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 |
|---|---|---|
| BANCROFT FOUNTAIN REALTY | Minor source | No |
| BANK OF NEW YORK MELLON FINANCIAL CORP | Synthetic minor source | No |
| BARD VASCULAR SYSTEMS | Minor source | No |
| BARR ASSOCIATES | Minor source | No |
| BARTLETT MIDDLE SCHOOL | Minor source | No |
| BAUSCH & LOMB (FKA POLYMER TECHNOLOGY) | Minor source | No |
| BAUSCH & LOMB (FKA POLYMER TECHNOLOGY) | Minor source | No |
| BAYSTATE GALVANIZING | Minor source | No |
| BEACON INDUSTRIES | Minor source | No |
| BEAVER VISITEC INTERNATIONAL INC | Minor source | No |
| BEDFORD SENIOR HIGH | Minor source | No |
| BELCASTRO FURNITURE RESTORATION | Minor source | No |
| BELMONT HIGH SCHOOL | Minor source | No |
| BEMIS ASSOCIATES INC | Synthetic minor source | No |
| BEMIS SEAM TAPE DIV (AYER ROAD) | Minor source | No |
| BENEVENTO ASPHALT CORPORATION | Synthetic minor source | No |
| BENEVENTO SAND AND STONE | Minor source | No |
| BENTLEY COLLEGE | Minor source | Yes |
| BETHANY HEALTH CARE | Minor source | No |
| BIGELOW CLEANERS | Minor source | No |
| BILLERICA MEMORIAL HIGH SCHOOL | Minor source | No |
| BILLERICA WATER TREATMENT PLANT | Minor source | No |
| BIODEVELOPMENT LABORATORIES INC | Minor source | No |
| BIOGEN INCORPORATED | Synthetic minor source | No |
| BIONOSTICS | Minor source | No |
| BIONTECH US | No | |
| BIOTTI JOSEPH | Minor source | No |
| BIOVERATIVE INC | Synthetic minor source | No |
| BIOVEX | Minor source | Yes |
| BLANK INDUSTRIES LLC | No | |
| BMR 675 WEST KENDALL STREET LLC | Synthetic minor source | No |
| BMR ROGERS STREET LLC | Minor source | No |
| BMR SIDNEY STREET | Minor source | No |
| BNZ MATERIALS INC | Synthetic minor source | No |
| BOC GASSES BOC GROUP | Minor source | No |
| BOOTT COTTON MILLS | Minor source | No |
| BOSE CORPORATION | Minor source | No |
| BOSE CORPORATION | Minor source | No |
| BOSE CORPORATION | Minor source | No |
| BOSTON CENTERLESS INC | No | |
| BOSTON CHILDRENS HOSPITAL AT WALTHAM | Synthetic minor source | No |
| BOSTON COLLEGE CHESTNUT HILL | Major source | No |
| BOSTON COLLEGE LAW SCHOOL | Synthetic minor source | No |
| BOSTON CONCRETE CORP | Synthetic minor source | No |
| BOSTON DYNAMICS | No | |
| BOSTON FINANCIAL DATA SERVICS INC | Synthetic minor source | No |
| BOSTON GAS EVERETT | Minor source | No |
| BOSTON METALLURGICAL CORP | No | |
| BOSTON PROPERTIES LIMITED PARTNERSHIP | Minor source | No |
| BOSTON PROPERTIES LTD PARTNERSHIP | Minor source | No |
| BOSTON RETAIL PRODUCTS | Minor source | No |
| BOSTON SCIENTIFIC CORP | Synthetic minor source | No |
| BOSTONWOOD | Minor source | No |
| BRADFORD INDUSTRIES | Minor source | No |
| BRAMMER BIO MA LLC | Minor source | No |
| BRANDEIS UNIVERSITY | Synthetic minor source | No |
| BRE BMR ASSEMBLY INNOVATION I LLC | No | |
| BREDA TRANSPORTATION INC | Minor source | No |
| BRIGHAM GILL MOTOR CARS INC | Minor source | No |
| BRISTOL-MYERS SQUIBB | No | |
| BRISTOL-MYERS SQUIBB MEDICAL IMAGING | Minor source | No |
| BROAD INSTITUTE | Synthetic minor source | No |
| BROX INDUSTRIES INC | Synthetic minor source | Yes |
| BROX INDUSTRIES INC | Synthetic minor source | No |
| BULLFINCH COMPANIES INC | Minor source | No |
| BURLINGTON HIGH SCHOOL | Minor source | No |
| C & K COMPONENTS | Minor source | No |
| C & W INDUSTRIES | Minor source | No |
| C & W TRANS INC. | Minor source | No |
| CABOT CORPORATION | Minor source | No |
| CAMBODIAN MUTUAL ASSISTANCE ASSOCIATION | Minor source | No |
| CAMBRIDGE BRANDS INC | Synthetic minor source | Yes |
| CAMBRIDGE CENTER DEVELOPMENT | Minor source | No |
| CAMBRIDGE HOSPITAL | Synthetic minor source | No |
| CAMBRIDGE HOUSING AUTHORITY | Minor source | No |
| CAMBRIDGE HOUSING AUTHORITY | Minor source | No |
| CAMBRIDGE HOUSING AUTHORITY | Minor source | No |
| CAMBRIDGE HOUSING AUTHORITY | Minor source | No |
| CAMBRIDGE HOUSING AUTHORITY | Minor source | No |
| CAMBRIDGE HOUSING AUTHORITY | Minor source | No |
| CAMBRIDGE HOUSING AUTHORITY | Minor source | No |
| CAMBRIDGE HOUSING AUTHORITY | Minor source | No |
| CAMBRIDGE HOUSING AUTHORITY | Minor source | No |
| CAMBRIDGE HOUSING AUTHORITY | Minor source | No |
| CAMBRIDGE HOUSING AUTHORITY | Minor source | No |
| CAMBRIDGE HOUSING AUTHORITY | Minor source | No |
| CAMBRIDGE HOUSING AUTHORITY | Minor source | No |
| CAMBRIDGE HOUSING AUTHORITY | Minor source | No |
| CAMBRIDGE HOUSING AUTHORITY | Minor source | No |
| CAMBRIDGE HOUSING AUTHORITY - MILLER RVR | No | |
| CAMBRIDGE ISOTROPE LABORATORIES, INC | Minor source | No |
| CAMBRIDGE MARRIOT | Minor source | No |
| CAMBRIDGE RIDGE & LA | Minor source | No |
| CAMBRIDGE TOWER CORPORATION | Minor source | No |
| CANTON BRONZE ALUMINUM | Minor source | No |
| CARDINAL HEALTH | Minor source | No |
| CASUAL MALE CORPORATION | Minor source | No |
| CASUAL MALE CORPORATION | Minor source | No |
| CAVICCHIO GREENHOUSES INC | Minor source | No |
| CCNNE WALTHAM | Minor source | No |
County as filed on the facility record. Figures from EPA’s ICIS-AIR download.