EPA Air · stack tests by state, industry and year

Utilities (NAICS 2213): stack tests in Connecticut, 2026

9Stack tests

A stack test measures what a source actually emits, at the stack, against the limit in its permit. Each row is one stack test recorded during 2026 at a Connecticut source whose primary industry code is NAICS 2213. A facility filing more than one industry code is counted under the first one on its record.

Utilities (NAICS 2213) in Connecticut, other years

Other industries in Connecticut, 2026

Air-emissions stack tests recorded in Connecticut, 2026

Date	Facility	Where	Kind	Agency
2026-06-30	THE MATTABASSETT DISTRICT — high-priority violation on file	CROMWELL, Middlesex, CT	Pass	State
2026-06-18	EAST SHORE WATER POLL ABATEMENT FACILITY	NEW HAVEN, New Haven, CT	Pass	State
2026-06-10	HARTFORD WATER POLLUTION CONTROL FACILITY — high-priority violation on file	HARTFORD, Hartford, CT	Fail	State
2026-06-09	HARTFORD WATER POLLUTION CONTROL FACILITY — high-priority violation on file	HARTFORD, Hartford, CT	Pending	U.S. EPA
2026-06-08	HARTFORD WATER POLLUTION CONTROL FACILITY — high-priority violation on file	HARTFORD, Hartford, CT	Fail	State
2026-06-02	STAMFORD WPCA	STAMFORD, Fairfield, CT	Pass	State
2026-01-29	HARTFORD WATER POLLUTION CONTROL FACILITY — high-priority violation on file	HARTFORD, Hartford, CT	Fail	State
2026-01-22	HARTFORD WATER POLLUTION CONTROL FACILITY — high-priority violation on file	HARTFORD, Hartford, CT	Fail	State
2026-01-15	HARTFORD WATER POLLUTION CONTROL FACILITY — high-priority violation on file	HARTFORD, Hartford, CT	Pass	State

Primary NAICS code as filed on the facility record; dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.