Washington, PA Radon Levels

Q: What is the average radon level in Washington, PA?

Based on 1 user-submitted tests, the average radon level is 5.00 pCi/L.

Q: What EPA Radon Zone is Washington in?

Washington is in Washington County, EPA Zone 2.

Q: How much does radon mitigation cost in Washington?

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

Check local Washington radon levels and find certified testing and mitigation professionals to keep your home safe

Washington, PA Radon Facts

EPA Radon Zone Zone 2 — Moderate Risk 2–4 pCi/L (Zone 2)

County Washington County, PA

Zip Code 15301

Avg. User Level 5.00 pCi/L

User Tests 1

Positioned in Washington County within the Pittsburgh Metro area, Washington records an average radon level of 5.0 pCi/L that exceeds EPA action guidelines. The community sits on Pennsylvanian-era sedimentary rocks and coal measures that create conditions favorable for radon production. Local homes in zip code 15301, ranging from historic properties to newer construction with typical basement foundations, require professional testing and likely mitigation systems.

5.00

pCi/L average

Above EPA Action Level

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

4.0 EPA

10+

Washington, PA Radon Mitigation

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

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Washington, Pennsylvania Radon Levels

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

Radon Level	City	Home Age	Foundation	Submitted
5 pCi/L	Washington, PA	51-99 Years	Full Basement	Nov 2022

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

Washington County Radon Profile

EPA mapping assigns Washington County to Radon Zone 2, indicating moderate predicted indoor screening levels in the 2 to 4 pCi/L range based on regional geology. Homeowner-submitted tests from 3 cities in Washington County average 7.80 pCi/L across 5 tests — above the EPA's 4 pCi/L action level, reinforcing the need for testing across the county. As the second leading cause of lung cancer in the U.S., radon warrants testing in every Washington County home regardless of zone or a neighbor's results.

Radon FAQ for Washington, PA

What is the average radon level in Washington, PA?

Based on 1 user-submitted test, the average radon level in Washington is 5.00 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 Washington in?

Washington and the 15301 zip code are in Washington County, which has an EPA assigned Radon Zone of 2. A zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L.

How much does radon mitigation cost in Washington?

Radon mitigation in Washington 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 Washington?

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.

Radon Levels Near Washington, PA

User-submitted radon levels from the cities closest to Washington with recorded test data. Explore nearby communities to compare local readings.

City	Distance	Avg User Level	Submissions
Canonsburg	8.3 mi	8.33 pCi/L	3
Bethel Park	15.4 mi	10.00 pCi/L	1
South Park	16.1 mi	7.00 pCi/L	2
Burgettstown	16.5 mi	9.00 pCi/L	1
West Mifflin	22.7 mi	9.00 pCi/L	1
Pittsburgh	23.5 mi	9.25 pCi/L	4
Mckeesport	24.0 mi	7.00 pCi/L	1