EPA Air · violations by state and year

High-priority air violations in Maryland, 2026

12Violations

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
2026-08-21	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.