Woodland, WA Radon Mitigation and Testing

Q: What EPA Radon Zone is Woodland in?

Woodland is in Clark County, EPA Zone 1.

Q: How much does radon mitigation cost in Woodland?

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

Clark County

EPA Zone 1

Located in Clark County within the Portland Metro area, Woodland sits where Columbia River valley soils over volcanic bedrock can create variable radon conditions. Testing data remains limited for this community in zip code 98674, making individual home measurements essential for accurate radon assessment. The area's mix of older homes and newer construction may show different radon characteristics depending on foundation design and local geological conditions.

Woodland, WA Radon Mitigation

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

Woodland, WA Radon Testing

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

Woodland Radon Facts

Key details about the radon risk profile for Woodland and the 98674 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Clark County, WA

Zip Code

98674

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Woodland and the 98674 zip code are located in Clark County, which has an EPA assigned Radon Zone of 1. A radon zone of 1 predicts an average indoor radon screening level greater than 4 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Woodland, WA

What EPA Radon Zone is Woodland in?

Woodland and the 98674 zip code are in Clark County, which has an EPA assigned Radon Zone of 1. A zone of 1 predicts an average indoor radon screening level greater than 4 pCi/L.

How much does radon mitigation cost in Woodland?

Radon mitigation in Woodland 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 Woodland?

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 Washington

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

City	Avg User Radon Level	Submissions
Vancouver	6.56 pCi/L	9
Kent	3.60 pCi/L	5
Seattle	5.25 pCi/L	4
Olympia	5.00 pCi/L	4
Bellevue	3.75 pCi/L	4
Spokane	11.67 pCi/L	3
Camas	8.00 pCi/L	3
Centralia	7.00 pCi/L	3
Bellingham	4.50 pCi/L	2
Kirkland	4.50 pCi/L	2
Washougal	8.00 pCi/L	1
Ridgefield	5.00 pCi/L	1
Moses Lake	No submissions	0