Armonk, NY Radon Mitigation and Testing

Q: What is the average radon level in Armonk, NY?

Based on 1 user-submitted tests, the average radon level is 8.00 pCi/L.

Q: What EPA Radon Zone is Armonk in?

Armonk is in Westchester County, EPA Zone 3.

Q: How much does radon mitigation cost in Armonk?

Radon mitigation typically costs between $800 and $2,000. Most standard systems fall in the $1,000-$1,500 range.

Avg: 8.00 pCi/L

Westchester County

EPA Zone 3

1 user test

Positioned in Westchester County as part of the New York City Metro area, Armonk has recorded an average radon level of 8.0 pCi/L, which significantly exceeds the EPA action threshold of 4.0 pCi/L. The community's location on bedrock geology typical of the Hudson Valley region contributes to elevated radon potential in zip code 10504. Homes in this area should be tested and likely require radon mitigation systems to reduce indoor concentrations.

8.00

pCi/L average

Above EPA Action Level

Based on 1 user-submitted radon test for homes in Armonk, NY. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Armonk, NY Radon Mitigation

Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.

Armonk, NY Radon Testing

Finding qualified radon testing professionals is the first step toward protecting your home.

Armonk, New York Radon Levels

User-submitted radon test readings from homes in the Armonk area.

Radon Level	City	Home Age	Foundation	Submitted
8 pCi/L	Armonk, NY	21-50 Years	No Basement/All Slab	Jan 2025

Have a radon test result for Armonk? Submit your reading to help other homeowners.

Armonk Radon Facts

Key details about the radon risk profile for Armonk and the 10504 zip code area.

EPA Radon Zone

Zone 3 — Low Risk

County

Westchester County, NY

Zip Code

10504

Predicted Screening Level

< 2.0 pCi/L (Zone 3)

Avg. User Submitted Level

8.00 pCi/L

User Tests Submitted

Armonk and the 10504 zip code are located in Westchester County, which has an EPA assigned Radon Zone of 3. A radon zone of 3 predicts an average indoor radon screening level less than 2 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Armonk, NY

What is the average radon level in Armonk, NY?

Based on 1 user-submitted test, the average radon level in Armonk is 8.00 pCi/L. This exceeds the EPA's recommended action level of 4.0 pCi/L, and radon testing is recommended for all homes in the area.

What EPA Radon Zone is Armonk in?

Armonk and the 10504 zip code are in Westchester County, which has an EPA assigned Radon Zone of 3. A zone of 3 predicts an average indoor radon screening level less than 2 pCi/L.

How much does radon mitigation cost in Armonk?

Radon mitigation in Armonk typically costs between $800 and $2,000. Most homes with standard basements can be mitigated with a sub-slab depressurization system in the $1,000–$1,500 range. Factors that can increase cost include complex foundations, crawl spaces, or very high radon levels.

Should I test for radon if I'm buying a home in Armonk?

Yes. Radon testing should be part of every home purchase. A short-term radon test is typically included as part of the home inspection process and costs $150–$250. If elevated levels are found, you can negotiate mitigation as part of the sale.

Most Active Radon Markets in New York

Cities with the most user-submitted radon test data in the state.

City	Avg User Radon Level	Submissions
Brooklyn	10.80 pCi/L	5
Oneonta	6.50 pCi/L	4
Clifton Park	3.75 pCi/L	4
Elmira	15.00 pCi/L	3
Saugerties	10.67 pCi/L	3
Staten Island	4.00 pCi/L	3
New York	9.00 pCi/L	2
Yonkers	8.00 pCi/L	2
Horseheads	7.50 pCi/L	2
Poughkeepsie	16.00 pCi/L	1
Buffalo	4.00 pCi/L	1
Pelham	3.00 pCi/L	1