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 Real County, Texas
EPA puts Real 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
Nearest county
6.6%
Bexar County, 83 miles
- Bexar
- 6.6%
- Texas
- 10.4%
Share at 4+ pCi/L, 197 tests, 2007 to 2016
Ground above low
None
27.3 pts below Texas
- Real
- 0.0%
- Texas
- 27.3%
Share of land USGS rates moderate or high potential
Tests reported
0
None published
A home here needs its own test
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 Real 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
Real County, At a glance
Real 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
No CDC test figures here
CDC has published no radon test figures for Real County. Bexar County, 83 miles away, is the nearest county with a figure over the 2007 to 2016 laboratory totals.
Real County, Compared
Real County radon figures, compared
Calculated by Radon411No CDC figure names Real County, in any year or ten-year total; over the 2007 to 2016 laboratory totals, the agency's counts reach 140 Texas counties without it. Pooled across 140 Texas counties, 10.4% of reported tests reached that level; across every county in the country with a figure, 35.8%.
The nearest counties with a figure are Bexar County (83 miles away) at 6.6%, Travis County (127 miles away) at 9.3% and Williamson County (144 miles away) at 2.0%. 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 Real 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.
Real County, Geology
The ground under Real County
PredictedUSGS's geologic map puts all of Real County's mapped land in one class: low radon potential. All of it lies in the area the map calls Southern High Plains and Plateaus, 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 |
|---|---|---|---|---|
| Southern High Plains and Plateaus | Paleozoic and Mesozoic sandstone, limestone, shale. | 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.
Real County beside the ground around it
Across Texas 0.5% of the land is rated high; none of Real 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
Real County, Local resources
Radon testing and mitigation in Real 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
Real County, Questions
Questions about radon in Real County
Are radon levels high in Real County?
No CDC testing statistics are published here for Real County, Texas yet. Of the 8 nearest counties with a figure, within 218 miles, the share of tests at or above 4 pCi/L runs from 0.0% to 17.1%.
Which counties border Real County?
Real County borders 4 counties: Kerr County, Edwards County, Uvalde County and Bandera County.
Products
Real County, Products
Testing a home in Real County
No CDC figure names Real County; the nearest county with one, Bexar County (83 miles away), reported 6.6% 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 Real 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
Wave Radon battery smart radon monitor
- C-NRPP 2024/25: Not included
- Battery
- Bluetooth
- App only
Method: Alpha spectrometry
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Real County, Bordering counties
Counties bordering Real County
Calculated by Radon411- Radon levels in Kerr CountyEPA zone 3
12.5%at or above 4 pCi/L
Median 1.1 pCi/L · 16 tests
- Radon levels in Edwards CountyEPA zone 3
No CDC figure for 2007 to 2016; its page reads it against its own neighbours.
- Radon levels in Uvalde CountyEPA zone 3
No CDC figure for 2007 to 2016; its page reads it against its own neighbours.
- Radon levels in Bandera CountyEPA zone 3
No CDC figure for 2007 to 2016; its page reads it against its own neighbours.
Real County, Cities and towns
Cities and towns in Real County
Real County's population has barely moved since 2020: 2,745 residents on July 1, 2025 against 2,749 then, by the Census Bureau's estimates. Spread over its land, that is 3.9 people to the square mile. No town dominates: Camp Wood, the largest, has 509 residents, 18.5% of the total. Together its 2 incorporated places hold 30.5% of those residents; the other 69.5% live outside any of them. CDC publishes no radon test count for Real County; across Texas its counts for 2007 to 2016 come to 0.1 tests for every 1,000 residents (2025 estimate).
From Camp Wood to Leakey, CDC publishes no figure by town: each reads Real County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Camp Wood | 509 | −2.7% | 18.5% |
| Leakey | 328 | +1.9% | 11.9% |
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).
Real County, Homes
Homes in Real County
Of Real County's 1,829 homes, 65% are detached houses, against 65% across Texas; 31% are mobile homes. Half of its homes were built before 1986, close to Texas' 1990: 17% date from before 1960 and 34% from 2000 or later. 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 | Real County | Texas |
|---|---|---|
| Housing units | 1,829 | 11,890,808 |
| Detached houses | 65% | 65% |
| In buildings of 5 or more | under 1% | 21% |
| Mobile homes | 31% | 7% |
| Built before 1960 | 17% | 13% |
| Built since 2000 | 34% | 37% |
| Middle year built | 1986 | 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.