Campbell, CA Radon Mitigation and Testing

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

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

Q: What EPA Radon Zone is Campbell in?

Campbell is in Santa Clara County, EPA Zone 2.

Q: How much does radon mitigation cost in Campbell?

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

Santa Clara County

EPA Zone 2

1 user test

Nestled in the heart of Silicon Valley within Santa Clara County, Campbell shows an average radon level of 6.0 pCi/L, which exceeds the EPA action threshold of 4.0 pCi/L. Located in zip code 95008 within the San Jose Metro area, the city's predominantly single-family homes built during various decades sit on alluvial soils over fractured bedrock. Residents should consider radon testing and mitigation given this elevated reading.

6.00

pCi/L average

Above EPA Action Level

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

4.0 EPA

10+

Campbell, CA Radon Mitigation

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

Campbell, CA Radon Testing

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

Campbell, California Radon Levels

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

Radon Level	City	Home Age	Foundation	Submitted
6 pCi/L	Campbell, CA	21-50 Years	Full Basement	Dec 2024

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

Campbell Radon Facts

Key details about the radon risk profile for Campbell and the 95008 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Santa Clara County, CA

Zip Code

95008

Predicted Screening Level

2–4 pCi/L (Zone 2)

Avg. User Submitted Level

6.00 pCi/L

User Tests Submitted

Campbell and the 95008 zip code are located in Santa Clara 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 Campbell, CA

What is the average radon level in Campbell, CA?

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

Campbell and the 95008 zip code are in Santa Clara 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 Campbell?

Radon mitigation in Campbell 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 Campbell?

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