Otis, CO Radon Mitigation and Testing

Q: What EPA Radon Zone is Otis in?

Otis is in Washington County, EPA Zone 1.

Q: How much does radon mitigation cost in Otis?

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

Washington County

EPA Zone 1

Positioned in Washington County on Colorado's eastern plains, Otis sits on sedimentary formations typical of the High Plains region. While radon testing data for zip code 80743 remains limited, the area's EPA Zone 1 classification suggests elevated radon potential. The combination of prairie soils over sedimentary bedrock, along with the region's agricultural character and mix of foundation types, makes individual property testing advisable for homeowners.

Otis, CO Radon Mitigation

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

Otis, CO Radon Testing

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

Otis Radon Facts

Key details about the radon risk profile for Otis and the 80743 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Washington County, CO

Zip Code

80743

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Otis and the 80743 zip code are located in Washington 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 Otis, CO

What EPA Radon Zone is Otis in?

Otis and the 80743 zip code are in Washington 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 Otis?

Radon mitigation in Otis 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 Otis?

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