All water systems in Maryland
3,216 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
The Little Red Barn Ice Creamcafe Frederick County |
100 | 0 | 0 | |
|
Tiger Mart Exxon (mt. Airy) Frederick County |
100 | 0 | 0 | |
|
Tony's Pizza Carroll County |
100 | 0 | 0 | |
|
Tree Trekkers Frederick County |
100 | 0 | 0 | |
|
Tri-County Baptist Church Montgomery County |
100 | 0 | 0 | |
|
Tylerton Waterwork Cooperative Somerset County |
100 | 3 | 0 | |
|
Uncle Bobs Western Corral Cecil County |
100 | 0 | 0 | |
|
Whitaker Mill Andharford Gymnastics Harford County |
100 | 0 | 0 | |
|
White Plains 1 Mhp/smittys Charles County |
100 | 1 | 0 | |
|
White Sands Restaurant Calvert County |
100 | 0 | 0 | |
|
Woodlawn Family Camping Wicomico County |
100 | 0 | 0 | |
|
Wye Camp and S.e.w. Friel Queen Anne's County |
100 | 0 | 0 | |
|
Zion United Methodist Church St. Mary's County |
100 | 0 | 0 | |
|
First Baptist Church of Laplata Charles County |
99 | 0 | 0 | |
|
Severna Park Childrens Centre Anne Arundel County |
99 | 2 | 0 | |
|
The Childs Nurturing Center 1-Finksburg Carroll County |
99 | 0 | 0 | |
|
31550 Winterplace Park Wicomico County |
97 | 1 | 0 | |
|
Carrie Weedon Early Education Center Anne Arundel County |
97 | 1 | 1 | |
|
Columbia Towers Montgomery County |
97 | 0 | 0 | |
|
Libertytown Apartments Frederick County |
97 | 0 | 0 | |
|
Merry Meadows Lower Restroom Well #6 Baltimore County |
97 | 0 | 0 | |
|
Granite Mobile Home Park Baltimore County |
96 | 0 | 0 | |
|
Long Cove Marina Kent County |
96 | 1 | 0 | |
|
Maryland Line U M Church Baltimore County |
96 | 0 | 0 | |
|
R & R Estates Harford County |
96 | 1 | 0 | |
|
Worthington Manor Golf Club Frederick County |
96 | 0 | 0 | |
|
Bay Community Health West River Anne Arundel County |
95 | 0 | 0 | |
|
Hacks Point Marina Cecil County |
95 | 0 | 0 | |
|
Harbour Light Estates Community Wicomico County |
95 | 2 | 1 | |
|
Kelly Foods, Inc. Worcester County |
95 | 1 | 0 | |
|
Lyons Creek Shopping Center Calvert County |
95 | 0 | 0 | |
|
MT Carmel Animal Hospital Baltimore County |
95 | 0 | 0 | |
|
Carroll Lutheran School Carroll County |
94 | 0 | 0 | |
|
Jlh Building(comcast) Calvert County |
94 | 0 | 0 | |
|
Glenvilah Center II [12948 A-F] Montgomery County |
93 | 0 | 0 | |
|
Holtzoples/more Than Gas Emmitsburg · Frederick County |
93 | 0 | 0 | |
|
Weems Creek Nursery School Anne Arundel County |
93 | 1 | 0 | |
|
First Christian Comm. Church Annapolis Anne Arundel County |
92 | 0 | 0 | |
|
Warwick Hospitality, INC Cecil County |
92 | 2 | 0 | |
|
Big Boys Tacos St. Mary's County |
91 | 0 | 0 | |
|
Crofton Childrens Center Anne Arundel County |
91 | 0 | 0 | |
|
EL Canelos Garrett County |
91 | 0 | 0 | |
|
New Germany State Park (camping Area) Garrett County |
91 | 0 | 0 | |
|
Pine Tree Mobile Home Park Wicomico County |
91 | 2 | 0 | |
|
Shrewsbury Church Kent County |
91 | 1 | 0 | |
|
Spring Valley Charles County |
91 | 1 | 0 | |
|
Capitol KOA Campground Anne Arundel County |
90 | 0 | 0 | |
|
Chesapeake Bay Foundation Anne Arundel County |
90 | 1 | 0 | |
|
Childrens Center of Monrovia Frederick County |
90 | 0 | 0 | |
|
Conowingo Hydroelectric Station Harford County |
90 | 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.