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Rolla, MO Radon Levels

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


Rolla, MO Radon Facts

EPA Radon Zone Zone 2 — Moderate Risk 2–4 pCi/L (Zone 2)
County Phelps County, MO
Zip Code 65401
Avg. User Level 4.50 pCi/L
User Tests 2

Home to Missouri S&T University, Rolla sits in Phelps County within the Ozark Highland region where limestone and dolomite bedrock contribute to radon concerns. Local testing shows an average level of 4.5 pCi/L, which exceeds the EPA action threshold, making radon testing and mitigation important considerations for homeowners in the 65401 zip code area.

4.50
pCi/L average
Above EPA Action Level

Based on 2 user-submitted radon tests for homes in Rolla, MO. The EPA recommends taking action at or above 4.0 pCi/L.

0
4.0 EPA
10+

Rolla, MO Radon Mitigation

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

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Rolla, MO Radon Levels

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

Radon LevelCityHome AgeFoundation
5 pCi/L Rolla, MO 21-50 Years Partial Basement
4 pCi/L Rolla, MO 21-50 Years Full Basement

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

Radon Readings Near Rolla, MO

Compare radon levels in Rolla with the closest nearby cities that have user-submitted test data.

CityDistanceAvg User LevelReadings
Cuba 21.6 mi 5.00 pCi/L 1
Saint Robert 21.9 mi 7.00 pCi/L 1
Salem 26.2 mi 6.00 pCi/L 1
Leasburg 27.1 mi 4.00 pCi/L 1
Waynesville 27.6 mi 7.00 pCi/L 2
Bourbon 33.1 mi 6.00 pCi/L 1
Jefferson City 48.6 mi 6.00 pCi/L 1

Phelps County Radon Profile

Phelps County is mapped as EPA Radon Zone 2, where the local geology is predicted to produce moderate indoor screening levels between 2 and 4 pCi/L. Homeowner-submitted tests from 1 city in Phelps County average 4.50 pCi/L across 2 tests — above the EPA's 4 pCi/L action level, reinforcing the need for testing across the county. Radon is the second leading cause of lung cancer in the United States, and a short-term test is the only way to confirm a specific home's level in Phelps County.

Radon FAQ for Rolla, MO

What is the average radon level in Rolla, MO?
Based on 2 user-submitted tests, the average radon level in Rolla is 4.50 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 Rolla in?
Rolla and the 65401 zip code are in Phelps 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 Rolla?
Radon mitigation in Rolla 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 Rolla?
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.