All water systems in Maryland
3,216 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Reese and Community Vol. Fire Company Carroll County |
129 | 0 | 0 | |
|
St. Pauls Church Kent County |
129 | 1 | 0 | |
|
Ballstone Mansion Baltimore County |
128 | 0 | 0 | |
|
Baltimore Korean Sda Church Anne Arundel County |
128 | 0 | 0 | |
|
Fox Meadow St. Mary's County |
128 | 1 | 0 | |
|
Beantown Park Woodley Road Charles County |
127 | 1 | 0 | |
|
Greater Baltimore Temple and Community Carroll County |
127 | 0 | 0 | |
|
ST Stephens Episcopal Church Anne Arundel County |
127 | 0 | 0 | |
|
Stone Manor Frederick County |
127 | 0 | 0 | |
|
Bel Air Golf Center Harford County |
126 | 0 | 0 | |
|
Bright Center East Calvert County |
126 | 0 | 0 | |
|
Brooks United Methodist Church Calvert County |
125 | 0 | 0 | |
|
Calvary Umc Carroll County |
125 | 0 | 0 | |
|
Camp Ramblewood Pool Harford County |
125 | 1 | 0 | |
|
Chapel Hill Nursing Center Baltimore County |
125 | 1 | 1 | |
|
Cheaspeake Bay Environmental Center Queen Anne's County |
125 | 0 | 0 | |
|
CP Holdings LLC Anne Arundel County |
125 | 1 | 0 | |
|
Faith Baptist Church & School Wicomico County |
125 | 1 | 0 | |
|
Glade Valley Golf Club Frederick County |
125 | 0 | 0 | |
|
Gray-Ray Amer Legion Post #220 Calvert County |
125 | 0 | 0 | |
|
Heidi's Bakery Garrett County |
125 | 0 | 0 | |
|
Horn Point Lab. Ctr. for Env. Science Dorchester County |
125 | 2 | 0 | |
|
Morgan Chapel Umc Carroll County |
125 | 0 | 0 | |
|
Patuxent Campsites Calvert County |
125 | 0 | 0 | |
|
Pomonkey Water Company Ford Heights Charles County |
125 | 1 | 0 | |
|
Preston Autoplex Dorchester County |
125 | 1 | 1 | |
|
Rogues Harbor -Wirstins Cecil County |
125 | 0 | 0 | |
|
South County Little League Washington County |
125 | 2 | 0 | |
|
The Highlands School Harford County |
125 | 2 | 0 | |
|
The Outpost 544 Queen Anne's County |
125 | 0 | 0 | |
|
West Cecil Health Center Cecil County |
125 | 1 | 0 | |
|
Hilltop Convenience Store & Pour Decisi Frederick County |
124 | 0 | 0 | |
|
Hunting Hills Calvert County |
124 | 0 | 0 | |
|
The Wharf at Handy Point Kent County |
124 | 0 | 0 | |
|
Holy Angels Church St. Mary's County |
123 | 0 | 0 | |
|
Jacksonville Church of God, Living Hope Baltimore County |
123 | 0 | 0 | |
|
Ape Hangers Charles County |
122 | 1 | 0 | |
|
Fallston Recreation Complex Harford County |
122 | 1 | 0 | |
|
Penn-Mar Organization, Inc. Baltimore County |
122 | 1 | 0 | |
|
Saint Pauls Lutheran Church St. Mary's County |
122 | 0 | 0 | |
|
Tilghman Elementary School Talbot County |
122 | 0 | 0 | |
|
Burntwoods Church Howard County |
121 | 0 | 0 | |
|
Victory Baptist Church St. Mary's County |
121 | 0 | 0 | |
|
Woodbine Inn and Collins Inn Howard County |
121 | 0 | 0 | |
|
Braglio Farms Carroll County |
120 | 0 | 0 | |
|
Camp West Mar, American Legion Frederick County |
120 | 0 | 0 | |
|
Chesapeake Health & Fitness Club Anne Arundel County |
120 | 2 | 0 | |
|
Cook's Trailer Court (aka Garrett Tp) St. Mary's County |
120 | 1 | 1 | |
|
Cornerstone Community Church of Joppa Harford County |
120 | 2 | 0 | |
|
Crownsville Town Center Anne Arundel County |
120 | 0 | 0 |
About this data
Rules violated counts the rules a system was in violation of in the past three years, including monitoring and reporting lapses; one rule can carry several violations. Unresolved is the number of those rules currently in violation at EPA's latest data refresh.
Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Maryland records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet.