Shell Knob, MO Radon Mitigation and Testing

Q: What is the average radon level in Shell Knob, MO?

Based on 2 user-submitted tests, the average radon level is 5.00 pCi/L.

Q: What EPA Radon Zone is Shell Knob in?

Shell Knob is in Barry County, EPA Zone 2.

Q: How much does radon mitigation cost in Shell Knob?

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

Avg: 5.00 pCi/L

Barry County

EPA Zone 2

2 user tests

This Barry County community along Table Rock Lake has recorded an average radon level of 5.0 pCi/L, slightly above the EPA action threshold despite the area's generally moderate radon potential from underlying Mississippian limestone. Located in zip code 65747 within Missouri's Ozark region, Shell Knob's consistent readings suggest homeowners should maintain awareness of radon levels. The area's mix of lakefront properties and traditional Ozark construction presents varied foundation types that can influence indoor radon concentrations.

5.00

pCi/L average

Above EPA Action Level

Based on 2 user-submitted radon tests for homes in Shell Knob, MO. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Shell Knob, MO Radon Mitigation

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

Shell Knob, MO Radon Testing

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

Shell Knob, Missouri Radon Levels

User-submitted radon test readings from homes in the Shell Knob area.

Radon Level	City	Home Age	Foundation	Submitted
5 pCi/L	Shell Knob, MO	21-50 Years	Full Basement	May 2018

Have a radon test result for Shell Knob? Submit your reading to help other homeowners.

Shell Knob Radon Facts

Key details about the radon risk profile for Shell Knob and the 65747 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Barry County, MO

Zip Code

65747

Predicted Screening Level

2–4 pCi/L (Zone 2)

Avg. User Submitted Level

5.00 pCi/L

User Tests Submitted

Shell Knob and the 65747 zip code are located in Barry 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 Shell Knob, MO

What is the average radon level in Shell Knob, MO?

Based on 2 user-submitted tests, the average radon level in Shell Knob is 5.00 pCi/L. This exceeds the EPA's recommended action level of 4.0 pCi/L, and radon testing is recommended for all homes in the area.

What EPA Radon Zone is Shell Knob in?

Shell Knob and the 65747 zip code are in Barry 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 Shell Knob?

Radon mitigation in Shell Knob 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 Shell Knob?

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 Missouri

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

City	Avg User Radon Level	Submissions
Troy	8.50 pCi/L	4
Lees Summit	7.00 pCi/L	3
Columbia	3.00 pCi/L	2
House Springs	7.00 pCi/L	1
Kansas City	7.00 pCi/L	1
Springfield	7.00 pCi/L	1
Independence	5.00 pCi/L	1
Wentzville	No submissions	0