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
Rolling Acres California, MD 699 5 -
St Michaels Catholic Church Mount Airy, MD 697 6 -
Prospect Mill Elementary Bel Air, MD 691 130 -
Mount Aetna Hagerstown, MD 688 8 -
Martingham Utilities Cooperative St. Michaels, MD 675 20 -
Calvert Middle School Prince Frederick, MD 675 13 -
Town of Chesapeake City [Formerly South] Chesapeake City, MD 673 38 -
Piney Point California, MD 672 9 Clean
Glenwood Library Columbia, MD 671 0 -
Catoctin Mountain Nat. Park-Misty Mount Thurmont, MD 668 1 -
Folly Quarter Middle School Ellicott City, MD 667 10 -
Mount Savage School Cumberland, MD 665 6 -
Piney Point Elementary School Loveville, MD 665 26 -
Boones Mobile Estates Lothian, MD 650 18 -
Davidsonville Elementary Pasadena, MD 650 12 -
Sandymount Elementary Westminster, MD 650 13 -
Lettie Marshall Dent Elementary Loveville, MD 650 28 -
East Coast Fuel, LLC Hebron, MD 650 55 -
Patuxent Elementary School Prince Frederick, MD 637 13 -
Forest Hill Elementary School Bel Air, MD 637 31 -
Bayshore Campground Rock Hall, MD 636 16 -
Town of Millington Millington, MD 625 12 Clean
Town of Sharptown Sharptown, MD 625 101 -
Chesapeake Christian Fellowship Davidsonville, MD 625 2 -
Frontiertown- Community Ctr + SW Sites Southfield, MD 624 0 -
Kemptown Elementary Frederick, MD 623 31 -
Town of Friendsville Oakland, MD 622 15 -
St. Clements Shores California, MD 620 7 -
Frontiertown Lazy River Bathhouse Berlin, MD 620 8 -
Jacksonville Elementary Baltimore, MD 618 6 -
Frontiertown Bathhouse # 3 Berlin, MD 618 3 -
Frontiertown Bathhouse # 1 Berlin, MD 618 4 -
The Shoppes at Waysons Corner Lothian, MD 615 0 -
Plum Point Elementary School Prince Frederick, MD 615 9 -
Town Center Amoco Edgewater, MD 615 17 -
Charlotte Hall California, MD 615 10 -
Hunters Brooke/Falcon Ridge Subd La Plata, MD 614 7 -
Immaculate Conception Roman Cath Chur Mechanicsville, MD 614 5 -
Fallston Library Belcamp, MD 610 8 -
Huntingtown Elementary School Prince Frederick, MD 609 18 -
T.c. Martin Elementary School La Plata, MD 609 0 -
Shore Stop #219 Winston-Salem, MD 609 14 -
Holy Family Cath. Church Davidsonville, MD 607 4 -
Mardela Goose Creek Inc Mardela Springs, MD 607 5 -
Dash in Owings La Plata, MD 606 16 -
Jefferson Market Finksburg, MD 606 13 -
Camp Louise Baltimore, MD 606 0 -
Elk Neck Elementary Elkton, MD 605 11 -
Highs #1 - Whiteford White Hall, MD 605 1 -
U5 Foods - Bethlehem Preston, MD 604 14 -
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