Horseshoe Bay, TX Radon Mitigation and Testing

Q: What EPA Radon Zone is Horseshoe Bay in?

Horseshoe Bay is in Llano County, EPA Zone 2.

Q: How much does radon mitigation cost in Horseshoe Bay?

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

Llano County

EPA Zone 2

Situated in Llano County within Texas Hill Country, Horseshoe Bay sits on Precambrian granite and gneiss bedrock that can produce variable radon levels throughout the region. This lakeside community features predominantly newer homes with slab-on-grade foundations, though some properties include partial basements or lower-level spaces. With testing data currently limited for ZIP code 78657, residents should consider radon measurement to establish baseline levels for their specific properties.

Horseshoe Bay, TX Radon Mitigation

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

Horseshoe Bay, TX Radon Testing

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

Horseshoe Bay Radon Facts

Key details about the radon risk profile for Horseshoe Bay and the 78657 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Llano County, TX

Zip Code

78657

Predicted Screening Level

2–4 pCi/L (Zone 2)

Horseshoe Bay and the 78657 zip code are located in Llano 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 Horseshoe Bay, TX

What EPA Radon Zone is Horseshoe Bay in?

Horseshoe Bay and the 78657 zip code are in Llano 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 Horseshoe Bay?

Radon mitigation in Horseshoe Bay 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 Horseshoe Bay?

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 Texas

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

City	Avg User Radon Level	Submissions
Lubbock	12.67 pCi/L	9
San Antonio	6.57 pCi/L	7
Austin	6.14 pCi/L	7
Dallas	8.00 pCi/L	5
Abilene	4.50 pCi/L	2
Houston	3.50 pCi/L	2
Plano	6.00 pCi/L	1
Frisco	3.00 pCi/L	1
Nacogdoches	No submissions	0