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EWG's Tap Water Database — 2019 UPDATE

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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

UtilityLocationPeople
Served
Broad CreekMillersville, MD23,179
Chapel Hill - Aberdeen Proving GroundsAberdeen, MD15,000
City of AberdeenAberdeen, MD16,200
City of AnnapolisAnnapolis, MD35,000
City of BaltimoreBaltimore, MD1,600,000
City of BowieBowie, MD25,000
City of CambridgeCambridge, MD15,000
City of CumberlandCumberland, MD27,039
City of FrederickFrederick, MD54,000
City of FrostburgFrostburg, MD11,000
City of HagerstownHagerstown, MD88,000
City of Havre De GraceHavre De Grace, MD14,000
City of RockvilleRockville, MD52,000
City of SalisburySalisbury, MD30,343
City of WestminsterWestminster, MD35,256
Crofton-OdentonMillersville, MD62,986
Easton UtilitiesEaston, MD16,118
Fort George G. MeadeFort George Meade, MD62,234
Freedom DistrictWestminster, MD24,867
Glen Burnie-BroadneckMillersville, MD290,606
Harford County Department of Public WorksBel Air, MD104,567
Howard County Department of Public WorksColumbia, MD247,000
Lexington ParkHollywood, MD43,030
Maryland American Water CompanyBel Air, MD13,200
New Design - Frederick CountyFrederick, MD49,200
Ocean PinesBerlin, MD11,890
Patuxent Naval Air Station (NAVFAC-WASH)Patuxent River, MD22,000
Town of ElktonElkton, MD12,458
Town of Ocean CityOcean City, MD30,000
WaldorfLa Plata, MD82,731
More

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.

UtilityLocationPeople
Served
Violation
Points
Golden Kay ApartmentsElkton, MD8964
Reckley Spring Community WaterCumberland, MD7859
Glen Meadows Retirement CommunityGlen Arm, MD40033
City of Havre De GraceHavre De Grace, MD14,00030
Chapel Hill Nursing CenterRandallstown, MD12527
BarrelvilleMt. Savage, MD13026
Town of PerryvillePerryville, MD3,67224
Midtown Waterworks CooperativeEwell, MD3423
Reliance Mobile Home ParkDenton, MD20022
Tylerton Waterwork CooperativeTylerton, MD10021
Freedom DistrictWestminster, MD24,86720
B&l Mobile Home ParkHuntingtown, MD6517
Town of PoolesvillePoolesville, MD5,40015
Thunderbird MotelNewburg, MD6014
Boh-nak Mobile Home ParkFruitland, MD8514
Woodlawn Mobile Home Park - OldPort Deposit, MD15013
Sullivans Trailer Court Inc.Baltimore, MD7011
Harbour Light Estates CommunitySalisbury, MD9511
Naylor Mill Village Mobile Home ParkFruitland, MD18011
Oak Lane Mobile Home ParkPort Deposit, MD5511
Bay Country Estates Mobile Home ParkConowingo, MD27610
Fort DetrickFrederick, MD7,90010
Thunderbird ApartmentsWaldorf, MD3110
Reservoir Trailer ParkFinksburg, MD7910
City of BaltimoreBaltimore, MD1,600,00010
Cedarhurst Mobile Home ParkFarmington Hills, MD22010
Garden Estates Central WaterLa Plata, MD557
Misty Meadows 1 / Highland Hills M.h.p.Street, MD4607
Bryans RoadLa Plata, MD5,4287
Chesapeake Estates Mobile Home ParkRising Sun, MD1596

Large 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.

UtilityLocationPeople
Served
Violation
Points
City of Havre De GraceHavre De Grace, MD14,00030
Freedom DistrictWestminster, MD24,86720
City of BaltimoreBaltimore, MD1,600,00010
City of HagerstownHagerstown, MD88,0005
Easton UtilitiesEaston, MD16,1185
WaldorfLa Plata, MD82,7313
Town of ElktonElkton, MD12,4582
Howard County Department of Public WorksColumbia, MD247,0002
City of CumberlandCumberland, MD27,0391
City of AnnapolisAnnapolis, MD35,0001
City of AberdeenAberdeen, MD16,2001

Contaminants found in Maryland above health guidelines

Found above health guidelinesFound
Contaminant# of UtilitiesPeople Served# of UtilitiesPeople Served

Total trihalomethanes (TTHMs)
3825,311,9153825,311,915

Chromium (hexavalent)
474,804,382504,844,909

Nitrate
1984,455,3902214,835,818

Nitrate and nitrite
1274,296,0751324,305,677

Radium, combined (-226 & -228)
1422,942,8091432,951,249

Chloroform
2761,307,6232841,383,665

Bromodichloromethane
225936,187225936,187

Dibromochloromethane
188888,238191899,418

Chlorate
12241,834504,879,105

Arsenic
99206,72399206,723

Uranium
8158,2738158,273

Perfluorooctanoic acid (PFOA)
4116,5384116,538

Dichloroacetic acid
2870,0222870,022

Trichloroacetic acid
2767,6132767,613

Bromoform
4561,84969267,137

Atrazine
456,692203,920,861

Cadmium
649,713649,713

Radon
1848,6561848,656

1,2,3-Trichloropropane
230,843230,843

Tetrachloroethylene (perchloroethylene)
530,790530,790

Thallium
416,317416,317

Chloromethane
86,309821,991,681

1,2-Dichloroethane
16,20016,200

Perfluorononanoic acid (PFNA)
13,50013,500

Perfluoroheptanoic acid (PFHPA)
13,50013,500

Trichloroethylene
11,9214113,188

Carbon tetrachloride
21,70038,450

1,2-Dibromo-3-chloropropane (DBCP)
1885231,228

Heptachlor epoxide
24302430

Manganese
18715199,383

Styrene
187187

Contaminants found in Maryland above legal limits

Contaminant# of UtilitiesPeople Served

Haloacetic acids (HAA5)
22,388

Nitrate
140

Arsenic
132