Short-term kitFirst Alert
RD1 short-term charcoal radon test kit
- Lab fee included
Method: Charcoal
In home: 2 to 4 days
Locations and reports
Radon Levels in Arenac County, Michigan
EPA puts Arenac County in Zone 3, its lowest radon zone, and most reported tests there come back low, though 8.9% of 79 (2008 to 2017, laboratory totals) reached 4 pCi/L. Homes with elevated levels occur in all three zones, so only a test measures yours.
Data checked By Radon411Methodology
Share at 4+ pCi/L
8.9%
18.0 pts below MI
- Arenac
- 8.9%
- Michigan
- 26.9%
79 tests, 2008 to 2017
Median result
0.7pCi/L
Below action level
- Arenac
- 0.7 pCi/L
- EPA
- 4.0 pCi/L
Midpoint of the tests, 2008 to 2017
Tests reported
79
79th of 82 by tests
- Arenac
- 79
- Oakland
- 16,224
Reported to CDC before any fix, 2008 to 2017
EPA radon zone
Zone 3
Lower potential
- 1
- 2
- Zone 3
1 highest, 3 lowest
EPA predicts under 2 pCi/L indoors
Rank in Michigan
71 of 82
Lowest quarter
- Arenac
- 8.9%
- Lenawee
- 56.7%
By share, of 82 with 30+ tests
Read a result for Arenac County
Starts at Arenac County's median, 0.7 pCi/L
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 0.7 pCi/L
Below 2 pCi/L
- Under 20 to 1.9 pCi/L
- 2 to 4consider a fix
- 4 and aboveEPA says fix it
This result is below 2 pCi/L, the level at which EPA says a fix should be considered. Arenac County's median reported result, 2008 to 2017.
The data
Arenac County, At a glance
Arenac County at a glance
Predicted: EPA radon zone
EPA Zone 3: lower predicted potential
USGS geologic potential: Low across 98% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Radon tests reported for Arenac County, 2008 to 2017, laboratory
Under 2 pCi/L: 75%2 to 4 pCi/L: 16%4 pCi/L and above: 9%
Of 79 pre-mitigation tests reported to CDC, not homes in this area.
| Result band | Tests Measured | Share Measured |
|---|---|---|
| Under 2 pCi/L | 59 | 74.7% |
| 2 to 4 pCi/L | 13 | 16.5% |
| 4 pCi/L and above | 7 | 8.9% |
What these figures count
These are the 79 tests reported to CDC for Arenac County over 2008 to 2017 (laboratory totals), many from homes being sold or already suspected of a problem: they describe the county's reported tests, not this house.
Measured: CDC tracking data. Figure above: 2008 to 2017, laboratory. Measured data period: 2005 to 2017 (every CDC figure on file).
Arenac County, Compared
Arenac County radon figures, compared
Calculated by Radon411Arenac County reports fewer high tests than Michigan overall. 8.9% of its 79 tests over the 2008 to 2017 laboratory totals were at or above 4 pCi/L. That is 18.0 points below the 26.9% pooled from 83 Michigan counties.
Ordered from highest share down, it comes 71st of 82 Michigan counties with 30 or more tests for the same period. Nationally, every county with a figure for the same period pools to 35.7%; Arenac County sits 26.8 points below it.
Next door, the shares run from 7.7% in Iosco County to 15.4% in Gladwin County, with Bay County and Iosco County below Arenac County. Zone 3 on EPA's map (predicted average under 2 pCi/L) and a 8.9% share point the same way here.
Half the tests came in under 0.7 pCi/L and half over it; the single highest reached 18.1 pCi/L. The rest split 74.7% under 2 pCi/L and 16.5% from 2 to 4 (Michigan: 46.4% and 26.7%).
CDC's ten-year totals for Arenac County went from 116 tests (2005 to 2014) to 79 (2008 to 2017), the share going from 5.2% to 8.9%.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Arenac County, State data
Michigan's own radon test data
MeasuredWhat Michigan's own agencies publish about radon tests in Arenac 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 Arenac County
Michigan EGLE publishes its figures by ZIP code, not by county. These are the 7 ZIP codes that lie wholly or partly in Arenac County, each with the state's own figures for it. Period: About 10 years to 2026-05-15.
| ZIP code | What the state reports |
|---|---|
| 48650 | 20% greater than 4 pCi/L, median 0.8 pCi/L, 10 tests |
| 48658 | 0% greater than 4 pCi/L, median 0.6 pCi/L, 15 tests |
| 48659 | 25% greater than 4 pCi/L, median 2.8 pCi/L, 8 tests |
| 48703 | 0% greater than 4 pCi/L, median 0.3 pCi/L, 9 tests |
| 48756 | 14% greater than 4 pCi/L, median 0.7 pCi/L, 7 tests |
| 48763 | 6% greater than 4 pCi/L, median 0.3 pCi/L, 16 tests |
| 48766 | 2 tests, figures not shown |
- 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.
Arenac County, Geology
The ground under Arenac County
PredictedUSGS's geologic map puts all of Arenac County's mapped land in one class: low radon potential. 98.2% of it lies in the area the map calls Glacial Lakes, to which USGS gives a radon index of 7, in the low band (5 to 8).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Glacial Lakes | Silt and clay glacial lake deposits. | Low | 7 | 98.2% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Arenac County beside the ground around it
Across Michigan 9.6% of the land is rated high; none of Arenac County's is. None of the 4 counties that border it has any moderate-potential ground either.
The map rates the ground, not the air in any home.
Local help
Arenac County, Local resources
Radon testing and mitigation in Arenac County
- Michigan Indoor Radon ProgramMichigan Indoor Radon Program, run by Michigan Department of Environment, Great Lakes, and Energy, does not license radon professionals, and answers questions about testing and mitigation in Michigan.Visit the program’s page(opens in a new tab)
- Free and low-cost kitsAsk the program whether it has free or discounted kits, or compare kits you can buy.
- Compare kits
- Professionals in Michigan69 professionals are listed in Michigan.
What Michigan's program says
- Phone
- 800-723-6642
- Radon@Michigan.gov
- Licensing of radon professionals
Michigan does not license or regulate radon testing and mitigation contractors.
What it means
Arenac County, Questions
Questions about radon in Arenac County
Are radon levels high in Arenac County?
Over the 2008 to 2017 laboratory totals, 8.9% of the radon tests reported to CDC for Arenac County, Michigan were at or above 4 pCi/L, and the median reported pre-mitigation result was 0.7 pCi/L. Of 82 Michigan counties with 30 or more tests for the same period, 70 reported a higher share; pooled, the state comes to 26.9%.
Which counties border Arenac County?
Arenac County borders 4 counties: Ogemaw County, Bay County, Iosco County and Gladwin County.
Products
Arenac County, Products
Testing a home in Arenac County
In Arenac County, 8.9% of 79 tests reported to CDC over the 2008 to 2017 laboratory totals reached 4 pCi/L, against 26.9% pooled across Michigan. Zone 3 is the lowest label, yet homes at or above 4 pCi/L occur in every zone: a short-term kit (2 to 90 days) is the quick first check in Arenac County.
Test kits and monitors3
See every kit and monitor
Long-term kit
RL116 long-term radon test kit
- Lab fee extra
Method: Alpha track
In home: 90 days to 12 months
MonitorPYZYCKYH
RD17 plug-in radon detector with a rechargeable battery and color screen
- C-NRPP 2024/25: Not included
- Battery
- Alarm
- Screen
Method: Semiconductor sensor
First reading: Within 6 hours
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Arenac County, Bordering counties
Counties bordering Arenac County
Calculated by Radon411- Radon levels in Gladwin CountyEPA zone 3
15.4%at or above 4 pCi/L
Median 1.3 pCi/L · 247 tests · 6.5 points above Arenac County
- Radon levels in Ogemaw CountyEPA zone 3
15.0%at or above 4 pCi/L
Median 2.0 pCi/L · 120 tests · 6.1 points above Arenac County
- Radon levels in Bay CountyEPA zone 3
8.5%at or above 4 pCi/L
Median 1.4 pCi/L · 624 tests · 0.4 points below Arenac County
- Radon levels in Iosco CountyEPA zone 3
7.7%at or above 4 pCi/L
Median 0.7 pCi/L · 156 tests · 1.2 points below Arenac County
Arenac County, Cities and towns
Cities and towns in Arenac County
Arenac County's population has barely moved since 2020: 15,068 residents on July 1, 2025 against 14,998 then, by the Census Bureau's estimates. That works out to 41 people per square mile of land. No town dominates: Standish, the largest, has 1,449 residents, 9.6% of the total. Together its 6 incorporated places hold 22.5% of those residents; the other 77.5% live outside any of them. Reported testing is thin here: 79 tests over 2008 to 2017, or 5.2 for every 1,000 residents (2025 estimate), where Michigan as a whole comes to 11.3.
From Standish to Turner, CDC publishes no figure by town: each reads Arenac County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Standish | 1,449 | −0.8% | 9.6% |
| Au Gres | 954 | +0.7% | 6.3% |
| Sterling | 451 | +0.2% | 3.0% |
| Omer | 281 | +1.8% | 1.9% |
| Twining | 138 | Level | 0.9% |
| Turner | 117 | −0.8% | 0.8% |
6 incorporated places, as listed in the U.S. Census Bureau’s 2020 place reference files. Residents: U.S. Census Bureau population estimates for July 1, 2025 (Vintage 2025).
Arenac County, Homes
Homes in Arenac County
Arenac County is a place of houses on their own lots: 82% of its 9,536 homes are detached single-family houses, against 72% across Michigan. Half of its homes were built before 1977, close to Michigan's 1972: 26% date from before 1960 and 13% from 2000 or later. Owners live in 86% of the occupied homes (Michigan: 73%), so for most households a test and a fix are their own to order.
| Homes | Arenac County | Michigan |
|---|---|---|
| Housing units | 9,536 | 4,599,683 |
| Detached houses | 82% | 72% |
| In buildings of 5 or more | 4% | 13% |
| Mobile homes | 12% | 5% |
| Built before 1960 | 26% | 36% |
| Built since 2000 | 13% | 15% |
| Middle year built | 1977 | 1972 |
| Owner-occupied | 86% | 73% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.