PlainWater

Public Water Systems

3,215 active public water systems in MD, tracked from EPA's Safe Drinking Water Information System (SDWIS) across all 50 states. See our methodology.

Population Violations Health Violations Name
System Name Location Population Violations PFAS
Washington Suburban Sanitary Commission Laurel, MD 1,900,000 2 Detected
City of Baltimore Baltimore, MD 1,600,000 73 Detected
Glen Burnie-Broadneck Millersville, MD 290,606 82 Clean
Howard County D.p.w. Distribution Columbia, MD 286,158 20 Detected
Harford County D.p.w. Abingdon, MD 104,567 27 Clean
City of Hagerstown Hagerstown, MD 92,200 14 Clean
Waldorf - Charles County Dpw La Plata, MD 84,296 19 Detected
New Design - Frederick County Frederick, MD 74,911 28 Detected
Crofton-Odenton Millersville, MD 62,986 9 Clean
Fort George G. Meade Fort Meade, MD 62,234 64 Clean
City of Frederick Frederick, MD 54,000 11 Detected
City of Rockville MD 52,000 220 Detected
Lexington Park California, MD 43,030 31 Clean
City of Westminster Westminster, MD 35,256 70 Detected
City of Annapolis Annapolis, MD 35,000 11 Clean
City of Salisbury Salisbury, MD 30,343 18 Detected
Town of Ocean City Ocean City, MD 30,000 26 Clean
City of Cumberland Cumberland, MD 27,039 15 Clean
City of Bowie Bowie, MD 25,000 6 Clean
Freedom District Westminster, MD 24,867 81 Detected
Mgm National Harbor MD 24,000 2 Detected
Broad Creek Millersville, MD 23,179 8 Clean
Patuxent Naval Air Station (Navfac-Wash) Patuxent River, MD 22,000 164 Clean
City of Aberdeen Aberdeen, MD 18,006 5 Detected
Easton Utilities Easton, MD 17,357 8 Clean
Town of Elkton Elkton, MD 15,625 31 Detected
City of Cambridge Water Cambridge, MD 15,000 6 Clean
Chapel Hill - Aberdeen Proving Grounds Aberdeen, MD 15,000 14 Clean
City of Havre de Grace Havre de Grace, MD 14,000 126 Clean
Maryland American Water Company Hopewell, MD 13,200 12 Detected
Ocean Pines Berlin, MD 11,890 73 Detected
Town of la Plata La Plata, MD 11,535 33 Clean
City of Frostburg MD 11,000 18 Clean
Assateague National Park North Beach Leesport, MD 10,020 0 -
Town of Mount Airy Mount Airy, MD 9,890 156 Detected
Chesapeake Ranch Estates Lusby, MD 9,500 11 Clean
Stevensville Stevensville, MD 9,155 19 Clean
U.S. Naval Academy Annapolis, MD 8,700 19 Clean
Town of North East North East, MD 8,600 168 Detected
Town of Walkersville Walkersville, MD 8,440 34 Clean
Fort Detrick Frederick, MD 7,900 109 Detected
City of Brunswick Brunswick, MD 7,312 17 Clean
City of Taneytown Taneytown, MD 6,750 99 Detected
Town of Hampstead Hampstead, MD 6,600 21 Detected
Bryans Road La Plata, MD 6,260 11 Clean
Town of Thurmont Thurmont, MD 6,200 99 Detected
Town of Poolesville Poolesville, MD 6,005 144 Detected
Mystic Harbour Berlin, MD 5,945 26 Clean
City of Fruitland Fruitland, MD 5,907 12 Detected
Eastern Region Allegany Distrib. System Cumberland, MD 5,703 17 Clean
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