Union Grove, NC Radon Levels

Q: What EPA Radon Zone is Union Grove in?

Union Grove is in Iredell County, EPA Zone 2.

Q: How much does radon mitigation cost in Union Grove?

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

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

Union Grove, NC Radon Facts

EPA Radon Zone Zone 2 — Moderate Risk 2–4 pCi/L (Zone 2)

County Iredell County, NC

Zip Code 28689

Located in Iredell County within the Charlotte Metro region, Union Grove's position in the Carolina Piedmont creates geological conditions where granite bedrock can contribute to elevated indoor radon levels. Testing data for zip code 28689 is currently limited, making professional radon testing essential for homeowners in this area. The region's mix of older farmhouses and newer suburban construction means foundation types vary significantly, each requiring tailored testing approaches.

5.50

pCi/L area average

Above EPA Action Level

Iredell County average: 5.50 pCi/L, based on 6 user-submitted tests across 3 cities in the county. No homeowner readings have been submitted for Union Grove 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+

Union Grove, NC Radon Mitigation

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

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Radon Readings Near Union Grove, NC

No homeowner tests have been submitted for Union Grove 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
Harmony	9.5 mi	5.00 pCi/L	1
Moravian Falls	16.0 mi	8.00 pCi/L	1
Wilkesboro	16.1 mi	5.00 pCi/L	1
North Wilkesboro	17.2 mi	4.00 pCi/L	1
Troutman	24.2 mi	12.00 pCi/L	1
Roaring Gap	24.9 mi	11.00 pCi/L	1
Claremont	25.4 mi	5.00 pCi/L	1
Conover	27.7 mi	4.00 pCi/L	1

Iredell County Radon Profile

EPA mapping assigns Iredell County to Radon Zone 2, indicating moderate predicted indoor screening levels in the 2 to 4 pCi/L range based on regional geology. Homeowner-submitted tests from 3 cities in Iredell County average 5.50 pCi/L across 6 tests — above the EPA's 4 pCi/L action level, reinforcing the need for testing across the county. As the second leading cause of lung cancer in the U.S., radon warrants testing in every Iredell County home regardless of zone or a neighbor's results.

Radon FAQ for Union Grove, NC

What EPA Radon Zone is Union Grove in?

Union Grove and the 28689 zip code are in Iredell 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.

Why are radon readings shown from areas near Union Grove?

No homeowner radon tests have been submitted for Union Grove yet. Because radon is driven by regional soil and bedrock geology, readings from the closest cities—and the Iredell County average—are the best available indicator of local conditions until Union Grove 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 Union Grove?

Radon mitigation in Union Grove 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 Union Grove?

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.