Three Rivers, CA Radon Mitigation and Testing

Q: What is the average radon level in Three Rivers, CA?

Based on 1 user-submitted tests, the average radon level is 5.00 pCi/L.

Q: What EPA Radon Zone is Three Rivers in?

Three Rivers is in Tulare County, EPA Zone 2.

Q: How much does radon mitigation cost in Three Rivers?

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

Tulare County

EPA Zone 2

1 user test

Three Rivers is located in Tulare County, California. With 1 user-submitted readings averaging 5.00 pCi/L, the area exceeds the EPA's 4.0 pCi/L action threshold, and testing is strongly recommended for homeowners in the 93271 zip code.

5.00

pCi/L average

Above EPA Action Level

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

4.0 EPA

10+

Three Rivers, CA Radon Mitigation

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

Three Rivers, CA Radon Testing

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

Three Rivers, California Radon Levels

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

Radon Level	City	Home Age	Foundation	Submitted
5 pCi/L	Three Rivers, CA	21-50 Years	No Basement/All Slab	Aug 2025

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

Three Rivers Radon Facts

Key details about the radon risk profile for Three Rivers and the 93271 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Tulare County, CA

Zip Code

93271

Predicted Screening Level

2–4 pCi/L (Zone 2)

Avg. User Submitted Level

5.00 pCi/L

User Tests Submitted

Three Rivers and the 93271 zip code are located in Tulare 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 Three Rivers, CA

What is the average radon level in Three Rivers, CA?

Based on 1 user-submitted test, the average radon level in Three Rivers 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 Three Rivers in?

Three Rivers and the 93271 zip code are in Tulare 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 Three Rivers?

Radon mitigation in Three Rivers 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 Three Rivers?

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 California

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

City	Avg User Radon Level	Submissions
Los Angeles	7.83 pCi/L	6
Mammoth Lakes	10.80 pCi/L	5
San Jose	4.20 pCi/L	5
Rancho Palos Verdes	8.00 pCi/L	4
Woodland Hills	7.67 pCi/L	3
South Lake Tahoe	6.33 pCi/L	3
Palos Verdes Peninsula	6.00 pCi/L	3
Bishop	5.67 pCi/L	3
Sacramento	4.33 pCi/L	3
Oakland	3.33 pCi/L	3
Fresno	10.00 pCi/L	2
Davis	8.00 pCi/L	2
Palo Alto	6.50 pCi/L	2
Studio City	6.50 pCi/L	2
Menlo Park	5.00 pCi/L	2
Truckee	5.00 pCi/L	2
Walnut Creek	4.00 pCi/L	2
San Diego	3.50 pCi/L	2
San Francisco	3.50 pCi/L	2
Belmont	20.00 pCi/L	1