EPA Air · stack tests by county and year

Air-emissions stack tests in New Haven County, Connecticut, 2025

63Stack tests

A stack test measures what a source actually emits, at the stack, against the limit in its permit. Each row below is one stack test recorded against a source in New Haven County, Connecticut during 2025. A facility can appear several times: this is the year’s record of what happened, not a list of places. The sources themselves are on the New Haven County facility page.

New Haven County, Connecticut, 2025

Air-emissions stack tests in New Haven County, other years

Air-emissions stack tests recorded in New Haven County, Connecticut, 2025

Date	Facility	Kind	Agency
2025-12-11	BUCKEYE PT TERMINALS, L.P. - WATERFRONT STREET TERMINAL	Pass	State
2025-12-10	COVIDIEN LP	Pass	State
2025-12-09	BUCKEYE PT TERMINALS, L.P. - FORBES AVENUE TERMINAL	Pass	State
2025-11-05	GLANBIA NUTRITIONALS (NA) INC. — high-priority violation on file	Pass	State
2025-10-30	GB II NEW HAVEN, LLC - NEW HAVEN HARBOR STATION	Pass	State
2025-10-29	GB II NEW HAVEN, LLC - NEW HAVEN HARBOR STATION	Pass	State
2025-10-29	GB II NEW HAVEN, LLC - NEW HAVEN HARBOR STATION	Pass	State
2025-10-15	WATERBURY GENERATION, LLC	Pass	State
2025-09-25	NAUGATUCK WPCA/POTW	Pass	State
2025-09-24	CITY OF WATERBURY WPCF	Pass	State
2025-09-16	EAST SHORE WATER POLL ABATEMENT FACILITY	Pass	State
2025-09-11	ROEHM AMERICA, LLC — high-priority violation on file	Pass	State
2025-09-11	SOLVENTUM PURIFICATION, INC	Pass	State
2025-08-21	DEVON POWER LLC	Pass	State
2025-08-20	DEVON POWER LLC	Pass	State
2025-08-19	DEVON POWER LLC	Pass	State
2025-08-15	DEVON POWER LLC	Pass	State
2025-08-12	APS TECHNOLOGY	Pass	State
2025-08-01	AMETEK, SPECIALTY METAL PRODUCTS	Pass	State
2025-06-16	YALE UNIVERSITY, SCHOOL OF MEDICINE PREMISES	Pass	State
2025-06-13	YALE UNIVERSITY, SCHOOL OF MEDICINE PREMISES	Pass	State
2025-06-05	TILCON CONNECTICUT - WALLINGFORD PLANT	Pass	State
2025-05-30	SHELL OIL PRODUCTS US	Pass	State
2025-05-13	DEVON POWER LLC	Pass	State
2025-05-09	DEVON POWER LLC	Pass	State
2025-05-09	CONNECTICUT JET POWER - BRANFORD STATION	Pass	State
2025-05-09	CONNECTICUT JET POWER - BRANFORD STATION	Pass	State
2025-05-08	DEVON POWER LLC	Pass	State
2025-05-07	DEVON POWER LLC	Pass	State
2025-05-06	DEVON POWER LLC	Pass	State
2025-05-06	DEVON POWER LLC	Pass	State
2025-05-02	DEVON POWER LLC	Pass	State
2025-05-02	DEVON POWER LLC	Pass	State
2025-05-01	DEVON POWER LLC	Pass	State
2025-05-01	DEVON POWER LLC	Pass	State
2025-04-30	YALE UNIVERSITY, SCHOOL OF MEDICINE PREMISES	Pass	State
2025-04-02	LUVATA WATERBURY, INC.	Pass	State
2025-04-01	MEC DBA EYELET CRAFTERS, INC	Pass	State
2025-03-27	YALE UNIVERSITY / CENTRAL POWER PLANT	Pass	State
2025-03-27	YALE UNIVERSITY / CENTRAL POWER PLANT	Pass	State
2025-03-26	YALE UNIVERSITY / CENTRAL POWER PLANT	Pass	State
2025-03-21	GB II NEW HAVEN, LLC - NEW HAVEN HARBOR STATION	Pass	State
2025-03-21	GB II NEW HAVEN, LLC - NEW HAVEN HARBOR STATION	Pass	State
2025-03-19	YALE UNIVERSITY, SCHOOL OF MEDICINE PREMISES	Pass	State
2025-03-19	YALE UNIVERSITY, SCHOOL OF MEDICINE PREMISES	Pass	State
2025-03-13	YALE UNIVERSITY, SCHOOL OF MEDICINE PREMISES	Pass	State
2025-03-13	WALLINGFORD ENERGY, LLC	Pass	State
2025-03-12	YALE UNIVERSITY, SCHOOL OF MEDICINE PREMISES	Pass	State
2025-03-12	YALE UNIVERSITY, SCHOOL OF MEDICINE PREMISES	Pass	State
2025-02-19	NAUGATUCK WPCA/POTW	Pass	State
2025-02-13	YALE UNIVERSITY, SCHOOL OF MEDICINE PREMISES	Pass	State
2025-02-13	YALE UNIVERSITY, SCHOOL OF MEDICINE PREMISES	Pass	State
2025-02-11	YALE UNIVERSITY, SCHOOL OF MEDICINE PREMISES	Pass	State
2025-02-11	YALE UNIVERSITY, SCHOOL OF MEDICINE PREMISES	Pass	State
2025-02-04	ALGONQUIN GAS TRANSMISSION LLC - OXFORD COMPRESSOR STATION	Pass	State
2025-02-04	ALGONQUIN GAS TRANSMISSION LLC - OXFORD COMPRESSOR STATION	Pass	State
2025-01-23	ROEHM AMERICA, LLC — high-priority violation on file	Fail	State
2025-01-16	IROQUOIS - MILFORD COMPRESSOR STATION	Pass	State
2025-01-16	IROQUOIS - MILFORD COMPRESSOR STATION	Pass	State
2025-01-15	YALE UNIVERSITY / CENTRAL POWER PLANT	Pass	State
2025-01-15	YALE UNIVERSITY / CENTRAL POWER PLANT	Pass	State
2025-01-15	YALE UNIVERSITY / CENTRAL POWER PLANT	Pass	State
2025-01-06	YALE UNIVERSITY WEST CAMPUS	Pass	State

Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.

What this page shows

This page covers Clean Air Act facilities in the EPA air register and stack tests in New Haven county, CT, for 2025. It lists 63 stack tests recorded in 2025.