West Harrison, NY Radon Mitigation and Testing

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

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

Q: What EPA Radon Zone is West Harrison in?

West Harrison is in Westchester County, EPA Zone 3.

Q: How much does radon mitigation cost in West Harrison?

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 within the New York City Metro area, West Harrison has recorded an average radon level of 8.0 pCi/L, significantly exceeding the EPA action threshold. This elevated reading in zip code 10604 reflects the area's complex geological setting and housing stock characteristics typical of suburban Westchester. Immediate radon testing and mitigation should be prioritized by all area homeowners.

8.00

pCi/L average

Above EPA Action Level

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

4.0 EPA

10+

West Harrison, NY Radon Mitigation

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

West Harrison, NY Radon Testing

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

West Harrison, New York Radon Levels

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

Radon Level	City	Home Age	Foundation	Submitted
8 pCi/L	West Harrison, NY	51-99 Years	Partial Basement	Jul 2025

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

West Harrison Radon Facts

Key details about the radon risk profile for West Harrison and the 10604 zip code area.

EPA Radon Zone

Zone 3 — Low Risk

County

Westchester County, NY

Zip Code

10604

Predicted Screening Level

< 2.0 pCi/L (Zone 3)

Avg. User Submitted Level

8.00 pCi/L

User Tests Submitted

West Harrison and the 10604 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 West Harrison, NY

What is the average radon level in West Harrison, NY?

Based on 1 user-submitted test, the average radon level in West Harrison 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 West Harrison in?

West Harrison and the 10604 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 West Harrison?

Radon mitigation in West Harrison 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 West Harrison?

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