Williams, OR Radon Mitigation and Testing

Q: What EPA Radon Zone is Williams in?

Williams is in Josephine County, EPA Zone 3.

Q: How much does radon mitigation cost in Williams?

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

Josephine County

EPA Zone 3

Nestled in Josephine County within Oregon's Rogue Valley, Williams sits where Klamath Mountains geology creates EPA Zone 3 radon conditions amid diverse rock formations. Testing data for this 97544 community is currently limited, underscoring the need for individual property assessment. The area's complex geological setting, combining metamorphic and igneous rocks with alluvial deposits, can produce variable radon levels that only direct testing can accurately determine.

Williams, OR Radon Mitigation

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

Williams, OR Radon Testing

Finding qualified radon testing professionals is the first step toward protecting your home.

Williams Radon Facts

Key details about the radon risk profile for Williams and the 97544 zip code area.

EPA Radon Zone

Zone 3 — Low Risk

County

Josephine County, OR

Zip Code

97544

Predicted Screening Level

< 2.0 pCi/L (Zone 3)

Williams and the 97544 zip code are located in Josephine County, which has an EPA assigned Radon Zone of 3. A radon zone of 3 predicts an average indoor radon screening level less than 2 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Williams, OR

What EPA Radon Zone is Williams in?

Williams and the 97544 zip code are in Josephine 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.

How much does radon mitigation cost in Williams?

Radon mitigation in Williams 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 Williams?

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.

Most Active Radon Markets in Oregon

Cities with the most user-submitted radon test data in the state.

City	Avg User Radon Level	Submissions
Corvallis	5.60 pCi/L	5
Astoria	9.25 pCi/L	4
La Grande	10.67 pCi/L	3
Bend	3.33 pCi/L	3
Salem	9.00 pCi/L	2
Eugene	7.00 pCi/L	2
Medford	7.00 pCi/L	1
Dundee	6.00 pCi/L	1
Ashland	4.00 pCi/L	1
Portland	4.00 pCi/L	1
Lincoln City	No submissions	0
West Linn	No submissions	0