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Environmental compliance · county

Environmental compliance in New Haven County

2,238 active EPA-regulated sites in New Haven County, Connecticut: 168 with an identified violation, 51 in significant violation, 579 inspections and $11.2 million in penalties over five years — EPA ECHO, as of October 18, 2026.

Cite: FACTANKER, https://factanker.com/us/ct/new-haven-county/environmental-compliance

How many facilities in New Haven County, Connecticut are regulated by the EPA, and how many are in violation (as of October 18, 2026)?

MeasureValue
Active EPA-regulated sites2,238
Sites with an identified violation168
Sites in significant violation51
Inspections and evaluations, last 5 years579
Formal enforcement actions, last 5 years69
Penalties, last 5 years (shared federal cases once)$11.2 million

How many active facilities in New Haven County, Connecticut fall under each EPA program?

A facility can be in several programs.

ProgramActive sites
Air (Clean Air Act)719
Water discharge permits (Clean Water Act, NPDES)680
Hazardous waste (RCRA)1,202
Drinking water systems (SDWA)203
Toxics Release Inventory reporters78
Greenhouse gas reporters (GHGRP)11

Which large facilities in New Haven County, Connecticut does the EPA track, and are they in violation?

FacilityCompliance statusQuarters in violation (of 12)Penalties, 5 years
GLOBAL NEW HAVEN TERMINALS LLC
New Haven, CT
Significant Violation12$2.0 million
ALLNEX USA INCORPORATED
Wallingford, CT
Significant Violation9–
TRADEBE TREATMENT & RECYCLING
Meriden, CT
Significant Violation9$73,095
ROEHM AMERICA LLC
Wallingford, CT
Significant Violation7$54,800
ANSONIA COPPER & BRASS
Ansonia, CT
Violation12–
CARPIN MFG INC
Waterbury, CT
Violation12–
PHOENIX SOIL LLC
Waterbury, CT
Violation12–
POWER SEMICONDUCTORS INC
Milford, CT
Violation12–
WAMPUS MILFORD ASSOCIATES SITE
Milford, CT
Violation12–
WATERBURY ROLLING MILLS, INC.
Waterbury, CT
Violation12–
CITY OF WEST HAVEN WATER POLLUTION CONTROL FAC.
West Haven, CT
Violation Identified11–
GBC METALS LLC SOMERS THIN STRIP
Waterbury, CT
Violation Identified11–
CITY OF WATERBURY WPCF
Waterbury, CT
Violation Identified7–
MIRROR POLISHING & PLATING CO INC
Waterbury, CT
Violation Identified7–
EAST SHORE WATER POLL ABATEMENT FACILITY
New Haven, CT
Violation Identified6–
SEIDEL, INC.
Waterbury, CT
No Violation Identified6–
SEYMOUR WPCF
Seymour, CT
Violation Identified6–
ALGONQUIN GAS TRANSMISSION LLC - OXFORD COMPRESSOR STATION
Oxford, CT
No Violation Identified5$38,640
MILFORD BEAVER BROOK WPCF
Milford, CT
Violation Identified5–
MILFORD POWER STATION
Milford, CT
Violation Identified5–
UNITED ALUMINUM CORPORATION
North Haven, CT
Violation Identified5–
WALLINGFORD WATER POLLUTION CONTROL FACILITY
Wallingford, CT
No Violation Identified5–
CHESIRE,WATER POLLUTION CONTROL FACILITY
Cheshire, CT
No Violation Identified4–
NAUGATUCK WATER POLLUTION CONTROL FACILITY
Naugatuck, CT
Violation Identified4$10,800
NRG DEVON STATION POWER PLANT
Milford, CT
No Violation Identified4–
ANSONIA WATER POLLUTION CONTROL FACILITY
Ansonia, CT
No Violation Identified3–
ALFRED L PIERCE GENERATING STATION
Wallingford, CT
No Violation Identified1–
AMETEK, SPECIALTY METAL PRODUCTS
Wallingford, CT
No Violation Identified1–
BRANFORD WATER POLLUTION CONTROL FACILITY
Branford, CT
No Violation Identified1–
DERBY WATER POLLUTION CONTROL FACILITY
Derby, CT
No Violation Identified1–
ALLEGHENY LUDLUM STEEL STRIP PLANT
Wallingford, CT
No Violation Identified0–
ALLNEX USA INC -WALLINGFORD CT PLANT
Wallingford, CT
No Violation Identified0–
ATLANTIC WIRE COMPANY LLC
Branford, CT
No Violation Identified0–
BALL & SOCKET MANUFACTURING CO
Cheshire, CT
No Violation Identified0–
CPV TOWANTIC ENERGY CENTER
Oxford, CT
No Violation Identified0–
CYTEC IND INC
Wallingford, CT
No Violation Identified0–
ENGLISH STATION POWER PLANT
East Haven, CT
No Violation Identified0$57,728
GB II NEW HAVEN, LLC - NEW HAVEN HARBOR STATION
New Haven, CT
No Violation Identified0–
GENERAL DATA CO
Waterbury, CT
No Violation Identified0–
IDEAL PRODUCTS
Beacon Falls, CT
No Violation Identified0–
MAGELLAN PETROLEUM TERMINAL
New Haven, CT
No Violation Identified0–
MERIDEN WATER POLLUTION CONTROL FACILITY
Meriden, CT
No Violation Identified0–
MOTIVA ENTERPRISES LLC
New Haven, CT
No Violation Identified0–
NEW HAVEN TERMINAL - EAST HAVEN
East Haven, CT
No Violation Identified0–
NORTH HAVEN WATER POLLUTION CONTROL FACILITY
North Haven, CT
No Violation Identified0–
ROBERTSHAW CONTROLS CO
Milford, CT
No Violation Identified0–
SAINT-GOBAIN PPL CORP
New Haven, CT
No Violation Identified0–
SCHICK MANUFACTURING, INC.
Milford, CT
No Violation Identified0–
WALLINGFORD LANDFILL
Wallingford, CT
No Violation Identified0–
WATERBURY COMPANIES INC
Waterbury, CT
No Violation Identified0–
WATERBURY PEAKING ELEC GENERATING PLANT
Waterbury, CT
No Violation Identified0$81,000
WYATT ENERGY INCORPORATED
New Haven, CT
No Violation Identified0–
YALE UNIVERSITY CENTRAL POWER PLANT
New Haven, CT
No Violation Identified0–
YALE UNIVERSITY - SCHOOL OF MEDICINE
New Haven, CT
No Violation Identified0–

All figures for New Haven County · Connecticut · United States

EPA Enforcement and Compliance History Online (ECHO), weekly national export. Counts cover active sites in the Facility Registry Service; inspections, formal actions and penalties cover the last five years, quarters in violation the last three years. The EPA attributes a case that covers several facilities to each of them; area penalty totals here count an amount shared through the same federal case once, facility figures show the amount attributed to that facility. Large facilities are Clean Air Act majors, Clean Water Act majors and large hazardous waste generators or handlers. Source record.

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