Environmental compliance

Environmental compliance in Maryland

23,920 active EPA-regulated sites in Maryland: 812 with an identified violation, 509 in significant violation, $35.5 million in penalties over five years — EPA ECHO, as of October 18, 2026, by county and facility.

Cite: FACTANKER, https://factanker.com/us-environmental-compliance/md

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

Measure	Value
Active EPA-regulated sites	23,920
Sites with an identified violation	812
Sites in significant violation	509
Inspections and evaluations, last 5 years	5,002
Formal enforcement actions, last 5 years	607
Penalties, last 5 years (shared federal cases once)	$35.5 million

How many active facilities in Maryland fall under each EPA program?

A facility can be in several programs.

Program	Active sites
Air (Clean Air Act)	10,106
Water discharge permits (Clean Water Act, NPDES)	5,248
Hazardous waste (RCRA)	10,793
Drinking water systems (SDWA)	2,914
Toxics Release Inventory reporters	162
Greenhouse gas reporters (GHGRP)	51

Which counties in Maryland have the most facilities in significant violation of EPA rules?

County	Active sites	In violation	Significant violation	Penalties, 5 years
Baltimore County	3,112	70	47	$7.2 million
Baltimore city	2,979	52	43	$9.2 million
Prince George's County	2,730	54	42	$6.8 million
Montgomery County	2,668	60	42	$6.8 million
Anne Arundel County	2,201	69	42	$2.6 million
Harford County	1,029	42	27	$5.7 million
Cecil County	653	49	27	$969,893
St. Mary's County	432	33	24	$12,600
Frederick County	1,087	35	21	$6.0 million
Dorchester County	307	27	19	$50,000
Wicomico County	662	28	16	$21.4 million
Howard County	968	28	15	$6.4 million
Carroll County	783	29	15	$744,620
Calvert County	390	23	15	$100,727
Caroline County	328	21	15	$895,875
Charles County	544	29	13	$5.4 million
Worcester County	473	24	13	$0
Garrett County	287	24	13	$16,885
Washington County	776	28	12	$6.9 million
Queen Anne's County	322	17	12	$6,882
Talbot County	283	18	12	$5.5 million
Allegany County	388	21	11	$6.2 million
Kent County	204	16	8	$1,747
Somerset County	236	12	3	$62,000

Which large facilities in Maryland are in significant violation of EPA rules?

Facility	Compliance status	Quarters in violation (of 12)	Penalties, 5 years
PERDUE AGRIBUSINESS INC, ZION CHURCH ROAD COMPLEX Salisbury, MD	Significant Violation	12	$16.0 million
AMRIZE HAGERSTOWN CEMENT PLANT (FORMERLY HOLCIM HA Hagerstown, MD	Significant Violation	12	$128,000
PHOENIX SERVICES Baltimore, MD	Significant Violation	12	$16,000
BROADNECK WATER RECLAMATION FACILITY Annapolis, MD	Significant Violation	12	–
MONTGOMERY COUNTY RESOURCE RECOVERY FACILITY Dickerson, MD	Significant Violation	12	–
CUMBERLAND WASTEWATER TREATMENT PLANT Cumberland, MD	Significant Violation	12	–
CITY OF SALISBURY - WWTP Salisbury, MD	Significant Violation	12	–
JOHNS HOPKINS HOSPITAL Baltimore, MD	Significant Violation	12	–
CANAM STEEL CORP POINT OF ROCKS PLANT Point Of Rocks, MD	Significant Violation	11	$429,402
TOWN OF LA PLATA La Plata, MD	Significant Violation	11	–
CALVERT CLIFFS NUCLEAR POWER PLANT Lusby, MD	Significant Violation	11	–
US PUBLIC HEALTH SERVICE NATIONAL INSTITUTES OF HEALTH Bethesda, MD	Significant Violation	11	–
NEWLAND PARK LANDFILL Salisbury, MD	Significant Violation	11	–
U S COAST GUARD YARD Baltimore, MD	Significant Violation	10	–
XERXES CORP Williamsport, MD	Significant Violation	7	–
DEPT. OF THE NAVY, NAVAL SUPPORT FACILITY, INDIAN HEAD Indian Head, MD	Significant Violation	6	–
W L GORE & ASSOCIATES INCORPORATED CHERRY HILL SITE Elkton, MD	Significant Violation	2	–

Which large facilities in Maryland had the highest environmental penalties in the last five years?

Facility	Compliance status	Quarters in violation (of 12)	Penalties, 5 years
PERDUE AGRIBUSINESS INC, ZION CHURCH ROAD COMPLEX Salisbury, MD	Significant Violation	12	$16.0 million
PATAPSCO WASTEWATER TREATMENT FACILITY Baltimore, MD	Violation Identified	12	$511,600
CANAM STEEL CORP POINT OF ROCKS PLANT Point Of Rocks, MD	Significant Violation	11	$429,402
BACK RIVER WASTEWATER TREATMENT FACILITY Baltimore, MD	Violation Identified	12	$385,200
ENERGY TRANSFER - BALTIMORE TERMINAL Baltimore, MD	No Violation Identified	4	$185,000
US ARMY ABERDEEN PROVING GROUND Aberdeen Proving Ground, MD	Violation Identified	5	$165,056
AMRIZE HAGERSTOWN CEMENT PLANT (FORMERLY HOLCIM HA Hagerstown, MD	Significant Violation	12	$128,000
PSEG KEYS ENERGY CENTER Brandywine, MD	No Violation Identified	0	$125,000
ELKTON WWTP Elkton, MD	No Violation Identified	8	$96,342
WESTMINSTER WWTP Westminster, MD	No Violation Identified	1	$66,300
CRISFIELD WWTP Crisfield, MD	Violation Identified	12	$62,000
PLYMOUTH TUBE COMPANY Salisbury, MD	No Violation Identified	11	$55,000
LAFARGE BUILDING MATERIAL INC Sparrows Point, MD	No Violation Identified	1	$50,000
CHALK POINT GENERATING STATION Aquasco, MD	No Violation Identified	4	$49,000
W. R. GRACE & CO. - CONN. Curtis Bay, MD	No Violation Identified	3	$47,000
WESTERN BRANCH WASTEWATER TREATMENT PLANT Upper Marlboro, MD	Violation Identified	12	$44,360
AMERICAN YEAST Dundalk, MD	No Violation Identified	2	$44,000
LITTLE PATUXENT WATER RECLAMATION PLANT Savage, MD	Violation Identified	12	$42,318
TOWN OF CHESAPEAKE BEACH PUBLIC WORKS Chesapeake Beach, MD	Violation Identified	12	$25,151
DORSEY RUN ADVANCED WWTP Jessup, MD	Violation Identified	12	$20,000
CONSTELLATION POWER - PERRYMAN POWER PLANT Aberdeen, MD	No Violation Identified	2	$18,000
MATTAWOMAN WASTEWATER TREATMENT PLANT La Plata, MD	Violation Identified	12	$17,600
PHOENIX SERVICES Baltimore, MD	Significant Violation	12	$16,000
UNIVERSITY OF MARYLAND - COLLEGE PARK College Park, MD	No Violation Identified	5	$15,000
LIFOAM INDUSTRIES, LLC Belcamp, MD	No Violation Identified	0	$13,000

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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