EPA Air · by state
Air-emissions sources in California
- 2,144Facilities
By emissions classification in California
High-priority violations in California
238 sources in California carry a current high-priority Clean Air Act violation.
Counties in California
- Alameda County 87
- Amador County 5
- Butte County 7
- Colusa County 7
- Contra Costa County 81
- El Dorado County 8
- Fresno County 55
- Glenn County 4
- Humboldt County 9
- Imperial County 41
- Kern County 164
- Kings County 23
- Lassen County 3
- Los Angeles County 390
- Madera County 22
- Marin County 5
- Mendocino County 3
- Merced County 23
- Modoc County 4
- Monterey County 14
- Napa County 5
- Orange County 110
- Placer County 42
- Riverside County 65
- Sacramento County 97
- San Bernardino County 123
- San Diego County 126
- San Francisco County 36
- San Joaquin County 74
- San Luis Obispo County 16
- San Mateo County 34
- Santa Barbara County 136
- Santa Clara County 51
- Santa Cruz County 5
- Shasta County 22
- Solano County 31
- Sonoma County 23
- Stanislaus County 40
- Sutter County 8
- Tehama County 11
- Tulare County 19
- Tuolumne County 4
- Undetermined County 32
- Ventura County 41
- Yolo County 16
- Yuba County 8
Industries in California
Sources are grouped by the first industry code on the facility record.
- NAICS 9999 343
- Oil and gas extraction (NAICS 2111) 216
- Utilities (NAICS 2211) 209
- Waste management and remediation (NAICS 5622) 75
- Petroleum and coal products manufacturing (NAICS 3241) 63
- Repair and maintenance (NAICS 8111) 52
- Fabricated metal product manufacturing (NAICS 3328) 45
- Merchant wholesalers, nondurable goods (NAICS 4247) 39
- Utilities (NAICS 2213) 39
- Hospitals (NAICS 6221) 35
- Plastics and rubber products manufacturing (NAICS 3261) 35
- Beverage and tobacco manufacturing (NAICS 3121) 32
- Printing and related support (NAICS 3231) 29
- Miscellaneous manufacturing (NAICS 3399) 28
- Paper manufacturing (NAICS 3222) 26
- Transportation equipment manufacturing (NAICS 3364) 24
- Food manufacturing (NAICS 3114) 23
- Waste management and remediation (NAICS 5629) 23
- Pipeline transportation (NAICS 4861) 22
- Pipeline transportation (NAICS 4862) 21
- Food manufacturing (NAICS 3118) 21
- National security and international affairs (NAICS 9281) 21
- Mining and quarrying (NAICS 2123) 21
- Wood product manufacturing (NAICS 3219) 19
- Nonmetallic mineral product manufacturing (NAICS 3273) 18
- Fabricated metal product manufacturing (NAICS 3324) 18
- Specialty trade contractors (NAICS 2389) 17
- Educational services (NAICS 6113) 16
- Chemical manufacturing (NAICS 3251) 15
- Furniture and related product manufacturing (NAICS 3372) 15
- Chemical manufacturing (NAICS 3255) 14
- Computer and electronic product manufacturing (NAICS 3344) 13
- Food manufacturing (NAICS 3119) 13
- Chemical manufacturing (NAICS 3252) 13
- Justice, public order and safety (NAICS 9221) 13
- Chemical manufacturing (NAICS 3254) 12
- Transportation equipment manufacturing (NAICS 3366) 12
- Primary metal manufacturing (NAICS 3315) 12
- Primary metal manufacturing (NAICS 3313) 11
- Agriculture and forestry support (NAICS 1151) 11
- Warehousing and storage (NAICS 4931) 11
- Furniture and related product manufacturing (NAICS 3371) 11
- Fishing, hunting and trapping (NAICS 1141) 11
- Nonmetallic mineral product manufacturing (NAICS 3272) 10
- Food manufacturing (NAICS 3115) 10
- Fabricated metal product manufacturing (NAICS 3323) 10
- Pipeline transportation (NAICS 4869) 10
- Miscellaneous manufacturing (NAICS 3391) 10
- NAICS 4543 10
- Motor vehicle and parts dealers (NAICS 4411) 10
- Personal and laundry services (NAICS 8123) 9
- Nonmetallic mineral product manufacturing (NAICS 3271) 9
- Space research and technology (NAICS 9271) 9
- Fabricated metal product manufacturing (NAICS 3321) 9
- Building construction (NAICS 2361) 8
- Building construction (NAICS 2362) 8
- Electrical equipment and appliance manufacturing (NAICS 3359) 8
- Chemical manufacturing (NAICS 3253) 8
- Transportation equipment manufacturing (NAICS 3362) 8
- Machinery manufacturing (NAICS 3333) 7
- Fabricated metal product manufacturing (NAICS 3327) 7
- Computer and electronic product manufacturing (NAICS 3345) 7
- Machinery manufacturing (NAICS 3339) 7
- Nonmetallic mineral product manufacturing (NAICS 3279) 7
- Executive and legislative government (NAICS 9211) 6
- Chemical manufacturing (NAICS 3259) 6
- Fabricated metal product manufacturing (NAICS 3329) 6
- Machinery manufacturing (NAICS 3335) 6
- NAICS 4521 6
- Nonmetallic mineral product manufacturing (NAICS 3274) 6
- Plastics and rubber products manufacturing (NAICS 3262) 6
- Administration of environmental programs (NAICS 9241) 6
- Textile mills (NAICS 3133) 5
- Crop production (NAICS 1113) 5
- Food manufacturing (NAICS 3112) 5
- Waste management and remediation (NAICS 5621) 5
- Support activities for transportation (NAICS 4881) 5
- Electrical equipment and appliance manufacturing (NAICS 3353) 5
- Crop production (NAICS 1112) 4
- Mining and quarrying (NAICS 2122) 4
Air inspections in California, by year
A compliance evaluation is the on-site or file review a state, local or federal air agency records against a permitted source.
- 2026 1,920
- 2025 2,487
- 2024 2,773
- 2023 2,852
- 2022 2,071
- 2021 2,109
- 2020 2,180
- 2019 2,688
- 2018 1,888
- 2017 2,222
Facilities
| Facility↑↓ | Classification↑↓ | HPV |
|---|---|---|
| NEWPORT HARBOR SHIPYARD | Minor source | No |
| NEWPORT LAMINATES | Major source | No |
| NEXGEN PHARMA INC | Major source | No |
| NEXT SEAFOOD | Minor source | No |
| NISSAN AUTO RECYCLING | Minor source | No |
| NISSAN OF NATIONAL CITY | Minor source | No |
| NO. CA CONF 7TH DAY ADVENTIST | Minor source | No |
| NOR CAL AUTO WRECKING | Minor source | No |
| NORTH BAY MOTORSPORTS | Minor source | No |
| NORTH COUNTY SANITARY LANDFILL | Major source | No |
| NORTH IMPERIAL ASSOCIATES, LLP | Minor source | No |
| NORTH ORANGE CO COMMUNITY COLLEGE | No | |
| NORTH STATE GROCERY | Minor source | No |
| NORTHERN AGGREGATES-WILLITS | Major source | No |
| NORTHERN CALIFORNIA POWER | Major source | No |
| NORTHERN CALIFORNIA POWER AGENCY | Synthetic minor source | No |
| NORTHROP GRUMMAN CORP | Major source | No |
| NORTHROP GRUMMAN CORP | Synthetic minor source | Yes |
| NORTHROP GRUMMAN SYSTEMS CORP | Major source | No |
| NORTHRUP GRUMMAN SYSTEMS | Major source | No |
| NORTHRUP GRUMMAN SYSTEMS CORPORATION | Major source | No |
| NORTHWEST PIPE & CASING__(NWP) | Synthetic minor source | No |
| NRG DELTA (FORMERLY PG&E GATEWAY, MIRANT DELTA) | Major source | No |
| NTT GLOBAL DATA CENTERS | Major source | No |
| NU-WAY LIVE OAK LANDFILL INC IRWINDALE | Major source | No |
| NUPLA CORPORATION LLC | Major source | No |
| NUSTAR LOGISTICS, L P | Major source | Yes |
| NUSTAR TERMINALS OPS PARTNERSHIP LP | Major source | No |
| O'NEILL BEVERAGES CO LLC | Major source | No |
| OAK RIDGE WINERY LLC | Major source | No |
| OAKLAND ICE CENTER | Minor source | No |
| OAKLAND INTERNATIONAL AIRPORT | Minor source | No |
| OC WASTE & RECYCLING, COYOTE | Major source | No |
| OC WASTE & RECYCLING, FRB | Major source | No |
| OC WASTE & RECYCLING, OLINDA ALPHA | Major source | No |
| OC WASTE & RECYCLING, PRIMA DESHECHA | Major source | No |
| OC WASTE & RECYCLING, SANTIAGO | Major source | No |
| OGISO ENVIRONMENTAL | Minor source | Yes |
| OJAI VALLEY INN & SPA | Minor source | No |
| OLAM WEST COAST INC | Major source | No |
| OLD COUNTRY MILLWORK INC | Major source | No |
| OLDCASTLE INFRASTRUCTURE | Major source | No |
| OLS ENERGY CHINO | Major source | No |
| OLS ENERGY- AGNEWS | Synthetic minor source | No |
| OLYMPUS TERMINALS LLC | Major source | No |
| OMYA CALIFORNIA | Synthetic minor source | No |
| ONIZUKA AIR FORCE BASE | Synthetic minor source | No |
| OPTICAL COMPONENTS | Minor source | No |
| ORANGE COUNTY SANITATION DISTRICT | Major source | No |
| ORANGE COUNTY SANITATION DISTRICT | Major source | No |
| ORANGE GROVE ENERGY CENTER | Major source | No |
| ORCON CORPORATION | Major source | No |
| ORMAT / NORTH BRAWLEY | Synthetic minor source | No |
| ORMAT NEVADA - HEBER | Major source | No |
| ORMAT NEVADA-HOLTVILLE | Major source | No |
| ORMOND BEACH GENERATING STATION | Major source | No |
| OROVILLE HOSPITAL | Minor source | No |
| OROVILLE WYANDOTTE IRRIGATION DISTRICT | Minor source | No |
| OTAY LANDFILL GAS LLC (COVANTA) | Major source | No |
| OTAY MESA ENERGY CENTER | Major source | No |
| OWENS BROCKWAY GLASS | Major source | No |
| OWENS BROCKWAY GLASS CONTAINER INC | Minor source | No |
| OWENS CORNING INSULATING SYSTEMS, LLC | Major source | Yes |
| OWENS CORNING ROOFING & ASPHALT, LLC | Major source | No |
| OWENS-BROCKWAY GLASS CONTAINER | Major source | Yes |
| OWENS-BROCKWAY GLASS CONTAINER INC | Major source | No |
| PABCO BUILDING PRODUCTS LLC, PABCO PAPER | Major source | No |
| PACIFIC AEROSPACE SERVICES, INC | Minor source | No |
| PACIFIC AMERICAN FISHING CO (PAFCO) | Minor source | No |
| PACIFIC BELL DBA AT&T CA | Synthetic minor source | No |
| PACIFIC BELL TELEPHONE CO (DBA AT&T CA) | Synthetic minor source | No |
| PACIFIC CLAY PRODUCTS INC | Major source | No |
| PACIFIC COAST MFG CO | Minor source | No |
| PACIFIC CONTINENTAL TEXTILES INC | Minor source | Yes |
| PACIFIC CUSTOM MATERIALS INC | Minor source | No |
| PACIFIC ETHANOL MADERA LLC | Major source | No |
| PACIFIC ETHANOL STOCKTON | Major source | Yes |
| PACIFIC ETHANOL, INC. | Minor source | No |
| PACIFIC LA MARINE TERMINAL LLC | Major source | No |
| PACIFIC MDF PRODUCTS | Synthetic minor source | No |
| PACIFIC MFG MGMT DBA GRENEKER SOLUTIONS | Major source | No |
| PACIFIC OPERATORS-CARPINTERIA-HOUCHIN | Major source | Yes |
| PACIFIC OPERATORS-CARPINTERIA/PLT.HOGAN | Major source | Yes |
| PACIFIC PIPELINE SYSTEM LLC | Synthetic minor source | Yes |
| PACIFIC PIPELINE SYSTEM, LLC | Major source | No |
| PACIFIC PIPELINE SYSTEM, LLC | Synthetic minor source | Yes |
| PACIFIC PIPELINE SYSTEM, LLC | Major source | Yes |
| PACIFIC PROCESS SYSTEMS | Major source | Yes |
| PACIFIC RECOVERY CORPORATION | Major source | No |
| PACIFIC SOUTHWEST CONTAINER, LLC | Major source | No |
| PACIFIC SOUTHWEST CONTAINERS | Major source | Yes |
| PACIFIC STEEL CASTING CO-PLANT #2 | Synthetic minor source | No |
| PACIFIC STEEL CASTING CO-PLANT #3 | Synthetic minor source | No |
| PACIFIC WEST LITHO INC | Minor source | No |
| PACIFIC-ULTRAPOWER | Major source | No |
| PACTIV | Major source | No |
| PACTIV LLC | Major source | No |
| PACTIVE PACKAGING INC | Synthetic minor source | No |
| PALACE PLATING | Minor source | No |
| PALOMAR TRANSIT MIX | Minor source | No |
Figures from EPA’s ICIS-AIR download.