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Brownfield sites in California
EPA lists 2,479 brownfield sites in California. Grant recipients report them. Here are the counts, EPA's flags and every county.
EPA flags
| EPA flag | Sites |
|---|---|
| Ready for reuse | 551 |
| Assessment | 1,670 |
| Cleanup | 87 |
| Targeted assessment | 332 |
| State or tribal program | 151 |
| Multipurpose grant | 4 |
| Area-wide planning | 10 |
A site can carry more than one flag. The grant flags show which kinds of EPA brownfield funding a site is listed under.
Counties with 8 or more sites
| County | Sites | Ready for reuse |
|---|---|---|
| Alameda County | 194 | 24 |
| Butte County | 27 | 10 |
| Contra Costa County | 121 | 60 |
| Del Norte County | 30 | 11 |
| Fresno County | 106 | 21 |
| Humboldt County | 136 | 33 |
| Imperial County | 16 | 5 |
| Kern County | 18 | 11 |
| Los Angeles County | 398 | 66 |
| Mendocino County | 9 | 1 |
| Monterey County | 10 | 1 |
| Nevada County | 53 | 23 |
| Orange County | 32 | 5 |
| Riverside County | 122 | 2 |
| Sacramento County | 94 | 27 |
| San Bernardino County | 59 | 0 |
| San Diego County | 331 | 136 |
| San Francisco County | 25 | 4 |
| San Joaquin County | 63 | 23 |
| San Mateo County | 22 | 9 |
| Santa Clara County | 18 | 9 |
| Siskiyou County | 48 | 6 |
| Solano County | 25 | 14 |
| Sonoma County | 63 | 7 |
| Tulare County | 47 | 18 |
| Ventura County | 10 | 2 |
| Yolo County | 335 | 13 |
Counties with fewer than 8 sites
These counties have no page of their own. The number is their site count.
- Amador County (2)
- Armador County (1)
- Ca County (2)
- Colusa County (2)
- Inyo County (5)
- Kings County (1)
- Lake County (3)
- Lassen County (4)
- Los Angelese County (1)
- Madera County (2)
- Mariposa County (1)
- Merced County (5)
- Modoc County (1)
- Napa County (4)
- Placer County (2)
- Plumas County (7)
- San Benito County (2)
- San Luis Obispo County (1)
- Santa Barbara County (3)
- Santa Cruz County (1)
- Shasta County (2)
- Sierra County (2)
- Stanislaus County (1)
- Tehama County (1)
- Trinity County (1)
- Yuba County (1)
9 sites in California have no county in EPA's data.
To see each site in California on a map, use the Cleanups in My Community map, on EPA's site.
What this data holds
- Acreage isn't in EPA's national data, so we don't show site sizes.
- We hold no flood data for these sites.
- We show the city and county, not street addresses.
- Zoning: Check zoning with the city.
- Grant recipients report these sites to EPA. A flag is EPA's record, not a site visit.
Go further with a paid plan
A paid plan runs site reports and area scans on the sites you pick. How much we read varies by state.
Starter: US$39 a month for 100 credits. Run full site reports, area scans and letter drops.
Or create a free account first. No card needed.
US EPA data, as of 18 Oct 2026, reported by grant recipients. Not endorsed by EPA. Not legal or environmental advice; confirm with the state or EPA region.