Topeka, KS Radon Mitigation and Testing

Q: What is the average radon level in Topeka, KS?

Based on 1 user-submitted tests, the average radon level is 6.00 pCi/L.

Q: What EPA Radon Zone is Topeka in?

Topeka is in Shawnee County, EPA Zone 2.

Q: How much does radon mitigation cost in Topeka?

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

Avg: 6.00 pCi/L

Shawnee County

EPA Zone 2

1 user test

The capital city of Kansas in Shawnee County shows radon levels of 6.0 pCi/L, which exceeds the EPA action level of 4.0 pCi/L. Built on limestone formations typical of the Kansas River valley, Topeka's housing stock includes many homes with full basements where radon can accumulate. Residents across multiple zip codes including 66603-66621 should consider radon mitigation systems to reduce exposure levels.

6.00

pCi/L average

Above EPA Action Level

Based on 1 user-submitted radon test for homes in Topeka, KS. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Topeka, KS Radon Mitigation

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

Topeka, KS Radon Testing

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

Topeka, Kansas Radon Levels

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

Radon Level	City	Home Age	Foundation	Submitted
6 pCi/L	Topeka, KS	21-50 Years	Full Basement	Feb 2022

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

Topeka Radon Facts

Key details about the radon risk profile for Topeka and the 66603 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Shawnee County, KS

Zip Code

66603

Predicted Screening Level

2–4 pCi/L (Zone 2)

Avg. User Submitted Level

6.00 pCi/L

User Tests Submitted

Topeka and the 66603 zip code are located in Shawnee 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 Topeka, KS

What is the average radon level in Topeka, KS?

Based on 1 user-submitted test, the average radon level in Topeka is 6.00 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 Topeka in?

Topeka and the 66603 zip code are in Shawnee 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 Topeka?

Radon mitigation in Topeka 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 Topeka?

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 Kansas

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

City	Avg User Radon Level	Submissions
Topeka	6.00 pCi/L	1
Overland Park	No submissions	0