Toponas, CO Radon Levels

Q: What EPA Radon Zone is Toponas in?

Toponas is in Routt County, EPA Zone 2.

Q: How much does radon mitigation cost in Toponas?

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

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

Toponas, CO Radon Facts

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

County Routt County, CO

Zip Code 80479

High in the Colorado Rockies, Toponas in Routt County sits on granite and metamorphic bedrock formations that can produce significant radon levels. With testing data limited in zip code 80479, homeowners in this mountainous area should prioritize radon testing given Colorado's generally elevated radon potential. Mountain communities often see higher radon concentrations due to geological conditions and elevation.

5.33

pCi/L area average

Above EPA Action Level

Routt County average: 5.33 pCi/L, based on 3 user-submitted tests across 3 cities in the county. No homeowner readings have been submitted for Toponas 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+

Toponas, CO 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 Toponas, CO

No homeowner tests have been submitted for Toponas 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
Kremmling	21.8 mi	20.00 pCi/L	2
Gypsum	28.8 mi	5.00 pCi/L	1
Edwards	35.2 mi	6.75 pCi/L	4
Silverthorne	37.2 mi	10.00 pCi/L	3
Vail	38.2 mi	6.00 pCi/L	1
Steamboat Springs	40.1 mi	6.00 pCi/L	2
Granby	42.8 mi	9.00 pCi/L	4
Glenwood Springs	45.8 mi	8.00 pCi/L	1

Routt County Radon Profile

EPA mapping assigns Routt 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 Routt County average 5.33 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 Routt County home regardless of zone or a neighbor's results.

Radon FAQ for Toponas, CO

What EPA Radon Zone is Toponas in?

Toponas and the 80479 zip code are in Routt 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 Toponas?

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

Radon mitigation in Toponas 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 Toponas?

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.