Radon zones in New York
Last updated
EPA’s Map of Radon Zones places 62 New York counties in its three radon potential zones: 34 in Zone 1 (highest), 13 in Zone 2 (moderate), and 15 in Zone 3 (low).
What this means for New York homes
Most New York counties fall in Zone 1. EPA predicts average indoor screening levels above 4 pCi/L across much of New York, so elevated radon is common. Testing is especially worthwhile here, and radon-resistant construction features make sense for new homes.
EPA’s guidance is the same everywhere: test your home, fix it if the level is 4 pCi/L or higher, and consider fixing between 2 and 4 pCi/L. The zone map is from 1993 and should not be used to decide whether a single home needs testing.
New York radon program
EPA lists the following state contact for New York: NY State Department of Health, Radiological Health/Radon, phone 518-402-7556. Website: www.health.ny.gov/environmental/radiological/radon/radon.htm. State programs can tell you about local testing data, free or discounted test kits, disclosure rules for home sales, and credentialed radon professionals.
New York counties and their EPA radon zones
| County | EPA radon zone |
|---|---|
| Albany County | Zone 1 |
| Allegany County | Zone 1 |
| Bronx County | Zone 3 |
| Broome County | Zone 1 |
| Cattaraugus County | Zone 1 |
| Cayuga County | Zone 1 |
| Chautauqua County | Zone 1 |
| Chemung County | Zone 1 |
| Chenango County | Zone 1 |
| Clinton County | Zone 2 |
| Columbia County | Zone 1 |
| Cortland County | Zone 1 |
| Delaware County | Zone 1 |
| Dutchess County | Zone 1 |
| Erie County | Zone 1 |
| Essex County | Zone 3 |
| Franklin County | Zone 3 |
| Fulton County | Zone 3 |
| Genesee County | Zone 1 |
| Greene County | Zone 1 |
| Hamilton County | Zone 3 |
| Herkimer County | Zone 3 |
| Jefferson County | Zone 2 |
| Kings County | Zone 3 |
| Lewis County | Zone 2 |
| Livingston County | Zone 1 |
| Madison County | Zone 1 |
| Monroe County | Zone 2 |
| Montgomery County | Zone 2 |
| Nassau County | Zone 3 |
| New York County | Zone 3 |
| Niagara County | Zone 2 |
| Oneida County | Zone 2 |
| Onondaga County | Zone 1 |
| Ontario County | Zone 1 |
| Orange County | Zone 1 |
| Orleans County | Zone 2 |
| Oswego County | Zone 2 |
| Otsego County | Zone 1 |
| Putnam County | Zone 1 |
| Queens County | Zone 3 |
| Rensselaer County | Zone 1 |
| Richmond County | Zone 3 |
| Rockland County | Zone 3 |
| Saratoga County | Zone 2 |
| Schenectady County | Zone 2 |
| Schoharie County | Zone 1 |
| Schuyler County | Zone 1 |
| Seneca County | Zone 1 |
| St. Lawrence County | Zone 2 |
| Steuben County | Zone 1 |
| Suffolk County | Zone 3 |
| Sullivan County | Zone 1 |
| Tioga County | Zone 1 |
| Tompkins County | Zone 1 |
| Ulster County | Zone 1 |
| Warren County | Zone 3 |
| Washington County | Zone 1 |
| Wayne County | Zone 2 |
| Westchester County | Zone 3 |
| Wyoming County | Zone 1 |
| Yates County | Zone 1 |
County names follow the 2020 Census. Zones from the EPA Map of Radon Zones (text version). Rows marked “zone of” use the zone EPA gave the predecessor or surrounding county.
Next steps: read how to test your home, check a result with the level calculator, or look up a single address by ZIP code.