EPA Air · by county
Air-emissions sources in Middlesex County, Massachusetts
- 932Facilities
Every stationary source in Middlesex County, Massachusetts that holds a Clean Air Act permit or is otherwise tracked by an air agency — planned, under construction, operating, seasonal or temporarily closed. Sources EPA records as permanently closed are not listed.
By emissions classification in Middlesex County
A source’s classification is the size band its potential emissions put it in: a major source is large enough to need a Title V operating permit, a synthetic minor has accepted limits to stay below that line, and a minor source sits below it outright.
Inspections in Middlesex County, 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 — inspections 124
- 2025 — inspections 190
- 2024 — inspections 185
- 2023 — inspections 106
- 2022 — inspections 63
- 2021 — inspections 100
- 2020 — inspections 103
- 2019 — inspections 132
- 2018 — inspections 127
- 2017 — inspections 169
Facilities
| Facility↑↓ | Classification↑↓ | HPV |
|---|---|---|
| SOMERVILLE HIGH SCHOOL | Minor source | No |
| SOMERVILLE HOSPITAL | Minor source | No |
| SP 600 WINTER OWNER LLC | Minor source | No |
| SPAULDING & SLYE COLLIERS INTERNATIONAL | Minor source | No |
| SPAULDING HOSPITAL CAMBRIDGE INC | Minor source | No |
| SPECIALTY FURNITURE | Minor source | No |
| SPECIALTY MATERIALS INCORPORATED | Synthetic minor source | No |
| SPINCRAFT INC | Minor source | No |
| SPLASH PRODUCTS INC | Synthetic minor source | No |
| SPRAGUE-EVERETT TERMINAL | Minor source | No |
| SPRINT WOBURN PCS SWITCH | Minor source | No |
| ST JEANNE DARC SCHOOL | Minor source | No |
| STAFFORD MANUFACTURING CORP | No | |
| STAGE BIO | No | |
| STANDARD THOMSON CORPORATION | Minor source | No |
| STOKE THERAPEUTICS | No | |
| STONEHAM RESEARCH CENTER | Minor source | No |
| STYLETEK INC | Minor source | No |
| SUDZIT LAUNDRY | Minor source | No |
| SULLIVAN BROS PRINTERS INC | Minor source | No |
| SUNGARD AVAILABILITY SERVICESLP | Synthetic minor source | No |
| T F BOYLE TRANSPORTATION INC | No | |
| T&T ANODIZING INC | Synthetic minor source | No |
| TASCO REALTY COMPANY | Minor source | No |
| TDL INC | Minor source | No |
| TECOGEN | Synthetic minor source | No |
| TECOMET | Minor source | No |
| TECOMET INC | Minor source | No |
| TENNESSEE GAS PIPELINE STA 267 | Major source | No |
| TERADYNE INC | Minor source | No |
| TERADYNE INC | Minor source | No |
| TEWKSBURY HOSPITAL | Synthetic minor source | No |
| TEWKSBURY MEMORIAL HIGH SCHOOL | Minor source | No |
| TEXTRON SYSTEMS CORPORATION | Synthetic minor source | No |
| THERMO FISHER SCIENTIFIC | No | |
| THERMO FISHER SCIENTIFIC | Minor source | No |
| THERMO FISHER SCIENTIFIC | Synthetic minor source | No |
| THERMO-FAB | Synthetic minor source | No |
| TILLOTSON RUBBER | Minor source | No |
| TJX COMPANIES INC | Synthetic minor source | No |
| TJX COMPANIES INC THE | Synthetic minor source | No |
| TOBIN MONTESSORI AND VASSAL LANE UPPER SCHOOL | No | |
| TOWERS AT CHESTNUT H | Minor source | No |
| TRIRAM CORPORATION | Minor source | No |
| TUFTS UNIVERSITY | Synthetic minor source | No |
| TUTHILL VACUUM & BLOWER SYSTEM | Minor source | No |
| TWENTY WAYLAND LLC | Minor source | No |
| TYCO ADHESIVES | Minor source | No |
| TYMPANIUM CORPORATION | Minor source | No |
| U S FILTER | Minor source | No |
| ULTRA ELECTRONICS HERLEY | Synthetic minor source | No |
| UMASS EASTERN MASS EXT CENTER | Minor source | No |
| UMASS LOWELL NORTH CAMPUS | Synthetic minor source | No |
| UNIVAR SOLUTIONS USA INC | Synthetic minor source | No |
| UNIVERSAL LAUNDRY | Minor source | No |
| UNIVERSAL WILDE INC | Minor source | No |
| UNIVERSITY CROSSING | Minor source | No |
| US ARMY SOLDIER SYSTEMS CENTER | Synthetic minor source | No |
| US EDITH NOURSE VA HOSPITAL | Synthetic minor source | No |
| US FOOD & DRUG ADMINISTRATION | Minor source | No |
| US TRUST DATA SERVICE CORPORATION | Minor source | No |
| USAF HANSCOM AFB 66 ABG/CEIE | Major source | No |
| USEPA REGION 1 LABORATORY OEME | Minor source | No |
| VALS CLEANERS | Minor source | No |
| VDC I | Synthetic minor source | No |
| VEOLIA ES TECHNICAL SOLUTIONS LLC | Minor source | No |
| VERIZON | Synthetic minor source | No |
| VERIZON LABORATORIES | Minor source | No |
| VERIZON MASSACHUSETTS | Synthetic minor source | No |
| VERIZON MASSACHUSETTS | Synthetic minor source | No |
| VERIZON MASSACHUSETTS | Synthetic minor source | No |
| VERIZON MASSACHUSETTS | Synthetic minor source | No |
| VERIZON MASSACHUSETTS | Minor source | No |
| VERIZON MASSACHUSETTS | Minor source | No |
| VERIZON MASSACHUSETTS | Synthetic minor source | No |
| VERIZON NEW ENGLAND | Synthetic minor source | No |
| VERIZON WIRELESS | Minor source | No |
| VERTEX PHARMACEUTIC | Minor source | No |
| VERTEX PHARMACEUTICALS INC | Minor source | No |
| VHS ACQUISITION SUBSIDARY | Synthetic minor source | No |
| VICINITY ENERGY CAMBRIDGE LLC | Synthetic minor source | No |
| VIKING ONE STOP CLEANERS | Minor source | No |
| VISHAY BLH FKA BLH ELECTRONICS | Minor source | No |
| VISTA CONTROLS | Minor source | No |
| VOXEL8 | Minor source | No |
| VULCAN INDUSTRIES | Minor source | No |
| WA WOOD COMPANY | Minor source | No |
| WAKEFIELD CORPORATION THE | Minor source | No |
| WAKEFIELD HIGH SCHOOL | Minor source | No |
| WAKEFIELD MATERIALS CORP. | Minor source | No |
| WAKEFIELD MUNICIPAL GAS AND LIGHT DEPARTMENT | Minor source | No |
| WALDEN PARK ASSOCIATES | Minor source | No |
| WALSH MIDDLE SCHOOL | Minor source | No |
| WALTER H. PLATT BUILDERS | Minor source | No |
| WALTHAM ENGINEERING | Minor source | No |
| WALTHAM GOVERNMENT CENTER | Minor source | No |
| WARD PROCESS | Minor source | No |
| WARD SCHOOL | Minor source | No |
| WARNER BABCOCK LLC | Minor source | Yes |
| WASHINGTON ELMS APARTMENTS | Minor source | No |
County as filed on the facility record. Figures from EPA’s ICIS-AIR download.