Troy, MO Radon Mitigation and Testing

Q: What is the average radon level in Troy, MO?

Based on 4 user-submitted tests, the average radon level is 8.50 pCi/L.

Q: What EPA Radon Zone is Troy in?

Troy is in Lincoln County, EPA Zone 2.

Q: How much does radon mitigation cost in Troy?

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

Avg: 8.50 pCi/L

Lincoln County

EPA Zone 2

4 user tests

Positioned in east-central Missouri's Lincoln County within the St. Louis metro area, Troy shows concerning radon levels averaging 8.5 pCi/L, more than double the EPA action threshold. The area's karst limestone geology and glacial deposits create highly favorable conditions for radon accumulation, making professional testing and mitigation essential for all homeowners.

8.50

pCi/L average

Above EPA Action Level

Based on 4 user-submitted radon tests for homes in Troy, MO. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Troy, MO Radon Mitigation

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

Troy, MO Radon Testing

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

Troy, Missouri Radon Levels

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

Radon Level	City	Home Age	Foundation	Submitted
15 pCi/L	Troy, MO	0-20 Years	Full Basement	May 2024
4 pCi/L	Troy, MO	0-20 Years	Full Basement	Aug 2021
11 pCi/L	Troy, MO	0-20 Years	Full Basement	Dec 2017

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

Troy Radon Facts

Key details about the radon risk profile for Troy and the 63379 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Lincoln County, MO

Zip Code

63379

Predicted Screening Level

2–4 pCi/L (Zone 2)

Avg. User Submitted Level

8.50 pCi/L

User Tests Submitted

Troy and the 63379 zip code are located in Lincoln 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 Troy, MO

What is the average radon level in Troy, MO?

Based on 4 user-submitted tests, the average radon level in Troy is 8.50 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 Troy in?

Troy and the 63379 zip code are in Lincoln 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 Troy?

Radon mitigation in Troy 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 Troy?

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 Missouri

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

City	Avg User Radon Level	Submissions
Troy	8.50 pCi/L	4
Lees Summit	7.00 pCi/L	3
Columbia	3.00 pCi/L	2
House Springs	7.00 pCi/L	1
Kansas City	7.00 pCi/L	1
Springfield	7.00 pCi/L	1
Independence	5.00 pCi/L	1
Wentzville	No submissions	0