Pacific, MO Radon Levels

Q: What EPA Radon Zone is Pacific in?

Pacific is in Franklin County, EPA Zone 2.

Q: How much does radon mitigation cost in Pacific?

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

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

Pacific, MO Radon Facts

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

County Franklin County, MO

Zip Code 63069

Positioned in Franklin County within the St. Louis Metro area, Pacific sits on limestone bedrock formations that can contribute to elevated radon levels in enclosed basement spaces. The community's mix of older homes and newer suburban development creates varying radon entry patterns depending on foundation construction and soil contact. Residents in zip code 63069 should prioritize radon testing given the area's geological risk factors.

7.33

pCi/L area average

Above EPA Action Level

Franklin County average: 7.33 pCi/L, based on 3 user-submitted tests across 3 cities in the county. No homeowner readings have been submitted for Pacific 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+

Pacific, 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 Pacific, MO

No homeowner tests have been submitted for Pacific 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
Labadie	7.2 mi	4.00 pCi/L	1
House Springs	11.7 mi	7.00 pCi/L	1
Ballwin	13.1 mi	4.00 pCi/L	1
Chesterfield	13.9 mi	5.00 pCi/L	1
Union	15.1 mi	13.00 pCi/L	1
Fenton	15.1 mi	16.00 pCi/L	2
Imperial	17.8 mi	13.00 pCi/L	1
Arnold	20.0 mi	10.50 pCi/L	2

Franklin County Radon Profile

EPA mapping assigns Franklin 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 Franklin County average 7.33 pCi/L across 3 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 Franklin County home regardless of zone or a neighbor's results.

Radon FAQ for Pacific, MO

What EPA Radon Zone is Pacific in?

Pacific and the 63069 zip code are in Franklin 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 Pacific?

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

Radon mitigation in Pacific 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 Pacific?

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.