EPA Air · violations by state and year

High-priority air violations in Maryland, 2026

13Violations

A high-priority violation is the most serious class of Clean Air Act non-compliance an agency records against a source; a federally reportable violation is the next step down in severity. Every violation below was recorded against a source in Maryland during 2026; one facility can appear more than once, because this is a record of what happened rather than a list of places.

Counties in Maryland, 2026

Maryland, other years

High-priority air violations recorded in Maryland, 2026

Date	Facility	Where	Kind	Agency
2026-09-09	AMERICAN YEAST	DUNDALK, Baltimore, MD	HPV day-zero determination	State
2026-08-21	NAVAL SUPPORT FACILITY, INDIAN HEAD — high-priority violation on file	INDIAN HEAD, Charles, MD	HPV day-zero determination	State
2026-06-17	ANDREWS AIR FORCE BASE — high-priority violation on file	ANDREWS AIR FORCE BASE, Prince George's, MD	HPV day-zero determination	State
2026-05-27	BLUEGRASS MATERIALS - NORTH EAST QUARRY — high-priority violation on file	NORTH EAST, Cecil, MD	Earliest FRV determination	State
2026-05-27	JOHNS HOPKINS HOSPITAL — high-priority violation on file	BALTIMORE, Baltimore (city), MD	HPV day-zero determination	State
2026-04-29	PAUL REED SMITH GUITARS — high-priority violation on file	STEVENSVILLE, Queen Anne's, MD	HPV day-zero determination	State
2026-04-23	MONTGOMERY COUNTY RRF — high-priority violation on file	DICKERSON, Montgomery, MD	HPV day-zero determination	State
2026-04-22	M. LUIS PRODUCTS, LLC — high-priority violation on file	ROCKVILLE, Montgomery, MD	Earliest FRV determination	State
2026-04-21	GORE, W.L. - CHERRY HILL PLANT — high-priority violation on file	ELKTON, Cecil, MD	HPV day-zero determination	State
2026-04-15	JOHNS HOPKINS UNIVERSITY - APL — high-priority violation on file	LAUREL, Howard, MD	Earliest FRV determination	State
2026-04-15	YORK BUILDING PRODUCTS — high-priority violation on file	PORT DEPOSIT, Cecil, MD	Earliest FRV determination	State
2026-02-06	GRAY & SON, INC. - ROSEDALE — high-priority violation on file	ROSEDALE, Baltimore, MD	HPV day-zero determination	State
2026-02-06	GRAY & SON, INC. - ABERDEEN — high-priority violation on file	ABERDEEN, Harford, MD	HPV day-zero determination	State

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

What this page shows

This page covers Clean Air Act facilities in the EPA air register with violations in MD for 2026. It lists 12 violations recorded in 2026.