Where we work

Spokane and the Inland Northwest, within about 40 miles of downtown. Each area page has its own radon data, geology and permit notes. Outlying towns are served on scheduled route days with no travel fee.

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Spokane

Spokane hub page →

South Hill / High DriveZone 1 · 10 minBasalt bluffs under a thin silt cap.HillyardZone 1 · 15 minHillyard Trough sand and lake clay.Latah ValleyZone 1 · 15 minHome ground of the Latah Formation clay.

Spokane County

Smaller towns →

SpokaneZone 1 · 10–20 minBasalt, outwash and a long radon history.Spokane ValleyZone 1 · 15 minDeep flood gravel; most tracts test high.Liberty LakeZone 1 · 25 minNewest housing around Spokane, median 2005.CheneyZone 1 · 25–30 minScabland geology and student rentals.Airway HeightsZone 1 · 15–20 minA buried flood channel under the West Plains.Medical LakeZone 1 · 25–30 minOld crystalline rock among three lakes.Deer ParkZone 1 · 30 minRural homes, air and well questions.Mead · Colbert · ChattaroyZone 1 · 20–30 minGranite foothills, flood sand and wells.Nine Mile FallsZone 1 · 25 minRiver canyon homes on wells.

Pend Oreille County

Newport page →

NewportZone 1 · 1 h49.3% of county tests ≥ 4.0; most homes on wells.

North Idaho

Idaho overview →

Coeur d'AleneZone 1 · 35 min52% of tests ≥ 4.0 in ZIP 83815.Post FallsZone 1 · 25 minNew builds with no required pipe.HaydenZone 1 · 40 minRathdrum Prairie outwash.RathdrumZone 1 · 40 min62% of tests ≥ 4.0 in ZIP 83858.

Compare areas

Click a column to sort. Census figures from ACS 2020–2024; population is the 2020 count.

SpokaneSpokaneZone 1228,98958.8%$363,50010–20 min

Spokane ValleySpokaneZone 1102,97658.2%$382,30015 min

South Hill / High DriveSpokaneZone 155,27370.9%$487,50010 min

Coeur d'AleneKootenai, IDZone 154,62859.5%$483,50035 min

HillyardSpokaneZone 151,35760.3%$316,50015 min

Post FallsKootenai, IDZone 138,48564.1%$477,40025 min

Mead · Colbert · ChattaroySpokaneZone 125,24591.7%$493,00020–30 min

Latah ValleySpokaneZone 124,08564.1%$461,00015 min

HaydenKootenai, IDZone 115,57075.0%$494,50040 min

CheneySpokaneZone 113,25534.7%$395,90025–30 min

Liberty LakeSpokaneZone 112,00367.0%$577,50025 min

Airway HeightsSpokaneZone 110,75728.9%$348,50015–20 min

Nine Mile FallsSpokane / StevensZone 19,34794.9%$540,40025 min

RathdrumKootenai, IDZone 19,21177.0%$444,10040 min

Medical LakeSpokaneZone 14,95066.1%$368,70025–30 min

Deer ParkSpokaneZone 14,79170.3%$347,00030 min

NewportPend OreilleZone 12,18160.2%$303,2001 h

Drive times are approximate from our Spokane shop.

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