EPA Air · by state
Air-emissions sources in Pennsylvania
- 8,754Facilities
By emissions classification in Pennsylvania
High-priority violations in Pennsylvania
370 sources in Pennsylvania carry a current high-priority Clean Air Act violation.
Counties in Pennsylvania
- Adams County 63
- Allegheny County 1,374
- Armstrong County 79
- Beaver County 95
- Bedford County 37
- Berks County 216
- Blair County 105
- Bradford County 138
- Bucks County 417
- Butler County 187
- Cambria County 106
- Cameron County 15
- Carbon County 30
- Centre County 84
- Chester County 235
- Clarion County 41
- Clearfield County 99
- Clinton County 46
- Columbia County 56
- Crawford County 61
- Cumberland County 145
- Dauphin County 155
- Delaware County 253
- Elk County 61
- Erie County 137
- Fayette County 73
- Forest County 21
- Franklin County 94
- Fulton County 12
- Greene County 131
- Huntingdon County 21
- Indiana County 103
- Jefferson County 64
- Juniata County 15
- Lackawanna County 118
- Lancaster County 251
- Lawrence County 85
- Lebanon County 94
- Lehigh County 149
- Luzerne County 217
- Lycoming County 168
- McKean County 70
- Mercer County 108
- Mifflin County 21
- Monroe County 45
- Montgomery County 474
- Montour County 17
- Northampton County 154
- Northumberland County 107
- Perry County 22
- Philadelphia County 461
- Pike County 13
- Potter County 35
- Schuylkill County 99
- Snyder County 47
- Somerset County 63
- Sullivan County 12
- Susquehanna County 206
- Tioga County 75
- Undetermined County 91
- Union County 38
- Venango County 45
- Warren County 46
- Washington County 223
- Wayne County 27
- Westmoreland County 158
- Wyoming County 47
- York County 199
Industries in Pennsylvania
Sources are grouped by the first industry code on the facility record.
- Repair and maintenance (NAICS 8111) 1,008
- Personal and laundry services (NAICS 8123) 957
- Oil and gas extraction (NAICS 2111) 821
- Motor vehicle and parts dealers (NAICS 4411) 375
- Educational services (NAICS 6111) 338
- Gasoline stations (NAICS 4471) 328
- Mining and quarrying (NAICS 2123) 284
- Personal and laundry services (NAICS 8122) 259
- Mining support (NAICS 2131) 225
- Petroleum and coal products manufacturing (NAICS 3241) 159
- Hospitals (NAICS 6221) 151
- Fabricated metal product manufacturing (NAICS 3328) 122
- Pipeline transportation (NAICS 4862) 120
- Utilities (NAICS 2211) 117
- Plastics and rubber products manufacturing (NAICS 3261) 110
- Merchant wholesalers, durable goods (NAICS 4231) 102
- Fabricated metal product manufacturing (NAICS 3323) 86
- Printing and related support (NAICS 3231) 84
- Primary metal manufacturing (NAICS 3315) 81
- Wood product manufacturing (NAICS 3219) 81
- Merchant wholesalers, nondurable goods (NAICS 4247) 81
- Real estate (NAICS 5311) 78
- Paper manufacturing (NAICS 3222) 74
- Waste management and remediation (NAICS 5622) 74
- Nonmetallic mineral product manufacturing (NAICS 3273) 72
- Nonmetallic mineral product manufacturing (NAICS 3279) 61
- Furniture and related product manufacturing (NAICS 3371) 60
- Utilities (NAICS 2213) 60
- Fabricated metal product manufacturing (NAICS 3329) 58
- Chemical manufacturing (NAICS 3251) 54
- Educational services (NAICS 6113) 52
- Merchant wholesalers, durable goods (NAICS 4239) 51
- Primary metal manufacturing (NAICS 3311) 50
- Miscellaneous manufacturing (NAICS 3399) 44
- Mining and quarrying (NAICS 2121) 43
- Food manufacturing (NAICS 3111) 40
- Justice, public order and safety (NAICS 9221) 40
- Chemical manufacturing (NAICS 3259) 39
- Fabricated metal product manufacturing (NAICS 3321) 39
- Food manufacturing (NAICS 3119) 37
- Primary metal manufacturing (NAICS 3312) 36
- Religious, grantmaking and similar organizations (NAICS 8131) 35
- Machinery manufacturing (NAICS 3339) 35
- Wood product manufacturing (NAICS 3211) 35
- Nonmetallic mineral product manufacturing (NAICS 3271) 33
- Specialty trade contractors (NAICS 2389) 32
- Fabricated metal product manufacturing (NAICS 3324) 32
- Machinery manufacturing (NAICS 3335) 31
- Rental and leasing services (NAICS 5321) 31
- Pipeline transportation (NAICS 4869) 31
- Transit and ground passenger transportation (NAICS 4851) 30
- Primary metal manufacturing (NAICS 3314) 30
- Chemical manufacturing (NAICS 3255) 29
- Utilities (NAICS 2212) 29
- Transportation equipment manufacturing (NAICS 3362) 29
- Motor vehicle and parts dealers (NAICS 4413) 28
- Professional, scientific and technical services (NAICS 5419) 27
- Chemical manufacturing (NAICS 3252) 27
- Nonmetallic mineral product manufacturing (NAICS 3272) 26
- Food manufacturing (NAICS 3118) 25
- Electrical equipment and appliance manufacturing (NAICS 3359) 25
- Chemical manufacturing (NAICS 3254) 25
- Plastics and rubber products manufacturing (NAICS 3262) 24
- Fabricated metal product manufacturing (NAICS 3327) 23
- Beverage and tobacco manufacturing (NAICS 3121) 23
- Fabricated metal product manufacturing (NAICS 3326) 22
- Primary metal manufacturing (NAICS 3313) 22
- Electrical equipment and appliance manufacturing (NAICS 3353) 22
- Machinery manufacturing (NAICS 3331) 21
- Furniture and related product manufacturing (NAICS 3372) 21
- Telecommunications (NAICS 5171) 20
- Computer and electronic product manufacturing (NAICS 3344) 20
- Professional, scientific and technical services (NAICS 5417) 19
- Motor vehicle and parts dealers (NAICS 4412) 19
- Computer and electronic product manufacturing (NAICS 3345) 19
- Warehousing and storage (NAICS 4931) 19
- Food manufacturing (NAICS 3112) 18
- Truck transportation (NAICS 4841) 18
- Merchant wholesalers, nondurable goods (NAICS 4246) 17
- Professional, scientific and technical services (NAICS 5414) 17
- Publishing industries (NAICS 5111) 17
- Merchant wholesalers, durable goods (NAICS 4235) 17
- Waste management and remediation (NAICS 5629) 16
- Nursing and residential care facilities (NAICS 6231) 16
- Food manufacturing (NAICS 3114) 16
- Building construction (NAICS 2362) 15
- Merchant wholesalers, durable goods (NAICS 4238) 15
- Merchant wholesalers, durable goods (NAICS 4233) 15
- Machinery manufacturing (NAICS 3334) 15
- Data processing and hosting (NAICS 5182) 15
- Miscellaneous manufacturing (NAICS 3391) 15
- Paper manufacturing (NAICS 3221) 15
- Food manufacturing (NAICS 3113) 14
- Crop production (NAICS 1114) 14
- National security and international affairs (NAICS 9281) 13
- Professional, scientific and technical services (NAICS 5413) 13
- Food manufacturing (NAICS 3115) 13
- Merchant wholesalers, nondurable goods (NAICS 4244) 13
- Real estate (NAICS 5313) 13
- Machinery manufacturing (NAICS 3332) 13
- Food manufacturing (NAICS 3116) 13
- Textile mills (NAICS 3133) 12
- Transportation equipment manufacturing (NAICS 3363) 12
- Wood product manufacturing (NAICS 3212) 12
- Fabricated metal product manufacturing (NAICS 3322) 11
- Machinery manufacturing (NAICS 3333) 11
- Executive and legislative government (NAICS 9211) 11
- Air transportation (NAICS 4811) 11
- Nonmetallic mineral product manufacturing (NAICS 3274) 11
- Chemical manufacturing (NAICS 3256) 11
- Support activities for transportation (NAICS 4882) 10
- Support activities for transportation (NAICS 4884) 9
- Textile mills (NAICS 3132) 9
- Repair and maintenance (NAICS 8113) 9
- Specialty trade contractors (NAICS 2382) 9
- Support activities for transportation (NAICS 4883) 9
- Hospitals (NAICS 6222) 9
- Machinery manufacturing (NAICS 3336) 9
- Educational services (NAICS 6112) 8
- Hospitals (NAICS 6223) 8
- Transportation equipment manufacturing (NAICS 3364) 8
- Scenic and sightseeing transportation (NAICS 4871) 8
- Transportation equipment manufacturing (NAICS 3361) 8
- Transportation equipment manufacturing (NAICS 3365) 8
- NAICS 4521 7
- Administration of environmental programs (NAICS 9241) 7
- Building construction (NAICS 2361) 7
- Waste management and remediation (NAICS 5621) 7
- Educational services (NAICS 6115) 6
- Administrative and support services (NAICS 5617) 6
- Accommodation (NAICS 7211) 6
- Telecommunications (NAICS 5179) 5
- Electrical equipment and appliance manufacturing (NAICS 3351) 5
- Administration of housing and community development (NAICS 9251) 5
- Transportation equipment manufacturing (NAICS 3366) 5
- Administrative and support services (NAICS 5619) 5
- Computer and electronic product manufacturing (NAICS 3342) 5
- Merchant wholesalers, nondurable goods (NAICS 4249) 5
- Performing arts and spectator sports (NAICS 7112) 4
- Credit intermediation (NAICS 5223) 4
- Beverage and tobacco manufacturing (NAICS 3122) 4
- Chemical manufacturing (NAICS 3253) 4
- Transportation equipment manufacturing (NAICS 3369) 4
- Professional, scientific and technical services (NAICS 5415) 4
- Private households (NAICS 8141) 4
- Credit intermediation (NAICS 5221) 4
- Administrative and support services (NAICS 5614) 4
- Heavy and civil engineering construction (NAICS 2371) 4
- Truck transportation (NAICS 4842) 3
- Support activities for transportation (NAICS 4881) 3
- Transit and ground passenger transportation (NAICS 4859) 3
- Building material and garden supply stores (NAICS 4442) 3
- NAICS 4529 3
- Nursing and residential care facilities (NAICS 6232) 3
- Leather and allied product manufacturing (NAICS 3161) 3
- Telecommunications (NAICS 5172) 3
- Religious, grantmaking and similar organizations (NAICS 8133) 3
- Broadcasting (NAICS 5151) 3
- Securities and investments (NAICS 5239) 3
- Specialty trade contractors (NAICS 2381) 3
- Water transportation (NAICS 4832) 3
- Mining and quarrying (NAICS 2122) 3
- Nursing and residential care facilities (NAICS 6233) 3
- NAICS 4543 3
- Administration of economic programs (NAICS 9261) 3
- Management of companies (NAICS 5511) 3
- NAICS 5133 3
- Merchant wholesalers, nondurable goods (NAICS 4245) 3
- Personal and laundry services (NAICS 8129) 3
Air-emissions inspections in Pennsylvania, 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 5,287
- 2025 7,277
- 2024 7,215
- 2023 6,551
- 2022 6,724
- 2021 6,954
- 2020 6,491
- 2019 6,635
- 2018 6,336
- 2017 6,410
High-priority air violations in Pennsylvania, by year
A high-priority violation is the most serious class of Clean Air Act non-compliance an agency records against a source; a federally reportable violation is the next step down in severity.
Air-emissions stack tests in Pennsylvania, by year
A stack test measures what a source actually emits, at the stack, against the limit in its permit.
Facilities
| Facility↑↓ | Classification↑↓ | HPV |
|---|---|---|
| TUSCARORA SCH DIST/JAMES BUCHANAN MIDDLE | Minor source | No |
| TWENTIER WELL PAD | Minor source | No |
| TWIN FALLS RESOURCES LLC/FALLS TWP | Minor source | No |
| TWO BROTHERS AUTO SERVICE | Minor source | No |
| TYCO ELECTRONICS COR/CARLISLE PLANT BLDG | Minor source | No |
| TYGART STEEL | Minor source | No |
| TYK AMER/LARGE | Minor source | No |
| TYPECRAFT PRESS INC. | Minor source | No |
| TYPECRAFT PRESS INCORPORATED | Minor source | No |
| TYSON POULTRY INC/NEW HOLLAND COMPLEX | Synthetic minor source | No |
| U-HAUL | Minor source | No |
| U.S. ARMY CORP OF ENGINEERS | Minor source | No |
| U.S. DEPARTMENT OF THE ARMY | Minor source | No |
| UE-02102PA LLC/FED EX ALLENTOWN | Minor source | No |
| UGI AUBURN GATHERING LLC/ MANNING COMPRESSOR LNG STA | Minor source | No |
| UGI AUBURN GATHERING LLC/ANDERSON COMP STA | Synthetic minor source | No |
| UGI AUBURN GATHERING LLC/AUBURN COMP STA | Synthetic minor source | No |
| UGI AUBURN GATHERING LLC/NORTHMORELAND COMP STA | Synthetic minor source | No |
| UGI BETHLEHEM LNG LLC/BETHLEHEM LNG | Minor source | No |
| UGI CARLISLE LNG LLC/CARLISLE | Minor source | No |
| UGI ENERGY SVC INC/ RADNOR | Minor source | No |
| UGI GIBRALTAR GATHERING LLC/GIBRALTAR COMP STA | Synthetic minor source | No |
| UGI LNG INC/TEMPLE | Minor source | No |
| UGI MORAINE EAST GATHERING LLC/RENICK COMP STA | Minor source | No |
| UGI PONDEROSA LLC/STURGIS PAD B COMP STA | Synthetic minor source | No |
| UGI STORAGE CO/PALMER COMP STA | Minor source | No |
| UGI TEXAS CREEK LLC/CASTLE COMP STA | Synthetic minor source | No |
| UGI TEXAS CREEK LLC/CLEGG COMP STA | Synthetic minor source | No |
| UGI TEXAS CREEK LLC/GROFF COMP STA | Minor source | No |
| UGI TEXAS CREEK LLC/JACKSON COMP STA | Synthetic minor source | No |
| UGI TEXAS CREEK LLC/LOVELL COMP STA | Synthetic minor source | No |
| UGI TEXAS CREEK LLC/MARSHLAND 815 COMP STA | Synthetic minor source | No |
| UGI TEXAS CREEK LLC/PIERSON 810 COMP STA | Synthetic minor source | No |
| UGI TEXAS CREEK LLC/THOMAS 808 FAC | Synthetic minor source | No |
| UGI TEXAS CREEK LLC/TRIMBLE COMP STA | Synthetic minor source | No |
| UGI TEXAS CREEK LLC/YAGGIE COMP STA | Synthetic minor source | No |
| ULRICH'S AUTO SALES | Minor source | No |
| ULTIMATE CLNR/ ABINGTON | Minor source | No |
| ULTRA CLEANERS | Minor source | No |
| ULTRA POLY CORP/PORTLAND | Minor source | No |
| ULYSSES LUMBER CO INC/ULYSSES PLT | Minor source | No |
| UMCO ENERGY INC/NEW CENTURY MINE | Minor source | No |
| UNGERER & CO/BETHLEHEM PLT | Minor source | No |
| UNI MART #04618 | Minor source | No |
| UNI-SERVE INC. | Minor source | No |
| UNICAST CO/BOYERTOWN | Synthetic minor source | No |
| UNIFIRST CORP/BRISTOL TWP | Minor source | No |
| UNIFIRST CORP/NEW KENSINGTON | Synthetic minor source | No |
| UNIMART #04626 | Minor source | No |
| UNION CLEANERS/MONESSEN | Minor source | No |
| UNION ELEC STEEL COR/ERIE | Minor source | No |
| UNION ELEC STEEL CORP/CARNEGIE | Minor source | No |
| UNION ELEC STEEL CORP/GREENGARDEN AVE | Minor source | No |
| UNION ELEC STEEL CORP/HARMON CREEK | Major source | No |
| UNION QUARRIES INC/BONNY BROOK | Minor source | No |
| UNION TANK CAR/ALTOONA SHOP | Synthetic minor source | No |
| UNIONTOWN HOSP ASSOC/W BERKELY ST | Minor source | Yes |
| UNITED BRASS WORKS INC/KEYSTONE FOUNDRY DIV | Minor source | No |
| UNITED BRONZE OF PITTSBURGH | Minor source | No |
| UNITED CORRSTACK DBA DS SMITH/READING | Minor source | No |
| UNITED ENVELOPE HOLDINGS LLC/MT POCONO | Minor source | No |
| UNITED LAMINATIONS INC/MAYFIELD | Minor source | No |
| UNITED METAL FABRICATORS/JOHNSTOWN | Minor source | No |
| UNITED NATURAL FOODS INC/YORK | Minor source | No |
| UNITED PARCEL SVC INC/PHILA AIR HUB | Major source | No |
| UNITED REFINING CO/SPRINGDALE ASPHALT TE | Minor source | No |
| UNITED REFINING CO/WARREN PLT | Major source | No |
| UNITED ROPEWORKS USA/MONTGOMERYVILLE | Emissions classification unknown | No |
| UNITED SCH DIST/UNITED JR SR HIGH SCH | Minor source | No |
| UNITED STATES POSTAL SERVICE | Minor source | No |
| UNIV AREA JOINT AUTH/SPRING CREEK STP | Minor source | Yes |
| UNIV OF PA/PHILA | Major source | No |
| UNIV OF PGH APPLIED RESEARCH CTR/UPARC | Minor source | No |
| UNIV OF PGH/PGH CAMPUS | Major source | No |
| UNIVAR SOLUTIONS USA INC/EVERSON PLANT | Minor source | No |
| UNIVAR SOLUTIONS USA LLC/MORRISVILLE SIEVERS PL | Synthetic minor source | No |
| UNIVAR SOLUTIONS USA LLC/MORRISVILLE STEEL RD E | Minor source | No |
| UNIVAR USA INC/BUNOLA | Synthetic minor source | No |
| UNIVERSAL CONCRETE PROD CORP/STOWE | Minor source | No |
| UNIVERSAL MFG CORP/ZELIENOPLE | Minor source | No |
| UNIVERSAL SPECIALTIES | Minor source | No |
| UNIVERSAL STAINLESS & ALLOY PROD/BRIDGEV | Major source | Yes |
| UNIVERSAL STAINLESS & ALLOY PROD/PRP DIVISION | Minor source | No |
| UNIVERSAL WELL SVC/PUNXSUTAWNEY | Minor source | No |
| UNIVERSITY OF PITTSBURGH -- COMPUTER CENTER | Minor source | No |
| UNIVERSITY SQUARE 1 APARTMENTS | Minor source | No |
| UNIVERSITY SQUARE 2 APARTMENTS | Minor source | No |
| UPLAND SQUARE CLNR/WEST POTTSGROVE TWP | Minor source | No |
| UPMC ALTOONA/ALTOONA HOSP | Minor source | No |
| UPMC COMM GEN OSTEO HOSP/LONDONDERRY RD | Minor source | No |
| UPMC EAST | Minor source | No |
| UPMC FORBES TOWER | Minor source | No |
| UPMC HAMOT/ERIE | Minor source | No |
| UPMC HARRISBURG/HARRISBURG HOSP | Minor source | No |
| UPMC JAMESON/N CAMPUS | Minor source | Yes |
| UPMC MAGEE HOSP/MED SVC FOR WOMEN | Minor source | No |
| UPMC MCKEESPORT/HOSPITAL | Minor source | No |
| UPMC MERCY HOSPITAL | Minor source | No |
| UPMC MONTEFIORE HOSPITAL | Minor source | No |
| UPMC MUNCY/MUNCY VALLEY HOSP | Minor source | No |
Figures from EPA’s ICIS-AIR download.