Johnstown, PA Radon Mitigation and Testing

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

Based on 3 user-submitted tests, the average radon level is 7.30 pCi/L.

Q: What EPA Radon Zone is Johnstown in?

Johnstown is in Cambria County, EPA Zone 2.

Q: How much does radon mitigation cost in Johnstown?

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

Avg: 7.30 pCi/L

Cambria County

EPA Zone 2

3 user tests

Johnstown is located in Cambria County, Pennsylvania. With 3 user-submitted readings averaging 7.30 pCi/L, the area exceeds the EPA's 4.0 pCi/L action threshold, and testing is strongly recommended for homeowners in the 15901 zip code.

7.30

pCi/L average

Above EPA Action Level

Based on 3 user-submitted radon tests for homes in Johnstown, PA. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Johnstown, PA Radon Mitigation

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

Johnstown, PA Radon Testing

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

Johnstown, Pennsylvania Radon Levels

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

Radon Level	City	Home Age	Foundation	Submitted
5 pCi/L	Johnstown, PA	51-99 Years	Full Basement	Oct 2021
10 pCi/L	Johnstown, PA	—	Full Basement	May 2021
7 pCi/L	Johnstown, PA	21-50 Years	Full Basement	Jul 2018

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

Johnstown Radon Facts

Key details about the radon risk profile for Johnstown and the 15901 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Cambria County, PA

Zip Code

15901

Predicted Screening Level

2–4 pCi/L (Zone 2)

Avg. User Submitted Level

7.30 pCi/L

User Tests Submitted

Johnstown and the 15901 zip code are located in Cambria County, which has an EPA assigned Radon Zone of 2. A radon zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Johnstown, PA

What is the average radon level in Johnstown, PA?

Based on 3 user-submitted tests, the average radon level in Johnstown is 7.30 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 Johnstown in?

Johnstown and the 15901 zip code are in Cambria 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 Johnstown?

Radon mitigation in Johnstown 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 Johnstown?

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 Pennsylvania

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

City	Avg User Radon Level	Submissions
State College	10.00 pCi/L	14
Chambersburg	10.14 pCi/L	7
Easton	12.33 pCi/L	6
Butler	12.40 pCi/L	5
Dingmans Ferry	5.80 pCi/L	5
Hanover	14.00 pCi/L	4
Mechanicsburg	13.75 pCi/L	4
Greenville	10.75 pCi/L	4
Pittsburgh	9.25 pCi/L	4
Albrightsville	9.00 pCi/L	4
Philadelphia	8.00 pCi/L	4
Lackawaxen	15.33 pCi/L	3
York	11.67 pCi/L	3
Elizabethtown	9.67 pCi/L	3
Johnstown	7.33 pCi/L	3
West Chester	6.67 pCi/L	3
Danville	5.67 pCi/L	3
Springfield	5.67 pCi/L	3
East Stroudsburg	5.00 pCi/L	3
Langhorne	4.67 pCi/L	3