Newport, WA Radon Mitigation and Testing

Q: What EPA Radon Zone is Newport in?

Newport is in Pend Oreille County, EPA Zone 1.

Q: How much does radon mitigation cost in Newport?

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

Pend Oreille County

EPA Zone 1

Remote community in Pend Oreille County within the Spokane metropolitan region, Newport sits over crystalline bedrock formations typical of the northern Rocky Mountains that can produce variable radon levels. Testing data for zip code 99156 is currently limited, though the area's geological setting suggests potential for localized radon accumulation. Rural homeowners should prioritize radon testing, particularly given the region's granite-rich geology and the tendency for mountain valley locations to experience seasonal radon variations.

Newport, WA Radon Mitigation

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

Newport, WA Radon Testing

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

Newport Radon Facts

Key details about the radon risk profile for Newport and the 99156 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Pend Oreille County, WA

Zip Code

99156

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Newport and the 99156 zip code are located in Pend Oreille 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 Newport, WA

What EPA Radon Zone is Newport in?

Newport and the 99156 zip code are in Pend Oreille 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 Newport?

Radon mitigation in Newport 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 Newport?

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