Monroe, NC Radon Levels

Q: What EPA Radon Zone is Monroe in?

Monroe is in Union County, EPA Zone 3.

Q: Why are radon readings shown from areas near Monroe?

No homeowner radon tests have been submitted for Monroe yet, so readings from the closest cities and the Union County average are used as the best available indicator of local conditions. The EPA recommends testing every individual home.

Q: How much does radon mitigation cost in Monroe?

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

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

Monroe, NC Radon Facts

EPA Radon Zone Zone 3 — Low Risk < 2.0 pCi/L (Zone 3)

County Union County, NC

Zip Code 28110

Positioned in Union County within the Charlotte metropolitan area, Monroe sits on North Carolina's Piedmont geological formations where granite and metamorphic rocks can contribute to elevated radon levels in residential settings. Testing data remains insufficient for both the 28110 and 28112 zip codes, emphasizing the importance of individual home radon assessment. The region's mix of older established neighborhoods and new suburban developments each present unique foundation characteristics that influence radon entry patterns.

4.00

pCi/L area average

Above EPA Action Level

Union County average: 4.00 pCi/L, based on 1 user-submitted test across 1 city in the county. No homeowner readings have been submitted for Monroe itself yet, so this county figure is the closest available benchmark. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Monroe, NC Radon Mitigation

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

Need Radon Mitigation or Testing in Monroe?

100% Free, No-Obligation Quotes
Matches You with State-Licensed Union County Pros

1-800-299-3578 704-626-2739 (local) Toll-free · Mon–Fri 8am–6pm ET

Radon Readings Near Monroe, NC

No homeowner tests have been submitted for Monroe yet. The closest cities with user-submitted radon data are shown below — explore them to gauge local conditions. Radon varies by home, so testing is the only way to know your level.

City	Distance	Avg User Level	Readings
Waxhaw	10.5 mi	4.00 pCi/L	1
Charlotte	23.9 mi	7.33 pCi/L	3
Concord	30.2 mi	4.00 pCi/L	1
Albemarle	33.8 mi	6.00 pCi/L	1
Huntersville	35.8 mi	3.50 pCi/L	2
Mount Holly	36.8 mi	3.00 pCi/L	1
Kannapolis	37.3 mi	7.00 pCi/L	1
Gastonia	39.8 mi	3.00 pCi/L	1

Union County Radon Profile

Local geology places Union County in EPA Radon Zone 3, where predicted indoor radon averages fall below 2 pCi/L — though no county is risk-free. Homeowner-submitted tests from 1 city in Union County average 4.00 pCi/L across 1 test — above the EPA's 4 pCi/L action level, reinforcing the need for testing across the county. Since radon is the second leading cause of lung cancer nationally, the EPA urges every household in Union County to test, as levels can differ between neighboring homes.

Radon FAQ for Monroe, NC

What EPA Radon Zone is Monroe in?

Monroe and the 28110 zip code are in Union County, which has an EPA assigned Radon Zone of 3. A zone of 3 predicts an average indoor radon screening level less than 2 pCi/L.

Why are radon readings shown from areas near Monroe?

No homeowner radon tests have been submitted for Monroe yet. Because radon is driven by regional soil and bedrock geology, readings from the closest cities—and the Union County average—are the best available indicator of local conditions until Monroe homeowners submit their own results. The EPA still recommends testing every individual home, since levels can vary significantly from house to house.

How much does radon mitigation cost in Monroe?

Radon mitigation in Monroe 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 Monroe?

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.