Short-term kitKidde
442020 short-term charcoal radon test kit
- Lab fee included
Method: Charcoal
In home: 3 days
Locations and reports
Radon Levels in Lavaca County, Texas
EPA puts Lavaca County in Zone 3, its lowest radon zone, and only 3 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
Nearest county
3.4%
Fort Bend County, 71 miles
- Fort Bend
- 3.4%
- Texas
- 10.4%
Share at 4+ pCi/L, 117 tests, 2007 to 2016
Ground above low
None
27.3 pts below Texas
- Lavaca
- 0.0%
- Texas
- 27.3%
Share of land USGS rates moderate or high potential
Tests reported
3
Too few for a share
- Lavaca
- 3
- Needed
- 30
2008 to 2017, 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 Lavaca 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
Lavaca County, At a glance
Lavaca 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 Lavaca County, 2008 to 2017, laboratory
CDC holds 3 reported tests for Lavaca County over the 2008 to 2017 laboratory totals, with a median of 0.1 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Lavaca County beside the counties around it is how this page reads it.
What these figures count
Only 3 tests were reported to CDC for Lavaca 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).
Lavaca County, Compared
Lavaca County radon figures, compared
Calculated by Radon411CDC's largest figure for Lavaca County rests on 3 tests over the 2008 to 2017 laboratory totals, 0 of them at or above 4 pCi/L, so each test moves its share by 33.3 points and no rank or comparison is drawn from it. Results reached as high as 0.8 pCi/L, with a middle value of 0.1 pCi/L.
The nearest counties with a figure are Fort Bend County (71 miles away) at 3.4%, Travis County (83 miles away) at 9.3% and Brazoria County (90 miles away) at 6.3%. Pooled across 140 Texas counties, 10.4% of reported tests reached that level; across every county in the country with a figure, 35.8%.
Statewide for the same period, Randall County reported the highest share (71.4%) and Nueces County the lowest (0.0%). EPA's 1993 map puts Lavaca 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.
Lavaca County, Geology
The ground under Lavaca County
PredictedUSGS's geologic map puts all of Lavaca County's mapped land in one class: low radon potential. All of it lies in the area the map calls Coastal Plain, 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 |
|---|---|---|---|---|
| Coastal Plain | Cretaceous through Quaternary marine sandstone, shale, chalk, limestone, siltstone, clay, and lignite. | Low | 7 | 100% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Lavaca County beside the ground around it
Across Texas 0.5% of the land is rated high; none of Lavaca County's is. None of the 6 counties that border it has any moderate-potential ground either.
The map rates the ground, not the air in any home.
Local help
Lavaca County, Local resources
Radon testing and mitigation in Lavaca County
- Texas Radon GroupTexas Radon Group, run by Texas Tech University, does not license radon professionals and offers free or discounted test kits, and answers questions about testing and mitigation in Texas.Visit the program’s page(opens in a new tab)
- Free and low-cost kitsThe program says:
The Texas Radon Group offers free radon test kits for Texas individuals who qualify.
- Compare kits
- Professionals in Texas7 professionals are listed in Texas.
What Texas's program says
- Licensing of radon professionals
There are no radon certification requirements for the State of Texas at this time, but the National Radon Proficiency Program lists radon testers and mitigators within Texas that have passed a rigorous national certification program.
What it means
Lavaca County, Questions
Questions about radon in Lavaca County
Are radon levels high in Lavaca County?
Over the 2008 to 2017 laboratory totals, 0.0% of the radon tests reported to CDC for Lavaca County, Texas were at or above 4 pCi/L, and the median reported pre-mitigation result was 0.1 pCi/L. Of the 8 nearest counties with a figure, within 106 miles, the share of tests at or above 4 pCi/L runs from 0.0% to 9.3%.
Which counties border Lavaca County?
Lavaca County borders 6 counties: Colorado County, Jackson County, DeWitt County, Fayette County, Gonzales County and Victoria County.
Products
Lavaca County, Products
Testing a home in Lavaca County
No CDC figure names Lavaca County; the nearest county with one, Fort Bend County (71 miles away), reported 3.4% of its tests at or above 4 pCi/L over the 2007 to 2016 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 Lavaca 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
MonitorAEGTEST
HOUND-1085 palm-sized rechargeable radon detector
- 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
Lavaca County, Bordering counties
Counties bordering Lavaca County
Calculated by Radon411- Radon levels in Colorado CountyEPA zone 3
0.0%at or above 4 pCi/L
Median 1.5 pCi/L · 1 test
- Radon levels in Jackson CountyEPA zone 3
0.0%at or above 4 pCi/L
Median 0.1 pCi/L · 1 test
- Radon levels in DeWitt CountyEPA zone 3
0.0%at or above 4 pCi/L
Median 1.3 pCi/L · 2 tests
- Radon levels in Fayette CountyEPA zone 3
0.0%at or above 4 pCi/L
Median 0.1 pCi/L · 6 tests
- Radon levels in Gonzales CountyEPA zone 3
0.0%at or above 4 pCi/L
Median 0.1 pCi/L · 6 tests
- Radon levels in Victoria CountyEPA zone 3
0.0%at or above 4 pCi/L
Median 0.6 pCi/L · 5 tests
Lavaca County, Cities and towns
Cities and towns in Lavaca County
The Census Bureau estimates 20,651 residents in Lavaca County for July 1, 2025, 296 more than in 2020 (+1.5%). That works out to 21 people per square mile of land. Yoakum, the largest place on its list (5,900 residents in all), extends beyond Lavaca County, so no share of the total is worked out for it. CDC's 3 reported tests for 2008 to 2017 work out to 0.1 per 1,000 residents (2025 estimate), close to Texas' 0.1.
From Yoakum to Moulton, CDC publishes no figure by town: each reads Lavaca County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Yoakumextends beyond Lavaca County | 5,900 | −0.3% | Counted whole |
| Hallettsville | 2,736 | +0.2% | 13.2% |
| Shiner | 2,165 | +1.8% | 10.5% |
| Moulton | 847 | −1.1% | 4.1% |
4 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). A place that extends beyond Lavaca County is counted whole, so it has no share.
Lavaca County, Homes
Homes in Lavaca County
Lavaca County is a place of houses on their own lots: 78% of its 10,499 homes are detached single-family houses, against 65% across Texas. The homes are older than Texas' as a whole: half were built before 1976 (1990 for Texas), and 31% date from before 1960. Owners live in 76% of the occupied homes (Texas: 63%), so for most households a test and a fix are their own to order.
| Homes | Lavaca County | Texas |
|---|---|---|
| Housing units | 10,499 | 11,890,808 |
| Detached houses | 78% | 65% |
| In buildings of 5 or more | 2% | 21% |
| Mobile homes | 16% | 7% |
| Built before 1960 | 31% | 13% |
| Built since 2000 | 24% | 37% |
| Middle year built | 1976 | 1990 |
| Owner-occupied | 76% | 63% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.