EPA-regulated facilities near Norco, CA
There are 3,925 EPA-regulated facilities within 5 miles of Norco, California. The most common kinds are hazardous waste (3,592), water discharge (307), air emissions (173). 2 are currently in significant noncompliance, the EPA's designation for the most serious or persistent violations, and 5 have a violation on record. Penalties over the last five years total $511k across 3 sites.
By category
| Category | Facilities |
|---|---|
| Hazardous waste | 3,592 |
| Large quantity generators | 64 |
| Small quantity generators | 408 |
| Transporters | 39 |
| Chemical (RMP/TRI) | 52 |
| Superfund | 8 |
| Air emissions | 173 |
| Major sources | 10 |
| Minor sources | 6 |
| Water discharge | 307 |
| Major permits | 2 |
| Minor permits | 258 |
| Drinking water systems | 8 |
| Greenhouse gas reporters | 1 |
| Data centers | 3 |
| Recycling centers | 1 |
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.
- CORONA ENERGY PARTNERS Significant noncompliance
- DART CONTAINER CORPORATION OF CALIFORNIA Significant noncompliance
Largest penalties
Penalties assessed over the last five years.
- WESTERN RIVERSIDE CO REG WWTP $294k in penalties
- CORONA WWTP 1 $177k in penalties
- HUNTER CONSULTING INC DBA HCI ENV $40k in penalties
Superfund sites
- NORCO DRUG
- NAVAL WPNS STATION SEAL BEACH DET. CORONA
- WYLE LABS - NORCO FACILITY
- MITCHELL AVENUE DRUG LAB
- 6TH AND CORONA
- ADVANCED FUELS FILTRATION SYSTEMS
- SHERBORN MAGNOLIA DRUM SITE
- MIRA LOMA B17 RADIUM DIALS
Data centers
County
Nearby towns
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. Distances are from the center of Norco as the Census Bureau records it. The Data page explains where each record comes from and how it can mislead.