Short-term kit
RA400 short-term liquid scintillation radon test kit, lab fee included
- Lab fee included
Method: Liquid scintillation
In home: 48 to 96 hours
Locations and reports
Radon Levels in Sutter County, California
EPA puts Sutter County in Zone 3, its lowest radon zone, and only 7 radon tests from it are on file with CDC (2008 to 2017, laboratory totals). Homes with elevated levels occur in all three zones, so only a test measures yours.
Data checked By Radon411Methodology
Highest bordering
11.4%
Butte County
- Butte
- 11.4%
- Yolo
- 2.1%
4 of 6 neighbours have 30+ tests, 2008 to 2017
Nearest county
2.1%
Yolo County, 26 miles
- Yolo
- 2.1%
- California
- 10.3%
Share at 4+ pCi/L, 48 tests, 2008 to 2017
Ground above low
None
42.7 pts below California
- Sutter
- 0.0%
- California
- 42.7%
Share of land USGS rates moderate or high potential
Tests reported
8
Too few for a share
- Sutter
- 8
- Needed
- 30
2007 to 2016, laboratory
EPA radon zone
Zone 3
Lower potential
- 1
- 2
- Zone 3
1 highest, 3 lowest
EPA predicts under 2 pCi/L indoors
Read a result for Sutter County
Starts at EPA's action level
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
- Under 20 to 1.9 pCi/L
- 2 to 4consider a fix
- 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.
The data
Sutter County, At a glance
Sutter County at a glance
Predicted: EPA radon zone
EPA Zone 3: lower predicted potential
USGS geologic potential: Low across 100% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Radon tests reported for Sutter County, 2008 to 2017, laboratory
CDC holds 7 reported tests for Sutter County over the 2008 to 2017 laboratory totals, with a median of 1.9 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Sutter County beside the counties around it is how this page reads it.
What these figures count
Only 7 tests were reported to CDC for Sutter County over 2008 to 2017 (laboratory totals), and tests are often run on homes being sold or already suspected of a problem: so few describe neither the county nor this house.
Measured: CDC tracking data. Figure above: 2008 to 2017, laboratory. Measured data period: 2005 to 2017 (every CDC figure on file).
Sutter County, Compared
Sutter County radon figures, compared
Calculated by Radon411CDC's largest figure for Sutter County rests on 8 tests over the 2007 to 2016 laboratory totals, 3 of them at or above 4 pCi/L, so each test moves its share by 12.5 points and no rank or comparison is drawn from it. Results reached as high as 7.7 pCi/L, with a middle value of 1.6 pCi/L.
Of the counties bordering it, 4 have a figure over the 2008 to 2017 laboratory totals: Butte County reported the largest share at or above 4 pCi/L, 11.4%, and Yolo County the smallest, 2.1%, with Sacramento County at 7.7% and Placer County at 7.4% between. Farther out, Napa County (50 miles away) at 10.5%, Nevada County (53 miles away) at 25.0% and Solano County (54 miles away) at 15.8% have figures too. Pooled across 56 California counties, 10.3% of reported tests reached that level; across every county in the country with a figure, 35.7%.
Statewide for the same period, El Dorado County reported the highest share (30.3%) and Sonoma County the lowest (0.8%). EPA's 1993 map puts Sutter County in Zone 3, its lowest label: a predicted county average under 2 pCi/L. USGS geology rates 100% of the county's land low radon potential.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Sutter County, Geology
The ground under Sutter County
PredictedUSGS's geologic map puts all of Sutter County's mapped land in one class: low radon potential. All of it lies in the area the map calls Great Valley, to which USGS gives a radon index of 8, in the low band (5 to 8).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Great Valley | Quaternary alluvial gravel, sand, silt, clay. | Low | 8 | 100% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Sutter County beside the ground around it
Across California 0.1% of the land is rated high; none of Sutter County's is. Of the 6 counties that border it, 4 have more moderate-potential ground, Placer County the most at 92.3%.
The map rates the ground, not the air in any home.
Local help
Sutter County, Local resources
Radon testing and mitigation in Sutter County
- California Indoor Radon ProgramCalifornia Indoor Radon Program, run by California Department of Public Health, licenses or certifies radon professionals and offers free or discounted test kits, and answers questions about testing and mitigation in California.Visit the program’s page(opens in a new tab)
- Free and low-cost kitsThe program says:
Discounted test kits can be purchased through our partner laboratory, Alpha Energy, for $14.95.
- Compare kits
- Professionals in California4 professionals are listed in California.
What California's program says
- Phone
- 1-800-745-7236
- Radonprogram@cdph.ca.gov
- Licensing of radon professionals
The Radon Program certifies all radon service providers operating in California.
What it means
Sutter County, Questions
Questions about radon in Sutter County
Are radon levels high in Sutter County?
Over the 2008 to 2017 laboratory totals, 42.9% of the radon tests reported to CDC for Sutter County, California were at or above 4 pCi/L, and the median reported pre-mitigation result was 1.9 pCi/L. Of the counties bordering it, 4 have a figure over the 2008 to 2017 laboratory totals: Butte County reported the largest share at or above 4 pCi/L, 11.4%, and Yolo County the smallest, 2.1%, with Sacramento County at 7.7% and Placer County at 7.4% between.
Which counties border Sutter County?
Sutter County borders 6 counties: Yuba County, Yolo County, Colusa County, Sacramento County, Butte County and Placer County.
Products
Sutter County, Products
Testing a home in Sutter County
No CDC figure names Sutter County; the nearest county with one, Yolo County (26 miles away), reported 2.1% of its tests at or above 4 pCi/L over the 2008 to 2017 laboratory totals, the only reading nearby until a test of this home. 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 Sutter County.
Test kits and monitors3
See every kit and monitor
Long-term kit
RL416 long-term radon test kit, lab fee included
- Lab fee included
Method: Alpha track
In home: 90 days to 12 months
Monitor
RadonPro Wi-Fi radon monitor with a built-in Geiger counter
- C-NRPP 2024/25: Not included
- Plug-in
- Wi-Fi
- Alarm
- Screen, app
First reading: Within 5 minutes
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Sutter County, Bordering counties
Counties bordering Sutter County
Calculated by Radon411- Radon levels in Butte CountyEPA zone 3
11.4%at or above 4 pCi/L
Median 0.8 pCi/L · 35 tests
- Radon levels in Sacramento CountyEPA zone 3
7.7%at or above 4 pCi/L
Median 0.9 pCi/L · 194 tests
- Radon levels in Placer CountyEPA zone 2
7.4%at or above 4 pCi/L
Median 1.1 pCi/L · 283 tests
- Radon levels in Yolo CountyEPA zone 3
2.1%at or above 4 pCi/L
Median 0.9 pCi/L · 48 tests
- Radon levels in Yuba CountyEPA zone 2
0.0%at or above 4 pCi/L
Median 0.1 pCi/L · 7 tests
- Radon levels in Colusa CountyEPA zone 3
0.0%at or above 4 pCi/L
Median 0.2 pCi/L · 1 test
Sutter County, Cities and towns
Cities and towns in Sutter County
About 98,787 people live in Sutter County by the Census Bureau's estimate for July 1, 2025, 676 fewer than in 2020 (−0.7%). That works out to 164 people per square mile of land. Yuba City alone is home to 69,485 of them, 70.3% of the total. Together its 2 incorporated places hold 79.9% of those residents; the other 20.1% live outside any of them. Reported testing is thin here: 8 tests over 2007 to 2016, or 0.1 for every 1,000 residents (2025 estimate), where California as a whole comes to 0.3.
From Yuba City to Live Oak, CDC publishes no figure by town: each reads Sutter County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Yuba City | 69,485 | −0.8% | 70.3% |
| Live Oak | 9,466 | +3.7% | 9.6% |
2 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).
Sutter County, Homes
Homes in Sutter County
Of Sutter County's 34,681 homes, 72% are detached houses, against 57% across California; 12% are in buildings of five or more homes. Half of its homes were built before 1981, close to California's 1976: 19% date from before 1960 and 22% from 2000 or later. 59% of occupied homes are lived in by their owner (California: 56%); in the rest a tenant can run a test, but a fix is the landlord's to make.
| Homes | Sutter County | California |
|---|---|---|
| Housing units | 34,681 | 14,532,683 |
| Detached houses | 72% | 57% |
| In buildings of 5 or more | 12% | 24% |
| Mobile homes | 5% | 4% |
| Built before 1960 | 19% | 27% |
| Built since 2000 | 22% | 18% |
| Middle year built | 1981 | 1976 |
| Owner-occupied | 59% | 56% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.