Maryland

467 Utilities
Serving: 5,304,000
Data available: 2010-2015
Contaminants Found: 85

EWG's drinking water quality report for Maryland shows results of tests conducted by the water utilities in Maryland and provided to EWG by the Maryland Department of the Environment.

LARGE UTILITIES

ALL UTILITIES WITH VIOLATIONS

LARGE UTILITIES WITH VIOLATIONS

Below are utilities in Maryland serving over 10,000 people, listed alphabetically. Click the "more" button below to get the full list of utilities serving over 10,000 people.

Large utilities in Maryland

Utility	Location	People Served
Broad Creek	Millersville, MD	23,179
Chapel Hill - Aberdeen Proving Grounds	Aberdeen, MD	15,000
City of Aberdeen	Aberdeen, MD	16,200
City of Annapolis	Annapolis, MD	35,000
City of Baltimore	Baltimore, MD	1,600,000
City of Bowie	Bowie, MD	25,000
City of Cambridge	Cambridge, MD	15,000
City of Cumberland	Cumberland, MD	23,600
City of Frederick	Frederick, MD	54,000
City of Frostburg	Frostburg, MD	11,000
City of Hagerstown	Hagerstown, MD	88,000
City of Havre De Grace	Havre De Grace, MD	14,000
City of Rockville	Rockville, MD	46,500
City of Salisbury	Salisbury, MD	30,343
City of Westminster	Westminster, MD	35,256
Crofton-Odenton	Millersville, MD	62,986
Easton Utilities	Easton, MD	16,118
Fort George G. Meade	Laurel, MD	62,234
Freedom District	Westminster, MD	24,867
Glen Burnie-Broadneck	Millersville, MD	290,606
Harford County Department of Public Works	Abingdon, MD	104,567
Howard County Department of Public Works	Columbia, MD	247,000
Lexington Park	Hollywood, MD	41,537
Maryland American Water Company	Bel Air, MD	13,200
New Design - Frederick County	Frederick, MD	46,769
Ocean Pines	Berlin, MD	11,890
Patuxent Naval Air Station (NAVFAC-WASH)	Patuxent River, MD	22,000
Town of Elkton	Elkton, MD	12,458
Town of Ocean City	Ocean City, MD	30,000
Waldorf	La Plata, MD	82,400

Utilities that accumulated/accrued the most violation points as of October 2015 to September 2018 in Maryland

The Environmental Protection Agency's Enforcement and Compliance History Online (ECHO) database collects compliance and enforcement-related information for drinking water utilities nationwide. ECHO water quality violation scores take into account federal health-based water quality standards, as well as monitoring, reporting and other drinking water quality requirements. Points are accrued based on specific problems at the utility - violations of health-based drinking water standards receive more points than monitoring and reporting violations - and the length of time until the violations were corrected.

Utility	Location	People Served	Violation Points
Liberty Mobile Home Park	Federalsburg, MD	40	30
City of Westminster	Westminster, MD	35,256	20
City of Pocomoke City	Pocomoke City, MD	4,100	15
Holly Cove Harbor Mobile Home Park	Federalsburg, MD	45	12
Reckley Spring Community Water	Cumberland, MD	78	12
Springfield Hospital Distribution	Sykesville, MD	1,500	10
Reservoir Trailer Park	Finksburg, MD	79	10
Swann Haven Mobile Home Park	Easton, MD	44	7
Glen Meadows Retirement Community	Glen Arm, MD	400	7
Barrelville	Mt. Savage, MD	130	6
Misty Meadows 1 / Highland Hills M.h.p.	Street, MD	460	5
Misty Meadows 2 Mobile Home Park	Street, MD	70	5
Town of Willards	Willards, MD	940	5
Boh-nak Mobile Home Park	Fruitland, MD	85	5
Timber Grove Mobile Home Park	Street, MD	76	5
Independence Village	Charlotte Hall, MD	88	5
Charlotte Hall	Hollywood, MD	558	5
Thunderbird Apartments	Waldorf, MD	31	5
Fox Meadow	Hollywood, MD	128	5
Town of Centreville	Centreville, MD	3,322	5
Pleasant Hill Mobile Home Park	Elkton, MD	64	5
Hart Heritage	Street, MD	37	3
Sunset Lakes Mobile Home Park	Berlin, MD	48	3
Midtown Waterworks Cooperative	Ewell, MD	34	3
Town of Rising Sun	Rising Sun, MD	2,200	2
Rhodes Point South Waterworks	Rhodes Point, MD	100	2
Taylors Mobile Home Park	Greensboro, MD	27	2
Hill Waterworks Cooperative	Ewell, MD	100	2
Chapel Hill Nursing Center	Randallstown, MD	125	2
Clear View Mobile Home Park	Darlington, MD	28	2

Large utilities that accumulated/accrued the most violation points as of October 2015 to September 2018 in Maryland

Utility	Location	People Served	Violation Points
City of Westminster	Westminster, MD	35,256	20
New Design - Frederick County	Frederick, MD	46,769	1
Waldorf	La Plata, MD	82,400	1
Howard County Department of Public Works	Columbia, MD	247,000	1

Contaminants found in Maryland above health guidelines

	Found above health guidelines			Found
Contaminant	# of Utilities	People Served		# of Utilities	People Served
Chromium (hexavalent)		45	4,806,509			48	4,847,036
Total trihalomethanes (TTHMs)		148	4,578,891			166	4,898,639
Radium-228		104	2,770,002			104	2,770,002
Chloroform		140	2,675,146			145	2,973,428
Bromodichloromethane		113	2,621,400			113	2,621,400
Dibromochloromethane		81	2,519,583			83	2,533,283
Radium-226		109	844,266			109	844,266
Chlorate		12	241,834			47	4,875,839
Perfluorooctanoic acid (PFOA)		4	116,538			4	116,538
Arsenic		53	107,244			53	107,244
Nitrate		32	97,225			188	4,666,567
Atrazine		4	64,297			11	2,038,035
Radon		22	54,099			22	54,099
Uranium		7	53,406			7	53,406
Bromoform		13	51,754			20	2,131,180
Cadmium		2	35,506			2	35,506
Tetrachloroethylene (perchloroethylene)		5	30,790			5	30,790
1,2,3-Trichloropropane		1	30,343			1	30,343
Trichloroacetic acid		5	17,473			5	17,473
Dichloroacetic acid		5	17,473			5	17,473
Nitrate and nitrite		13	16,073			85	4,385,638
Perfluorohexane sulfonate (PFHXS)		1	3,500			1	3,500
Perfluorononanoic acid (PFNA)		1	3,500			1	3,500
Tritium		1	3,500			1	3,500
Perfluoroheptanoic acid (PFHPA)		1	3,500			1	3,500
Perfluorooctane sulfonate (PFOS)		1	3,500			1	3,500
Trichloroethylene		1	1,921			3	8,621
Chloromethane		6	1,788			91	2,372,460
Heptachlor epoxide		2	430			2	430
Manganese		1	87			16	244,283

Contaminants found in Maryland above legal limits

Contaminant	People Served
Total trihalomethanes (TTHMs)	3	16,068
Arsenic	4	3,136
Nitrate	1	40

Maryland

467 Utilities

Serving: 5,304,000

Data available: 2010-2015

Contaminants Found: 85

Large utilities in Maryland

Utilities that accumulated/accrued the most violation points as of October 2015 to September 2018 in Maryland

Large utilities that accumulated/accrued the most violation points as of October 2015 to September 2018 in Maryland

Contaminants found in Maryland above health guidelines

Contaminants found in Maryland above legal limits