East Helena, MT Radon Mitigation and Testing

Q: What is the average radon level in East Helena, MT?

Based on 1 user-submitted tests, the average radon level is 6.00 pCi/L.

Q: What EPA Radon Zone is East Helena in?

East Helena is in Lewis and Clark County, EPA Zone 1.

Q: How much does radon mitigation cost in East Helena?

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

Avg: 6.00 pCi/L

Lewis and Clark County

EPA Zone 1

1 user test

Situated in Lewis and Clark County near the capital city, East Helena shows an average radon level of 6.0 pCi/L, which exceeds the EPA action threshold of 4.0 pCi/L. This elevated reading in the 59635 area reflects the region's underlying geology of sedimentary formations and granite intrusions common to western Montana valleys. Homes throughout this area should be tested and mitigated as needed.

6.00

pCi/L average

Above EPA Action Level

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

4.0 EPA

10+

East Helena, MT Radon Mitigation

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

East Helena, MT Radon Testing

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

East Helena, Montana Radon Levels

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

Radon Level	City	Home Age	Foundation	Submitted
6 pCi/L	East Helena, MT	0-20 Years	Full Basement	Dec 2016

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

East Helena Radon Facts

Key details about the radon risk profile for East Helena and the 59635 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Lewis and Clark County, MT

Zip Code

59635

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Avg. User Submitted Level

6.00 pCi/L

User Tests Submitted

East Helena and the 59635 zip code are located in Lewis and Clark County, which has an EPA assigned Radon Zone of 1. A radon zone of 1 predicts an average indoor radon screening level greater than 4 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for East Helena, MT

What is the average radon level in East Helena, MT?

Based on 1 user-submitted test, the average radon level in East Helena is 6.00 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 East Helena in?

East Helena and the 59635 zip code are in Lewis and Clark County, which has an EPA assigned Radon Zone of 1. A zone of 1 predicts an average indoor radon screening level greater than 4 pCi/L.

How much does radon mitigation cost in East Helena?

Radon mitigation in East Helena 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 East Helena?

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 Montana

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

City	Avg User Radon Level	Submissions
Butte	10.20 pCi/L	10
Missoula	6.25 pCi/L	8
Florence	11.67 pCi/L	3
Bozeman	10.33 pCi/L	3
Helena	8.67 pCi/L	3
Stevensville	7.67 pCi/L	3
Sidney	7.33 pCi/L	3
Billings	5.33 pCi/L	3
Miles City	3.33 pCi/L	3
Kalispell	7.50 pCi/L	2
Great Falls	4.50 pCi/L	2
Whitefish	4.00 pCi/L	2
Ennis	9.00 pCi/L	1
Livingston	No submissions	0