All water systems in Maryland
2,202 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Dunkirk Animal Hospital Calvert County |
38 | 0 | 0 | |
|
Fishermans Haven Condo Worcester County |
38 | 0 | 0 | |
|
Maryland Central Korean Baptist Anne Arundel County |
38 | 0 | 0 | |
|
Maryland Yacht Club INC Anne Arundel County |
38 | 0 | 0 | |
|
Northern Police Precinct & Library Harford County |
38 | 0 | 0 | |
|
Ocean City Airport Worcester County |
38 | 0 | 0 | |
|
Pennys Tavern and Bbq Pit Charles County |
38 | 0 | 0 | |
|
Shops at South River Anne Arundel County |
38 | 1 | 0 | |
|
Bel Air Moose Lodge #1952 Harford County |
37 | 0 | 0 | |
|
Dayspring Church Wellspring Well Montgomery County |
37 | 0 | 0 | |
|
Fox Valley Swimming Pool Howard County |
37 | 0 | 0 | |
|
Gray and Sons INC Baltimore County |
37 | 0 | 0 | |
|
Gunpowder Baptist Church Baltimore County |
37 | 0 | 0 | |
|
Heavy Hitters Bar and Grill St. Mary's County |
37 | 0 | 0 | |
|
Merry Meadows Over the Hill Campsites Baltimore County |
37 | 0 | 0 | |
|
Old School Tavern Harford County |
37 | 0 | 0 | |
|
Saint Georges Episcopal Church St. Mary's County |
37 | 0 | 0 | |
|
Willow Oaks, LLC Frederick County |
37 | 0 | 0 | |
|
Auto Emissions Center , Veip Calvert County |
36 | 0 | 0 | |
|
Baymart Deli St. Mary's County |
36 | 0 | 0 | |
|
Fastop #56 Calvert County |
36 | 0 | 0 | |
|
Fork United Methodist Church Baltimore County |
36 | 0 | 0 | |
|
Glen Cove Marina Harford County |
36 | 0 | 0 | |
|
Harbor Hills Yacht Club Anne Arundel County |
36 | 2 | 0 | |
|
Lighthouse Christian--Upper Campus Wicomico County |
36 | 0 | 0 | |
|
Lower Shore YMCA Cabins Worcester County |
36 | 0 | 0 | |
|
Oral & Facial Surgery Washington County |
36 | 0 | 0 | |
|
Savage River Lodge Cabins Garrett County |
36 | 0 | 0 | |
|
Spinnakers and PT Lookout Marina St. Mary's County |
36 | 0 | 0 | |
|
The Athlete Factory /extra Innings Frederick County |
36 | 0 | 0 | |
|
Third Base Grocery St. Mary's County |
36 | 0 | 0 | |
|
Ventnor Marine Services INC Anne Arundel County |
36 | 0 | 0 | |
|
A and B Lottery and Liquor St. Mary's County |
35 | 0 | 0 | |
|
Allegany Camps-Lll Aaron Straus Allegany County |
35 | 0 | 0 | |
|
Bean Rush Cafe Anne Arundel County |
35 | 0 | 0 | |
|
Bowie Church Jesus Christ Latter Day Sts Prince George's County |
35 | 2 | 0 | |
|
Brampton Bed and Breakfast Kent County |
35 | 0 | 0 | |
|
Buddy's on the Bay at Lowes Wharf Talbot County |
35 | 0 | 0 | |
|
Burners Bar & Grill Charles County |
35 | 2 | 0 | |
|
Cedar Meadows Rod and Gun Club Dorchester County |
35 | 0 | 0 | |
|
Chesapeake Seafood INC Anne Arundel County |
35 | 2 | 0 | |
|
Comfort Inn Grantsville Garrett County |
35 | 0 | 0 | |
|
Dorchester Co. Highway Department Dorchester County |
35 | 0 | 0 | |
|
Downs Memorial Park Well # 1 Visitor Ctr Anne Arundel County |
35 | 0 | 0 | |
|
Downs Memorial Park Well 3 Anne Arundel County |
35 | 1 | 0 | |
|
Dublin Elementary Rec Center Harford County |
35 | 0 | 0 | |
|
Fairview Marina Anne Arundel County |
35 | 0 | 0 | |
|
Faith United Church of Christ Frederick County |
35 | 0 | 0 | |
|
Friendsville I-68 Rest Area Info Bldg Garrett County |
35 | 0 | 0 | |
|
Galesville Memorial Hall Anne Arundel County |
35 | 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.