Johnson City, TN Radon Mitigation and Testing

Q: What is the average radon level in Johnson City, TN?

Based on 5 user-submitted tests, the average radon level is 4.20 pCi/L.

Q: What EPA Radon Zone is Johnson City in?

Johnson City is in Washington County, EPA Zone 1.

Q: How much does radon mitigation cost in Johnson City?

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

Avg: 4.20 pCi/L

Washington County

EPA Zone 1

5 user tests

Johnson City is located in Washington County, Tennessee. With 5 user-submitted readings averaging 4.20 pCi/L, the area exceeds the EPA's 4.0 pCi/L action threshold, and testing is strongly recommended for homeowners in the 37601 zip code.

4.20

pCi/L average

Above EPA Action Level

Based on 5 user-submitted radon tests for homes in Johnson City, TN. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Johnson City, TN Radon Mitigation

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

Johnson City, TN Radon Testing

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

Johnson City, Tennessee Radon Levels

User-submitted radon test readings from homes in the Johnson City area.

Radon Level	City	Home Age	Foundation	Submitted
4 pCi/L	Johnson City, TN	51-99 Years	Full Basement	Nov 2024
4 pCi/L	Johnson City, TN	0-20 Years	Full Basement	Sep 2018
5 pCi/L	Johnson City, TN	0-20 Years	Full Basement	Apr 2015

Have a radon test result for Johnson City? Submit your reading to help other homeowners.

Johnson City Radon Facts

Key details about the radon risk profile for Johnson City and the 37601 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Washington County, TN

Zip Code

37601

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Avg. User Submitted Level

4.20 pCi/L

User Tests Submitted

Johnson City and the 37601 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 Johnson City, TN

What is the average radon level in Johnson City, TN?

Based on 5 user-submitted tests, the average radon level in Johnson City is 4.20 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 Johnson City in?

Johnson City and the 37601 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 Johnson City?

Radon mitigation in Johnson City 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 Johnson City?

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 Tennessee

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

City	Avg User Radon Level	Submissions
Elizabethton	7.33 pCi/L	3
Cleveland	5.33 pCi/L	3
Johnson City	4.33 pCi/L	3
Maryville	10.50 pCi/L	2
Columbia	8.50 pCi/L	2
Bristol	6.50 pCi/L	2
Chattanooga	5.00 pCi/L	2
Clarksville	20.00 pCi/L	1
Kingsport	5.00 pCi/L	1
Knoxville	4.00 pCi/L	1
Greeneville	No submissions	0
Murfreesboro	No submissions	0