Louisiana Radon Levels
0Zone 1 (High)
0Zone 2 (Moderate)
64Zone 3 (Low)
All counties in Louisiana are classified as Zone 3 (lowest radon potential). However, the EPA recommends testing all homes, as elevated radon has been found in homes in every state.
| County | EPA Zone | Risk Level |
|---|---|---|
| Acadia Parish | Zone 3 | Lowest Potential |
| Allen Parish | Zone 3 | Lowest Potential |
| Ascension Parish | Zone 3 | Lowest Potential |
| Assumption Parish | Zone 3 | Lowest Potential |
| Avoyelles Parish | Zone 3 | Lowest Potential |
| Beauregard Parish | Zone 3 | Lowest Potential |
| Bienville Parish | Zone 3 | Lowest Potential |
| Bossier Parish | Zone 3 | Lowest Potential |
| Caddo Parish | Zone 3 | Lowest Potential |
| Calcasieu Parish | Zone 3 | Lowest Potential |
| Caldwell Parish | Zone 3 | Lowest Potential |
| Cameron Parish | Zone 3 | Lowest Potential |
| Catahoula Parish | Zone 3 | Lowest Potential |
| Claiborne Parish | Zone 3 | Lowest Potential |
| Concordia Parish | Zone 3 | Lowest Potential |
| De Soto Parish | Zone 3 | Lowest Potential |
| East Baton Rouge Parish | Zone 3 | Lowest Potential |
| East Carroll Parish | Zone 3 | Lowest Potential |
| East Feliciana Parish | Zone 3 | Lowest Potential |
| Evangeline Parish | Zone 3 | Lowest Potential |
| Franklin Parish | Zone 3 | Lowest Potential |
| Grant Parish | Zone 3 | Lowest Potential |
| Iberia Parish | Zone 3 | Lowest Potential |
| Iberville Parish | Zone 3 | Lowest Potential |
| Jackson Parish | Zone 3 | Lowest Potential |
| Jefferson Parish | Zone 3 | Lowest Potential |
| Jefferson Davis Parish | Zone 3 | Lowest Potential |
| Lafayette Parish | Zone 3 | Lowest Potential |
| Lafourche Parish | Zone 3 | Lowest Potential |
| La Salle Parish | Zone 3 | Lowest Potential |
| Lincoln Parish | Zone 3 | Lowest Potential |
| Livingston Parish | Zone 3 | Lowest Potential |
| Madison Parish | Zone 3 | Lowest Potential |
| Morehouse Parish | Zone 3 | Lowest Potential |
| Natchitoches Parish | Zone 3 | Lowest Potential |
| Orleans Parish | Zone 3 | Lowest Potential |
| Ouachita Parish | Zone 3 | Lowest Potential |
| Plaquemines Parish | Zone 3 | Lowest Potential |
| Pointe Coupee Parish | Zone 3 | Lowest Potential |
| Rapides Parish | Zone 3 | Lowest Potential |
| Red River Parish | Zone 3 | Lowest Potential |
| Richland Parish | Zone 3 | Lowest Potential |
| Sabine Parish | Zone 3 | Lowest Potential |
| St. Bernard Parish | Zone 3 | Lowest Potential |
| St. Charles Parish | Zone 3 | Lowest Potential |
| St. Helena Parish | Zone 3 | Lowest Potential |
| St. James Parish | Zone 3 | Lowest Potential |
| St. John the Baptist Parish | Zone 3 | Lowest Potential |
| St. Landry Parish | Zone 3 | Lowest Potential |
| St. Martin Parish | Zone 3 | Lowest Potential |
| St. Mary Parish | Zone 3 | Lowest Potential |
| St. Tammany Parish | Zone 3 | Lowest Potential |
| Tangipahoa Parish | Zone 3 | Lowest Potential |
| Tensas Parish | Zone 3 | Lowest Potential |
| Terrebonne Parish | Zone 3 | Lowest Potential |
| Union Parish | Zone 3 | Lowest Potential |
| Vermilion Parish | Zone 3 | Lowest Potential |
| Vernon Parish | Zone 3 | Lowest Potential |
| Washington Parish | Zone 3 | Lowest Potential |
| Webster Parish | Zone 3 | Lowest Potential |
| West Baton Rouge Parish | Zone 3 | Lowest Potential |
| West Carroll Parish | Zone 3 | Lowest Potential |
| West Feliciana Parish | Zone 3 | Lowest Potential |
| Winn Parish | Zone 3 | Lowest Potential |