All water systems in Maryland
3,216 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Finksburg Exxon Carroll County |
162 | 0 | 0 | |
|
Rocks State Park Hills Picinic Grove Harford County |
162 | 0 | 0 | |
|
The Neighborhoods at St. Elizabeth Baltimore city County |
162 | 4 | 1 | |
|
Patuxent Hall (king Landing Park) Calvert County |
161 | 0 | 0 | |
|
Alamo Court Motel Worcester County |
160 | 0 | 0 | |
|
Baldwin Memorial U.m. Church, Day Care Anne Arundel County |
160 | 0 | 0 | |
|
Bayside Bull Anne Arundel County |
160 | 0 | 0 | |
|
Capt. Leonards Seafood Market St. Mary's County |
160 | 0 | 0 | |
|
New Hope Orthodox Presbyterian Church Frederick County |
160 | 0 | 0 | |
|
New Midway Volunteer Fire Department Frederick County |
160 | 0 | 0 | |
|
Pealstone Center-Pool Area Baltimore County |
160 | 0 | 0 | |
|
Pine Springs MHP Queen Anne's County |
160 | 1 | 0 | |
|
ST Peters Church and Office Bldngg Frederick County |
160 | 0 | 0 | |
|
Venue Bouchon Carroll County |
160 | 0 | 0 | |
|
Chesapeake Estates Mobile Home Park Cecil County |
159 | 1 | 0 | |
|
Reeb Millwork (delmarva Sash & Door)1315 Queen Anne's County |
159 | 5 | 0 | |
|
Richards Fish and Crabs-New Location Harford County |
159 | 0 | 0 | |
|
Severna Park Lanes Anne Arundel County |
159 | 0 | 0 | |
|
Calvert Co. Industrial Park Calvert County |
158 | 1 | 0 | |
|
Hereford United Methodist Church Baltimore County |
158 | 0 | 0 | |
|
Walnut Creek Calvert County |
158 | 0 | 0 | |
|
Wee Care Best Day Care Center Carroll County |
158 | 2 | 0 | |
|
Dubs Sports Harford County |
157 | 2 | 0 | |
|
Lai Baptist Church Howard County |
157 | 0 | 0 | |
|
Resurrection of Our Lord Roman Catholic Anne Arundel County |
157 | 0 | 0 | |
|
Fallston Shopping Center Harford County |
156 | 0 | 0 | |
|
Highs #34 Harford County |
156 | 0 | 0 | |
|
Loch Raven Fishing Center Baltimore County |
156 | 0 | 0 | |
|
Town of Henderson Caroline County |
156 | 4 | 1 | |
|
Amalfi Coast Italian Restaurant(rustico) Queen Anne's County |
155 | 0 | 0 | |
|
Braglio Farms Baltimore County |
155 | 0 | 0 | |
|
Dunkirk Baptist Church Calvert County |
155 | 0 | 0 | |
|
Inverness Brewing, LLC Baltimore County |
155 | 0 | 0 | |
|
Mater Amoris Montessori School Montgomery County |
155 | 1 | 0 | |
|
Middleham and ST Peters Parish Calvert County |
155 | 0 | 0 | |
|
Pirates Cove INC Anne Arundel County |
155 | 0 | 0 | |
|
Stonewall Day Care Center #2 Harford County |
155 | 0 | 0 | |
|
Bay Ridge Marina Clubhouse Anne Arundel County |
154 | 0 | 0 | |
|
Bear Creek Bbq St. Mary's County |
154 | 0 | 0 | |
|
Big 5 Anne Arundel County |
154 | 0 | 0 | |
|
Brome Howard Inn St. Mary's County |
154 | 0 | 0 | |
|
Grace Pointe Church of the Nazarene Anne Arundel County |
154 | 1 | 0 | |
|
Highs #86 Harford County |
154 | 0 | 0 | |
|
Sweeties Washington County |
154 | 0 | 0 | |
|
Tools Bar St. Mary's County |
154 | 0 | 0 | |
|
Fellowship Chapel Harford County |
153 | 0 | 0 | |
|
Saint Clements Island-Pot. River Museum St. Mary's County |
153 | 0 | 0 | |
|
Swan Harbor Farm Harford County |
153 | 1 | 0 | |
|
Deal Island School Somerset County |
152 | 1 | 1 | |
|
Eastern Shore Bible Church Kent County |
152 | 1 | 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.