EPA-regulated facilities in Middlesex County, MA

There are 13,273 EPA-regulated facilities inside Middlesex County, Massachusetts. The most common kinds are hazardous waste (9,401), water discharge (3,356), air emissions (1,604). 58 are currently in significant noncompliance, the EPA's designation for the most serious or persistent violations, and 173 have a violation on record. Penalties over the last five years total $25M across 48 sites.

Open the map of Middlesex County

13,273facilities in the county

58in significant noncompliance

173with a violation on record

$25Min penalties, last 5 years

By category

Category	Facilities
Hazardous waste	9,401
Treatment, storage or disposal	3
Large quantity generators	159
Small quantity generators	4,776
Transporters	6
Chemical (RMP/TRI)	516
Superfund	107
Air emissions	1,604
Major sources	20
Synthetic minor sources	240
Minor sources	697
Water discharge	3,356
Major permits	15
Minor permits	2,609
Drinking water systems	303
Greenhouse gas reporters	19
Data centers	23
Scrap yards	8
Recycling centers	21

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.

AYER TRANSLOAD FACILITY 98 BERKSHIRE BOULEVARD, AYER, MA, 01432 Significant noncompliance · $170k in penalties
NYACOL NANO TECHNOLOGIES 211 MEGUNKO ROAD, ASHLAND, MA, 01721 Significant noncompliance · $80k in penalties
MIT LINCOLN LABORATORY 244 WOOD STREET, LEXINGTON, MA, 02421 Significant noncompliance · $43k in penalties
MURPHY WASTE OIL SERVICE 252 SALEM ST, WOBURN, MA, 01801 Significant noncompliance · $34k in penalties
CIRTEC MEDICAL 1001 PAWTUCKET BLVD, LOWELL, MA, 01854 Significant noncompliance · $24k in penalties
ONTO INNOVATION INC WILMINGTON JONSPIN 16 JONSPIN RD, WILMINGTON, MA, 01887 Significant noncompliance · $9k in penalties
BEACON WATERPROOFING NEW HQ 149 CROSS ST, WINCHESTER, MA, 01890 Significant noncompliance · $6k in penalties
NEDS TEXACO SERVICE 49 MIDDLESEX TPKE, BURLINGTON, MA, 01803 Significant noncompliance · $5k in penalties
GREATER BOSTON GASTROENTEROLO 475 FRANKLIN ST, FRAMINGHAM, MA, 01702 Significant noncompliance · $4k in penalties
MIDDLESEX SCHOOL LOWELL ROAD ATHLETIC FIELDS 1400 LOWELL ROAD, CONCORD, MA, 01742 Significant noncompliance

Largest penalties

Penalties assessed over the last five years.

UNITED PARCEL SERVICE MAWLG 40 FORDHAM RD, WILMINGTON, MA, 01887 $5.3M in penalties
UNITED PARCEL SERVICE MAWAT 15 ARLINGTON ST, WATERTOWN, MA, 02472 $5.3M in penalties
UNITED PARCEL SERVICE MASOM 43 THIRD AVE, SOMERVILLE, MA, 02143 $5.3M in penalties
UNITED PARCEL SERVICE MACHE 87 BRICK KILN RD, CHELMSFORD, MA, 01824 $5.3M in penalties
SCHNITZER NORTHEAST 69 ROVER ST, EVERETT, MA, 02149 $1.6M in penalties

Superfund sites

MINUTE MAN NATIONAL HISTORIC PARK 174 LIBERTY ST, CONCORD, MA, 01742
W R GRACE DARAMIC PLANT 51 INDEPENDENCE RD., ACTON, MA, 01720
AGWAY/KRESS PROPERTY KNOX TRAIL, ACTON, MA, 01720
W.R. GRACE & CO., INC. (ACTON PLANT) 50 INDEPENDENCE RD, ACTON, MA, 01720
STARMET 2229 MAIN ST., CONCORD, MA, 01742
REXNORD KNIFE DIVISION 4 POWDER MILL RD, ACTON, MA, 01754
SHAFFER LANDFILL POND ST., BILLERICA, MA, 01862
WATERTOWN BEMIS DUMP PLEASANT STREET, WATERTOWN, MA, 02472
SPERRY RESEARCH CENTER 100 NORTH RD, SUDBURY, MA, 01776
RAYTHEON MISSILE SYSTEMS DIVISION 180 HARTWELL ROAD, BEDFORD, MA, 01730

Data centers

LUPOLI DEVELOPMENT 550 KING ST, LITTLETON, MA, 01460
AMAZON COM SERVICES LLC DKO1 153 TAYLOR ST, LITTLETON, MA, 01460
AMAZON.COM LLC - DK01 151 TAYLOR ST, LITTLETON, MA, 01460
SP 600 WINTER OWNER LLC 600 WINTER ST, WALTHAM, MA, 02451
580 WINTER STREET LLC 580 WINTER ST, WALTHAM, MA, 02451
HOSPITAL ELECTRONICS INC 580 WINTER ST, WALTHAM, MA, 02154
115 2ND AVENUE LLC 115 AND 125 SECOND AVE, WALTHAM, MA, 02454-0000
CYXTERA BO-3 115 SECOND AVE, WALTHAM, MA, 024510000
CROSS STREET ASSOCIATED LLC 24 COOK ST, BILLERICA, MA, 01821
EQUINIX 41 ALEXANDER RD, BILLERICA, MA, 01821

Towns in Middlesex County

Bordering counties

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. The Data page explains where each record comes from and how it can mislead.