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.
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.
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.
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 |
Easton Utilities | Easton, MD | 16,118 | 5 |
City of Hagerstown | Hagerstown, MD | 88,000 | 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 Aberdeen | Aberdeen, MD | 16,200 | 1 |
City of Cumberland | Cumberland, MD | 27,039 | 1 |
City of Annapolis | Annapolis, MD | 35,000 | 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 | |||
Haloacetic acids (HAA5) | 246 | 5,171,790 | 250 | 5,243,304 | |||
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 | |||
Dibromoacetic acid | 13 | 44,229 | 13 | 44,229 | |||
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 | |||
Bromochloroacetic acid | 1 | 3,500 | 1 | 3,500 | |||
Perfluoroheptanoic acid (PFHPA) | 1 | 3,500 | 1 | 3,500 | |||
Perfluorononanoic acid (PFNA) | 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 | |||
Styrene | 1 | 87 | 1 | 87 | |||
Manganese | 1 | 87 | 15 | 199,383 |
Contaminants found in Maryland above legal limits
Contaminant | # of Utilities | People Served | |
---|---|---|---|
Haloacetic acids (HAA5) | 2 | 2,388 | |
Nitrate | 1 | 40 | |
Arsenic | 1 | 32 |