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Williamsburg, NM Radon Levels

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


Williamsburg, NM Radon Facts

EPA Radon Zone Zone 2 — Moderate Risk 2–4 pCi/L (Zone 2)
County Sierra County, NM
Zip Code 87942

Found in Sierra County within New Mexico's Rio Grande valley, Williamsburg sits in EPA Zone 2 where desert basin sediments and nearby volcanic formations create moderate radon potential. Current testing data for this 87942 community is limited, underscoring the importance of individual home testing. The area's high desert geology, combining valley fill with igneous and sedimentary rocks, can produce radon conditions that vary significantly based on specific location and construction characteristics.

Williamsburg, NM 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 Williamsburg, NM

What EPA Radon Zone is Williamsburg in?
Williamsburg and the 87942 zip code are in Sierra 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 Williamsburg?
Radon mitigation in Williamsburg 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 Williamsburg?
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 New Mexico

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

CityAvg User Radon LevelSubmissions
Santa Fe 7.70 pCi/L 10
El Prado 10.40 pCi/L 5
Taos 12.33 pCi/L 3
Albuquerque 5.33 pCi/L 3
Las Cruces 7.00 pCi/L 2
Alamogordo 4.00 pCi/L 1
Clovis No submissions 0