Maryland

468 Utilities
Serving: 5,324,000
Data available: 2012-2017
Contaminants Found: 89

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	27,039
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	52,000
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	Fort George Meade, MD	62,234
Freedom District	Westminster, MD	24,867
Glen Burnie-Broadneck	Millersville, MD	290,606
Harford County Department of Public Works	Bel Air, MD	104,567
Howard County Department of Public Works	Columbia, MD	247,000
Lexington Park	Hollywood, MD	43,030
Maryland American Water Company	Bel Air, MD	13,200
New Design - Frederick County	Frederick, MD	49,200
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	82,731

Utilities that accumulated/accrued the most violation points as of April 2016 to March 2019 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
Golden Kay Apartments	Elkton, MD	89	64
Reckley Spring Community Water	Cumberland, MD	78	59
Glen Meadows Retirement Community	Glen Arm, MD	400	33
City of Havre De Grace	Havre De Grace, MD	14,000	30
Chapel Hill Nursing Center	Randallstown, MD	125	27
Barrelville	Mt. Savage, MD	130	26
Town of Perryville	Perryville, MD	3,672	24
Midtown Waterworks Cooperative	Ewell, MD	34	23
Reliance Mobile Home Park	Denton, MD	200	22
Tylerton Waterwork Cooperative	Tylerton, MD	100	21
Freedom District	Westminster, MD	24,867	20
B&l Mobile Home Park	Huntingtown, MD	65	17
Town of Poolesville	Poolesville, MD	5,400	15
Thunderbird Motel	Newburg, MD	60	14
Boh-nak Mobile Home Park	Fruitland, MD	85	14
Woodlawn Mobile Home Park - Old	Port Deposit, MD	150	13
Sullivans Trailer Court Inc.	Baltimore, MD	70	11
Harbour Light Estates Community	Salisbury, MD	95	11
Naylor Mill Village Mobile Home Park	Fruitland, MD	180	11
Oak Lane Mobile Home Park	Port Deposit, MD	55	11
Bay Country Estates Mobile Home Park	Conowingo, MD	276	10
Fort Detrick	Frederick, MD	7,900	10
Thunderbird Apartments	Waldorf, MD	31	10
Reservoir Trailer Park	Finksburg, MD	79	10
City of Baltimore	Baltimore, MD	1,600,000	10
Cedarhurst Mobile Home Park	Farmington Hills, MD	220	10
Garden Estates Central Water	La Plata, MD	55	7
Misty Meadows 1 / Highland Hills M.h.p.	Street, MD	460	7
Bryans Road	La Plata, MD	5,428	7
Chesapeake Estates Mobile Home Park	Rising Sun, MD	159	6

Large utilities that accumulated/accrued the most violation points as of April 2016 to March 2019 in Maryland

Utility	Location	People Served	Violation Points
City of Havre De Grace	Havre De Grace, MD	14,000	30
Freedom District	Westminster, MD	24,867	20
City of Baltimore	Baltimore, MD	1,600,000	10
City of Hagerstown	Hagerstown, MD	88,000	5
Easton Utilities	Easton, MD	16,118	5
Waldorf	La Plata, MD	82,731	3
Town of Elkton	Elkton, MD	12,458	2
Howard County Department of Public Works	Columbia, MD	247,000	2
City of Cumberland	Cumberland, MD	27,039	1
City of Annapolis	Annapolis, MD	35,000	1
City of Aberdeen	Aberdeen, MD	16,200	1

Contaminants found in Maryland above health guidelines

	Found above health guidelines			Found
Contaminant	# of Utilities	People Served		# of Utilities	People Served
Total trihalomethanes (TTHMs)		382	5,311,915			382	5,311,915
Chromium (hexavalent)		47	4,804,382			50	4,844,909
Nitrate		198	4,455,390			221	4,835,818
Nitrate and nitrite		127	4,296,075			132	4,305,677
Radium, combined (-226 & -228)		142	2,942,809			143	2,951,249
Chloroform		276	1,307,623			284	1,383,665
Bromodichloromethane		225	936,187			225	936,187
Dibromochloromethane		188	888,238			191	899,418
Chlorate		12	241,834			50	4,879,105
Arsenic		99	206,723			99	206,723
Uranium		8	158,273			8	158,273
Perfluorooctanoic acid (PFOA)		4	116,538			4	116,538
Dichloroacetic acid		28	70,022			28	70,022
Trichloroacetic acid		27	67,613			27	67,613
Bromoform		45	61,849			69	267,137
Atrazine		4	56,692			20	3,920,861
Cadmium		6	49,713			6	49,713
Radon		18	48,656			18	48,656
1,2,3-Trichloropropane		2	30,843			2	30,843
Tetrachloroethylene (perchloroethylene)		5	30,790			5	30,790
Thallium		4	16,317			4	16,317
Chloromethane		8	6,309			82	1,991,681
1,2-Dichloroethane		1	6,200			1	6,200
Perfluorononanoic acid (PFNA)		1	3,500			1	3,500
Perfluoroheptanoic acid (PFHPA)		1	3,500			1	3,500
Trichloroethylene		1	1,921			4	113,188
Carbon tetrachloride		2	1,700			3	8,450
1,2-Dibromo-3-chloropropane (DBCP)		1	885			2	31,228
Heptachlor epoxide		2	430			2	430
Manganese		1	87			15	199,383
Styrene		1	87			1	87

Contaminants found in Maryland above legal limits

Contaminant	People Served
Haloacetic acids (HAA5)	2	2,388
Nitrate	1	40
Arsenic	1	32

Maryland

468 Utilities

Serving: 5,324,000

Data available: 2012-2017

Contaminants Found: 89

Large utilities in Maryland

Utilities that accumulated/accrued the most violation points as of April 2016 to March 2019 in Maryland

Large utilities that accumulated/accrued the most violation points as of April 2016 to March 2019 in Maryland

Contaminants found in Maryland above health guidelines

Contaminants found in Maryland above legal limits