Colfax, ND Radon Levels

Q: What EPA Radon Zone is Colfax in?

Colfax is in Richland County, EPA Zone 1.

Q: How much does radon mitigation cost in Colfax?

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

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

Colfax, ND Radon Facts

EPA Radon Zone Zone 1 — High Risk > 4.0 pCi/L (Zone 1)

County Richland County, ND

Zip Code 58018

Located in Richland County along the Red River valley, Colfax sits on fertile prairie soils over sedimentary bedrock formations characteristic of eastern North Dakota. Radon testing data for the 58018 area is currently limited, making individual property assessment particularly important for residents. The community's mix of older farmstead homes and newer rural construction means radon levels can vary depending on foundation types and construction methods.

Colfax, ND Radon Mitigation

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

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Radon FAQ for Colfax, ND

What EPA Radon Zone is Colfax in?

Colfax and the 58018 zip code are in Richland 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 Colfax?

Radon mitigation in Colfax 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 Colfax?

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 North Dakota

Cities in North Dakota with the most user-submitted radon test data, ranked by number of submissions.

City	Avg User Radon Level	Submissions
Grand Forks	13.50 pCi/L	8
Grafton	7.67 pCi/L	3
Dickinson	6.00 pCi/L	3
Watford City	5.50 pCi/L	2
Bismarck	No submissions	0