EPA-regulated facilities near Norwalk, CA
There are 12,740 EPA-regulated facilities within 5 miles of Norwalk, California. The most common kinds are hazardous waste (11,731), water discharge (965), air emissions (453). 3 are currently in significant noncompliance, the EPA's designation for the most serious or persistent violations, and 26 have a violation on record. Penalties over the last five years total $13M across 18 sites.
By category
| Category | Facilities |
|---|---|
| Hazardous waste | 11,731 |
| Treatment, storage or disposal | 3 |
| Large quantity generators | 223 |
| Small quantity generators | 1,416 |
| Transporters | 122 |
| Chemical (RMP/TRI) | 237 |
| Superfund | 18 |
| Air emissions | 453 |
| Major sources | 15 |
| Minor sources | 21 |
| Water discharge | 965 |
| Major permits | 1 |
| Minor permits | 837 |
| Drinking water systems | 22 |
| Greenhouse gas reporters | 5 |
| Data centers | 2 |
| Scrap yards | 1 |
| Recycling centers | 2 |
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.
- PARAMOUNT PETROLEUM CORPORATION REFINERY Significant noncompliance · $200k in penalties
- LA CO., RANCHO LOS AMIGOS NAT. REHAB CTR Significant noncompliance
- ROYAL TRUCK BODY INC Significant noncompliance
Largest penalties
Penalties assessed over the last five years.
- UPS LA MIRADA $5.3M in penalties
- UNITED PARCEL SERVICE $5.3M in penalties
- V&H PERFORMANCE LLC DBA VANCE & HINES $900k in penalties
- ABF FREIGHT SYSTEMS INC $535k in penalties
- SUPERIOR GROCERS DISTRIBUTION CENTER $254k in penalties
Superfund sites
- DEFENSE FUEL SUPPORT POINT NORWALK DFSP
- NEVILLE CHEM CO
- SANTA FE SPRINGS DRUMS
- POWERINE REFINERY
- NORWALK DUMP
- LA COUNTY NITROUS OXIDE CYLINDERS
- ORANGE COUNTY CHEMICAL SUPPLY DRUM SITE
- ALONDRA CHEMICALS
- RED PHOSPHOROUS SITE
- NATIONAL AERONAUTICS AND SPACE ADMINISTRATION INDUSTRIAL PLANT (NIP)
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 Norwalk as the Census Bureau records it. The Data page explains where each record comes from and how it can mislead.