All water systems in Maryland
3,216 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Fairview Library Calvert County |
308 | 0 | 0 | |
|
Our Lady of the Chesapeake Anne Arundel County |
308 | 1 | 0 | |
|
Running Hares Vinyard Calvert County |
308 | 0 | 0 | |
|
The Fill'er Up/ Maryland Line Service CT Baltimore County |
308 | 0 | 0 | |
|
Wawa Mechanicsville #583 St. Mary's County |
308 | 0 | 0 | |
|
Belle Grove Grocery Allegany County |
307 | 0 | 0 | |
|
Schooley Mill Park Howard County |
307 | 0 | 0 | |
|
Washington Monument ST PK Ranger Sta Washington County |
306 | 0 | 0 | |
|
Andover Recreatiom Center Anne Arundel County |
305 | 0 | 0 | |
|
Fork Christian Church Baltimore County |
305 | 0 | 0 | |
|
Fox & Barrel Farm Cafe Howard County |
305 | 0 | 0 | |
|
Gunpowder Falls ST PK Hart-Miller Island Baltimore County |
305 | 0 | 0 | |
|
Mason Dixon Dragway Washington County |
305 | 0 | 0 | |
|
South Shore Elementary Anne Arundel County |
305 | 1 | 0 | |
|
Greenwell State Park St. Mary's County |
304 | 0 | 0 | |
|
Lake Shore Baptist Church Anne Arundel County |
304 | 0 | 0 | |
|
Mayo Beach Park Anne Arundel County |
304 | 0 | 0 | |
|
Point Lookout State Park South St. Mary's County |
304 | 0 | 0 | |
|
Sewell Funeral Home Calvert County |
304 | 0 | 0 | |
|
Walgreens #19144 Harford County |
304 | 0 | 0 | |
|
Faith Bible Church St. Mary's County |
303 | 0 | 0 | |
|
Broadcreek Camp Saffran Harford County |
302 | 0 | 0 | |
|
Cecil Park Concession Stand St. Mary's County |
301 | 0 | 0 | |
|
Chaptico Park St. Mary's County |
301 | 0 | 0 | |
|
Dorsey Park Concession Stand St. Mary's County |
301 | 0 | 0 | |
|
Fifth District Elementary Baltimore County |
301 | 0 | 0 | |
|
Friendship United Methodist Church Anne Arundel County |
301 | 0 | 0 | |
|
7 Eleven Chester-17867 Queen Anne's County |
300 | 0 | 0 | |
|
Baden Elementary Prince George's County |
300 | 3 | 2 | |
|
Bay Country Mobile Home Park Dorchester County |
300 | 2 | 0 | |
|
Benedictine School Caroline County |
300 | 3 | 0 | |
|
Calvert Manor Prince George's County |
300 | 1 | 0 | |
|
Carroll County Sports Complex Carroll County |
300 | 0 | 0 | |
|
Cedar Mobile Home Park Caroline County |
300 | 3 | 0 | |
|
Clarksville Lds Church Howard County |
300 | 0 | 0 | |
|
Coppermine Four Seasons Carroll County |
300 | 0 | 0 | |
|
Dash in Glymont Charles County |
300 | 1 | 0 | |
|
Dollar General #14009 Cecil County |
300 | 2 | 0 | |
|
Dunkin Donuts #351565 Queen Anne's County |
300 | 0 | 0 | |
|
East Wicomico Little League Complex Wicomico County |
300 | 0 | 0 | |
|
Elks Lodge 2474 Kent County |
300 | 2 | 0 | |
|
Fast Fuels Gas Station Prince George's County |
300 | 1 | 0 | |
|
Forest Hill Recreation Center Well 1 Harford County |
300 | 0 | 0 | |
|
Forest Hill Recreation Center Well 2 Harford County |
300 | 0 | 0 | |
|
Gamber & Community Fire Company Carroll County |
300 | 0 | 0 | |
|
Glenn Ellen Farm Frederick County |
300 | 0 | 0 | |
|
Grace Assembly of God Harford County |
300 | 1 | 0 | |
|
Grace Bible Chapel Cecil County |
300 | 1 | 0 | |
|
Hallowing Point Park Food Calvert County |
300 | 0 | 0 | |
|
Harriet Tubman Freedom Center Dorchester County |
300 | 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.