundary with Macomb County, computed from Census county geometry. Radon potential follows geology rather than county lines, so a bordering county’s report can be worth reading alongside this one.

Macomb County, Cities and towns

Cities and towns in Macomb County

The radon figures on this page are for Macomb County as a whole. They do not differ by city or town.

  • Warren
  • Sterling Heights
  • St. Clair Shores
  • Roseville
  • Eastpointe
  • Mount Clemens
  • Fraser
  • New Baltimore
  • Center Line
  • New Haven
  • Richmond (part)
  • Utica
  • Romeo
  • Village of Grosse Pointe Shores (part)
  • Armada
  • Memphis (part)

16 incorporated places, as listed in the U.S. Census Bureau’s 2020 place reference files. “(part)” marks a place that extends into another county.

Macomb County, Next steps

What to do next

  1. LearnKnow what radon isWhat radon is, how it gets indoors, and why a county zone is not a reading for your home.Learn about radon
  2. TestTest the building you live inShort-term or long-term, where the device goes, and closed-house conditions.How to test
  3. FixBring a high level downHow a mitigation system works, and the retest that confirms it.How mitigation works
  4. Find a proHire a certified professionalMeasurement and mitigation professionals by state, with their certifications.Find a professional

Informational. Follow EPA guidance. EPA says all radon tests should be taken for a minimum of 48 hours, with windows and doors closed from 12 hours before a short-term test.