Basalt, CO Radon Mitigation and Testing

Q: What EPA Radon Zone is Basalt in?

Basalt is in Eagle County, EPA Zone 2.

Q: How much does radon mitigation cost in Basalt?

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

Eagle County

EPA Zone 2

Located in Eagle County in Colorado's high country, Basalt sits within EPA Zone 2 where moderate radon potential is typical. The area's mountainous geology and elevation contribute to variable radon conditions across zip code 81621's diverse housing stock. With limited testing data available for this resort community, homeowners should conduct radon testing to understand their individual property's risk profile.

Basalt, CO Radon Mitigation

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

Basalt, CO Radon Testing

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

Basalt Radon Facts

Key details about the radon risk profile for Basalt and the 81621 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Eagle County, CO

Zip Code

81621

Predicted Screening Level

2–4 pCi/L (Zone 2)

Basalt and the 81621 zip code are located in Eagle County, which has an EPA assigned Radon Zone of 2. A radon zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Basalt, CO

What EPA Radon Zone is Basalt in?

Basalt and the 81621 zip code are in Eagle 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.

How much does radon mitigation cost in Basalt?

Radon mitigation in Basalt 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 Basalt?

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 Colorado

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

City	Avg User Radon Level	Submissions
Fairplay	12.00 pCi/L	9
Crested Butte	8.56 pCi/L	9
Denver	6.22 pCi/L	9
Montrose	9.25 pCi/L	8
Gunnison	7.38 pCi/L	8
Buena Vista	12.57 pCi/L	7
Pueblo	10.67 pCi/L	6
Grand Junction	8.17 pCi/L	6
Bayfield	6.00 pCi/L	6
Canon City	10.80 pCi/L	5
Aurora	7.40 pCi/L	5
Windsor	7.00 pCi/L	5
Telluride	6.80 pCi/L	5
Parker	5.40 pCi/L	5
Salida	15.50 pCi/L	4
Johnstown	9.50 pCi/L	4
Granby	9.00 pCi/L	4
Longmont	8.00 pCi/L	4
Edwards	6.75 pCi/L	4
Mancos	6.00 pCi/L	4