Walnut Grove, MO Radon Levels

Q: What EPA Radon Zone is Walnut Grove in?

Walnut Grove is in Greene County, EPA Zone 2.

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

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

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

Walnut Grove, MO Radon Facts

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

County Greene County, MO

Zip Code 65770

Part of Greene County within the Springfield metropolitan area (ZIP 65770), Walnut Grove sits on the Ozark Plateau where limestone and dolomite bedrock create moderate-to-high radon potential. While specific testing data for this community remains limited, the area's karst geology and cave systems indicate conditions favorable for radon production. Residents should prioritize radon testing, particularly given the prevalence of limestone bedrock throughout Greene County.

7.00

pCi/L area average

Above EPA Action Level

Greene County average: 7.00 pCi/L, based on 1 user-submitted test across 1 city in the county. No homeowner readings have been submitted for Walnut 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+

Walnut Grove, MO 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 Walnut Grove, MO

No homeowner tests have been submitted for Walnut 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
Springfield	19.0 mi	7.00 pCi/L	1
Stockton	27.8 mi	4.00 pCi/L	1
Marshfield	32.1 mi	7.00 pCi/L	1
Pittsburg	32.4 mi	6.00 pCi/L	1
Reeds Spring	49.4 mi	6.00 pCi/L	1

Greene County Radon Profile

The soils and bedrock of Greene County place it in EPA Radon Zone 2, a moderate-risk classification with predicted indoor averages of 2 to 4 pCi/L. Homeowner-submitted tests from 1 city in Greene County average 7.00 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 Greene County to test, as levels can differ between neighboring homes.

Radon FAQ for Walnut Grove, MO

What EPA Radon Zone is Walnut Grove in?

Walnut Grove and the 65770 zip code are in Greene 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 Walnut Grove?

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

Radon mitigation in Walnut 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 Walnut 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.