All water systems in Maryland
2,202 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
MD State Hwy Admin Main Office Worcester County |
84 | 0 | 0 | |
|
Subway Shop (grantsville) Garrett County |
84 | 0 | 0 | |
|
Dunkirk Fastop Calvert County |
83 | 0 | 0 | |
|
Hereford Volunteer Fire CO Baltimore County |
83 | 0 | 0 | |
|
Jerry S Place Calvert County |
83 | 0 | 0 | |
|
Kimber Meadows Washington County |
83 | 1 | 0 | |
|
Morgan Station Inn Howard County |
83 | 0 | 0 | |
|
Christ Episcopal Church St. Mary's County |
82 | 0 | 0 | |
|
Faith Assembly of God Anne Arundel County |
82 | 0 | 0 | |
|
Harford Jewish Center Harford County |
82 | 1 | 0 | |
|
Saysf Bible Church St. Mary's County |
82 | 0 | 0 | |
|
Wrights Market Wicomico County |
82 | 1 | 1 | |
|
Beckwith Church Dorchester County |
81 | 0 | 0 | |
|
Catoctin Mountain Nat. Park Jim Brown Frederick County |
81 | 0 | 0 | |
|
Grove Market Worcester County |
81 | 0 | 0 | |
|
Long Green Baptist Church Baltimore County |
81 | 0 | 0 | |
|
Ridge Country Store Baltimore County |
81 | 0 | 0 | |
|
Shepherd of the Bay Lutheran Church Calvert County |
81 | 0 | 0 | |
|
Andy Wargos Restaurant Harford County |
80 | 0 | 0 | |
|
Camp Bennett Lodge [union Mission] Montgomery County |
80 | 0 | 0 | |
|
Camp Bennett Office/[union Mission] Montgomery County |
80 | 0 | 0 | |
|
Cedar Grove Beer and Wine Montgomery County |
80 | 1 | 0 | |
|
Church of God of Prophecy Wicomico County |
80 | 0 | 0 | |
|
Crofton Medical Arts Building Anne Arundel County |
80 | 0 | 0 | |
|
Dill Dinkers Carroll County |
80 | 0 | 0 | |
|
Donaldson Funeral Home Anne Arundel County |
80 | 0 | 0 | |
|
Etchison Country Store Montgomery County |
80 | 0 | 0 | |
|
Jimmies Paddock and Captain Pells Charles County |
80 | 2 | 0 | |
|
Kriders United Church of Christ Westminster · Carroll County |
80 | 0 | 0 | |
|
Kuzzens Labor Camp Section a Somerset County |
80 | 0 | 0 | |
|
Kuzzens Labor Camp Section B Somerset County |
80 | 0 | 0 | |
|
Kuzzens Labor Camp Section D Somerset County |
80 | 0 | 0 | |
|
Lees Market Charles County |
80 | 1 | 0 | |
|
Merry Meadows Recreation Farm, LLC Well Baltimore County |
80 | 0 | 0 | |
|
Merry Meadows Recreation Farm, Well #10 Baltimore County |
80 | 0 | 0 | |
|
Merry Meadows, West Side Campground Baltimore County |
80 | 0 | 0 | |
|
Mount Carmel United Methodist Church Baltimore County |
80 | 0 | 0 | |
|
Mva Veip Queen Annes Co. Queen Anne's County |
80 | 0 | 0 | |
|
Norrisville UM Church Harford County |
80 | 1 | 0 | |
|
Oak Grove Baptist Church Harford County |
80 | 0 | 0 | |
|
Patuxent River 4-H Cabins Prince George's County |
80 | 0 | 0 | |
|
S.h.a. Centreville Queen Anne's County |
80 | 0 | 0 | |
|
ST Edmonds UM Church Calvert County |
80 | 0 | 0 | |
|
ST James Church Kent County |
80 | 0 | 0 | |
|
St.thomas Syrian Orthodox Church Carroll County |
80 | 0 | 0 | |
|
Utica District Park Frederick County |
80 | 0 | 0 | |
|
Zion Baptist Church Charles County |
80 | 1 | 0 | |
|
Merry Meadows Maint. Shed-Well#7 Baltimore County |
79 | 0 | 0 | |
|
Merry Meadows Recreation Farm,well #9. Baltimore County |
79 | 0 | 0 | |
|
Stups Garage Summit Auto Parts Frederick County |
79 | 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.