Short-term kit
RA100 short-term liquid scintillation radon test kit
- Lab fee extra
Method: Liquid scintillation
In home: 48 to 96 hours
Locations and reports
Radon Levels in Orleans Parish, Louisiana
EPA puts Orleans Parish in Zone 3, its lowest radon zone, and most reported tests there come back low, though 0.0% of 198 (2022) 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
0.0%
0.4 pts below LA
- Orleans Parish
- 0.0%
- Louisiana
- 0.4%
198 tests, 2022
Median result
0.3pCi/L
Below action level
- Orleans Parish
- 0.3 pCi/L
- EPA
- 4.0 pCi/L
Midpoint of the tests, 2022
Tests reported
198
5th of 9 by tests
- Orleans Parish
- 198
- Caddo Parish
- 486
Reported to CDC before any fix, 2022
EPA radon zone
Zone 3
Lower potential
- 1
- 2
- Zone 3
1 highest, 3 lowest
EPA predicts under 2 pCi/L indoors
Rank in Louisiana
2 of 9
Top quarter
- Orleans Parish
- 0.0%
- Caddo Parish
- 1.9%
By share, of 9 with 30+ tests
Read a result for Orleans Parish
Starts at Orleans Parish's median, 0.3 pCi/L
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 0.3 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. Orleans Parish's median reported result, 2022.
The data
Orleans Parish, At a glance
Orleans Parish 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 Orleans Parish, 2022
| Year | Share of reported tests at or above 4 pCi/L |
|---|---|
| 2014 | 0.0% |
| 2015 | 0.0% |
| 2016 | 0.0% |
| 2017 | 0.0% |
| 2018 | 0.0% |
| 2019 | 0.0% |
| 2020 | 0.0% |
| 2021 | 0.0% |
| 2022 | 0.0% |
2022: 0.0%. Across these years the share ran from 0.0% to 0.0%. Each column counts radon tests reported to CDC that year, not homes.
What these figures count
These are the 198 tests reported to CDC for Orleans Parish over 2022, many from homes being sold or already suspected of a problem: they describe the parish's reported tests, not this house.
Measured: CDC tracking data. Figure above: 2022. Measured data period: 2005 to 2022 (every CDC figure on file).
Orleans Parish, Compared
Orleans Parish radon figures, compared
Calculated by Radon411Only 0 of 198 radon tests reported for Orleans Parish in 2022 reached 4 pCi/L (0.0%). The median result, 0.3 pCi/L, sits below 2, well under EPA's 4 pCi/L action level, and the top reported result was 0.6 pCi/L.
Across 12 Louisiana counties pooled together, 0.4% of tests reached that level, so Orleans Parish runs 0.4 points below its state. Against the national pool of 23.9%, the gap is 23.9 points lower. Its place in the state: 2nd of 9 Louisiana counties with 30 or more tests for the same period.
Zone 3 on EPA's map (predicted average under 2 pCi/L) and a 0.0% share point the same way here.
Below the action level, 198 tests (100.0%) came in under 2 pCi/L, against 98.1% statewide, and 0 tests (0.0%) fell between 2 and 4, against 1.5% statewide. Over 5 years of annual figures the share held within 2 points, from 0.0% in 2017 to 0.0% in 2022; its peak was 0.0% in 2017. USGS geology rates 100% of the county's land low radon potential.
The busiest year on file was 2018, with 351 tests reported; the quietest, 2020, had 12.
Orleans ParishLouisiana, pooled
| Year | Tests | Orleans Parish, at or above 4 pCi/L | Louisiana, pooled |
|---|---|---|---|
| 2017 | 66 | 0.0% | 2.6% |
| 2018 | 351 | 0.0% | 0.5% |
| 2019 | 186 | 0.0% | 2.0% |
| 2021 | 45 | 0.0% | 3.9% |
| 2022 | 198 | 0.0% | 0.4% |
Pooled shares: Radon411's sum of CDC's county counts for one period.
Orleans Parish, Geology
The ground under Orleans Parish
PredictedUSGS's geologic map puts all of Orleans Parish's mapped land in one class: low radon potential. All of it lies in the area the map calls Delta, to which USGS gives a radon index of 6, in the low band (5 to 8).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Delta | Alluvium and marsh. | Low | 6 | 100% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Orleans Parish beside the ground around it
Neither Orleans Parish nor Louisiana as a whole has any land USGS rates above low potential. None of the 4 parishes that border it has any moderate-potential ground either.
The map rates the ground, not the air in any home.
Local help
Orleans Parish, Local resources
Radon testing and mitigation in Orleans Parish
- Louisiana's radon programLouisiana Department of Environmental QualityLouisiana's radon program answers questions about testing, mitigation and the rules in Louisiana.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
- See the Louisiana directoryNo professionals are listed in Louisiana yet. The state program can point you to registered testers and mitigators.
What it means
Orleans Parish, Questions
Questions about radon in Orleans Parish
Are radon levels high in Orleans Parish?
In 2022, 0.0% of the radon tests reported to CDC for Orleans Parish, Louisiana were at or above 4 pCi/L, and the median reported pre-mitigation result was 0.3 pCi/L. Of 9 Louisiana counties with 30 or more tests for the same period, 1 reported a higher share; pooled, the state comes to 0.4%.
Which counties border Orleans Parish?
Orleans Parish borders 4 parishes: Jefferson Parish, St. Tammany Parish, St. Bernard Parish and Plaquemines Parish.
Products
Orleans Parish, Products
Testing a home in Orleans Parish
In Orleans Parish, 0.0% of 198 tests reported to CDC in 2022 reached 4 pCi/L, against 0.4% pooled across Louisiana. 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 Orleans Parish.
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
Monitor
Wave Plus battery radon and air quality 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
Orleans Parish, Bordering parishes
Parishes bordering Orleans Parish
Calculated by Radon411- Radon levels in Jefferson ParishEPA zone 3
0.0%at or above 4 pCi/L
Median 1.7 pCi/L · 6 tests · 0.0 points above Orleans Parish
- Radon levels in St. Tammany ParishEPA zone 3
No CDC figure for 2022; its page reads it against its own neighbours.
- Radon levels in St. Bernard ParishEPA zone 3
No CDC figure for 2022; its page reads it against its own neighbours.
- Radon levels in Plaquemines ParishEPA zone 3
No CDC figure for 2022; its page reads it against its own neighbours.
Orleans Parish, Cities and towns
Cities and towns in Orleans Parish
Orleans Parish has been losing residents: from 383,361 in 2020 to 362,154 on July 1, 2025, a fall of 5.5% by the Census Bureau's estimates. Packed into its land, that is 2,137 people per square mile. New Orleans, its one incorporated place, has 362,154 residents, 100.0% of the total. CDC's 198 reported tests for 2022 work out to 0.5 per 1,000 residents (2025 estimate), close to Louisiana's 0.4.
New Orleans is the one incorporated place here; CDC publishes no figure by town, so it reads Orleans Parish's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| New Orleans | 362,154 | −5.5% | 100.0% |
One incorporated place, 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).
Orleans Parish, Homes
Homes in Orleans Parish
Fewer than six in ten of Orleans Parish's 194,758 homes are detached houses (46%, against 65% across Louisiana); the rest are attached, in shared buildings or mobile. The homes are older than Louisiana's as a whole: half were built before 1959 (1982 for Louisiana), and 51% date from before 1960. 51% of occupied homes are lived in by their owner (Louisiana: 67%); in the rest a tenant can run a test, but a fix is the landlord's to make.
| Homes | Orleans Parish | Louisiana |
|---|---|---|
| Housing units | 194,758 | 2,094,002 |
| Detached houses | 46% | 65% |
| In buildings of 5 or more | 21% | 11% |
| Mobile homes | under 1% | 13% |
| Built before 1960 | 51% | 19% |
| Built since 2000 | 14% | 27% |
| Middle year built | 1959 | 1982 |
| Owner-occupied | 51% | 67% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.