Mountain View, CA Radon Levels

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

Based on 1 user-submitted tests, the average radon level is 3.00 pCi/L.

Q: What EPA Radon Zone is Mountain View in?

Mountain View is in Santa Clara County, EPA Zone 2.

Q: How much does radon mitigation cost in Mountain View?

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

Check local Mountain View radon levels and find certified testing and mitigation professionals to keep your home safe

Mountain View, CA Radon Facts

EPA Radon Zone Zone 2 — Moderate Risk 2–4 pCi/L (Zone 2)

County Santa Clara County, CA

Zip Code 94040

Avg. User Level 3.00 pCi/L

User Tests 1

Located in Santa Clara County at the heart of Silicon Valley's San Jose Metro area, Mountain View sits on alluvial deposits from San Francisco Bay where radon levels are typically lower than California's mountainous regions. Despite limited testing data for zip codes 94040-94043, the area's dense mix of tech offices, apartments, and single-family homes should still undergo radon assessment. Given the community's high property values and indoor air quality concerns, professional testing provides valuable peace of mind for residents and workers alike.

3.00

pCi/L average

Below EPA Action Level

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

4.0 EPA

10+

Mountain View, CA Radon Mitigation

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

Need Radon Mitigation or Testing in Mountain View?

100% Free, No-Obligation Quotes
Matches You with State-Licensed Santa Clara County Pros

1-800-299-3578 Toll-free · Mon–Fri 8am–6pm ET

Radon FAQ for Mountain View, CA

What is the average radon level in Mountain View, CA?

Based on 1 user-submitted test, the average radon level in Mountain View is 3.00 pCi/L. This is below the EPA's recommended action level of 4.0 pCi/L. However, we recommend all homes be tested regardless of your neighbor's results.

What EPA Radon Zone is Mountain View in?

Mountain View and the 94040 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 Mountain View?

Radon mitigation in Mountain View 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 Mountain View?

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 in California with the most user-submitted radon test data, ranked by number of submissions.

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
Bishop	6.25 pCi/L	4
Oakland	5.00 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
Sacramento	4.33 pCi/L	3