All water systems in Maryland
2,202 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Grace United Methodist Church Baltimore County |
48 | 0 | 0 | |
|
Lakewood Villages Garrett County |
48 | 0 | 0 | |
|
Shepherds Spring Lodge Washington County |
48 | 0 | 0 | |
|
Oldtown VFW Post No. 9451 Allegany County |
47 | 0 | 0 | |
|
The Orenda Center Sabillasville Frederick County |
47 | 0 | 0 | |
|
A-1 Liquor and Deli Talbot County |
46 | 0 | 0 | |
|
All Faith Episcopal Church St. Mary's County |
46 | 0 | 0 | |
|
Cecil County Animal Services Cecil County |
46 | 0 | 0 | |
|
Chapel Lutheran Church Frederick County |
46 | 0 | 0 | |
|
Eline Funeral Home Carroll County |
46 | 0 | 0 | |
|
Lisbon Marathon Gas Station Howard County |
46 | 0 | 0 | |
|
A-Town Bar & Grill Baltimore County |
45 | 0 | 0 | |
|
AG Center -Co-Op Extension Office Washington County |
45 | 1 | 0 | |
|
All Smiles Dental Care Carroll County |
45 | 0 | 0 | |
|
Brothers Food Counter Washington County |
45 | 0 | 0 | |
|
Carrollton Church of God Carroll County |
45 | 0 | 0 | |
|
Countryside Christian Church Dorchester County |
45 | 1 | 1 | |
|
Cove Point Swimming Pool Park Calvert County |
45 | 0 | 0 | |
|
Dejon Vineyard Baltimore County |
45 | 0 | 0 | |
|
Emmanuel Baust Ucc Carroll County |
45 | 0 | 0 | |
|
Emmanuel U M Church Calvert County |
45 | 1 | 0 | |
|
Faith Community Bible Church Carroll County |
45 | 0 | 0 | |
|
Green Valley Animal Hospital Frederick County |
45 | 0 | 0 | |
|
Greene's Family Butcher Shop Baltimore County |
45 | 0 | 0 | |
|
Herrington Harbour North Anne Arundel County |
45 | 0 | 0 | |
|
Lifestream Church of Nazarene Charles County |
45 | 1 | 0 | |
|
Londontowne Marina Anne Arundel County |
45 | 0 | 0 | |
|
Marbury Church of God Charles County |
45 | 1 | 0 | |
|
Maryland State Police Firing Range Baltimore County |
45 | 0 | 0 | |
|
Monsignor Odwyer Retreat House Baltimore County |
45 | 0 | 0 | |
|
Mt. Union Lutheran Church Carroll County |
45 | 0 | 0 | |
|
New Market Grange #362 Frederick County |
45 | 0 | 0 | |
|
Original Laurel Assembly Anne Arundel County |
45 | 1 | 0 | |
|
Placid Harbor and Iam Educ Center St. Mary's County |
45 | 0 | 0 | |
|
S.h.a. Churchville Maintenance Shop Harford County |
45 | 0 | 0 | |
|
Scheibels Construction Calvert County |
45 | 0 | 0 | |
|
Seabreeze Restaurant St. Mary's County |
45 | 0 | 0 | |
|
Sha Hereford Shop Baltimore County |
45 | 0 | 0 | |
|
Smoke House Bbq St. Mary's County |
45 | 0 | 0 | |
|
ST Pauls Lutheran Church Baltimore County |
45 | 0 | 0 | |
|
Trinity Freewill Baptist Church Harford County |
45 | 0 | 0 | |
|
Upperco Vfc Baltimore County |
45 | 0 | 0 | |
|
West River UM Center Anne Arundel County |
45 | 0 | 0 | |
|
Bureau of Highways Cooksville Howard County |
44 | 0 | 0 | |
|
Calvary Temple Anne Arundel County |
44 | 0 | 0 | |
|
Fairview UM Church Baltimore County |
44 | 0 | 0 | |
|
Fast Eddies Pit Beef Harford County |
44 | 2 | 0 | |
|
Montessori Manor Baltimore County |
44 | 0 | 0 | |
|
Our Lady of Grace Church Baltimore County |
44 | 0 | 0 | |
|
Red Run Condos Garrett County |
44 | 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.