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EPA-regulated facilities in Yolo County, CA

There are 3,955 EPA-regulated facilities inside Yolo County, California. The most common kinds are hazardous waste (3,224), air emissions (706), water discharge (247). 2 are currently in significant noncompliance, the EPA's designation for the most serious or persistent violations, and 18 have a violation on record. Penalties over the last five years total $7.1M across 7 sites.

Open the map of Yolo County

3,955facilities in the county
2in significant noncompliance
18with a violation on record
$7.1Min penalties, last 5 years

By category

CategoryFacilities
Hazardous waste3,224
Large quantity generators64
Small quantity generators342
Transporters29
Chemical (RMP/TRI)47
Superfund7
Air emissions706
Major sources9
Minor sources9
Water discharge247
Major permits3
Minor permits197
Drinking water systems116
Greenhouse gas reporters4
Data centers4
Recycling centers1

A facility enrolled in several programs counts once in the total and once in each of its categories.

In significant noncompliance

The EPA's designation for its most serious or persistent violations, as of the latest data.

Largest penalties

Penalties assessed over the last five years.

Superfund sites

Data centers

Towns in Yolo County

Bordering counties

Reading these numbers

These are regulatory records, not measurements of pollution. Most facilities appear because they hold a permit or file reports, and most of them are compliant; a listing is not a claim that a facility has polluted anything. Compliance status and penalties are the EPA's own determinations in data retrieved Oct 9, 2026. The Data page explains where each record comes from and how it can mislead.