All water systems in Maryland
3,216 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Big Cork Vineyards Washington County |
140 | 0 | 0 | |
|
Big Macks Kitchen and Dock Bar Talbot County |
140 | 0 | 0 | |
|
Crossroad Christian Church Calvert County |
140 | 0 | 0 | |
|
Ebenezer Umc Carroll County |
140 | 0 | 0 | |
|
Libertytown East Frederick County |
140 | 0 | 0 | |
|
Manor Tavern INC Baltimore County |
140 | 0 | 0 | |
|
Pine Hill Water Company Charles County |
140 | 1 | 0 | |
|
ST Johns Lutheran Church and School Baltimore County |
140 | 4 | 0 | |
|
St. Alphonsus Catholic Church Baltimore County |
140 | 0 | 0 | |
|
Stag Hampstead Carroll County |
140 | 1 | 0 | |
|
Crownsville Assembly Hall of Jehovah Wit Anne Arundel County |
139 | 0 | 0 | |
|
Holland Forest St. Mary's County |
139 | 1 | 0 | |
|
Trimac Water Company Forest Park Charles County |
139 | 1 | 0 | |
|
Dulany's Overlook Frederick County |
138 | 0 | 0 | |
|
Glenvilah Center I [12944 A-E] Montgomery County |
138 | 0 | 0 | |
|
T.w. Enterprize and Texs Carryout Montgomery County |
138 | 0 | 0 | |
|
Walker's Overlook Frederick County |
138 | 1 | 0 | |
|
Carroll Motor Fuel Lisbon Howard County |
137 | 0 | 0 | |
|
Jay's Latin Kitchen Anne Arundel County |
137 | 0 | 0 | |
|
Lake Somerset Campground Somerset County |
137 | 0 | 0 | |
|
The Island Inn Bar and Grill St. Mary's County |
137 | 0 | 0 | |
|
Camp Maria St. Mary's County |
135 | 0 | 0 | |
|
Herring Bay Plaza Anne Arundel County |
135 | 1 | 0 | |
|
South County Cafe Anne Arundel County |
135 | 0 | 0 | |
|
Tall Oaks Vocational School Upper Marlboro · Prince George's County |
135 | 0 | 0 | |
|
Cherry Glade Mennonite Church Garrett County |
134 | 0 | 0 | |
|
ST Paul UM Church Calvert County |
134 | 1 | 0 | |
|
Woodlawn Mobile Home Park New Cecil County |
134 | 2 | 0 | |
|
Abells Diner/ Andersons Bar St. Mary's County |
133 | 0 | 0 | |
|
Calvary Lutheran Church Howard County |
133 | 0 | 0 | |
|
Saint Marys City Visitor Center St. Mary's County |
133 | 0 | 0 | |
|
Subway Jarrettsville Harford County |
133 | 1 | 0 | |
|
Dod Purveyor Charles County |
132 | 0 | 0 | |
|
Drift Inn St. Mary's County |
132 | 0 | 0 | |
|
Friendship Community Baptist Church Anne Arundel County |
132 | 0 | 0 | |
|
Green Meadows Water Company Charles County |
132 | 0 | 0 | |
|
South Shore Church Anne Arundel County |
131 | 0 | 0 | |
|
Adf Catering and Charity Games North St. Mary's County |
130 | 0 | 0 | |
|
Barrelville Allegany County |
130 | 7 | 2 | |
|
Broadcreek Camp Spencer Harford County |
130 | 1 | 0 | |
|
Gateway Center Calvert County |
130 | 0 | 0 | |
|
Lazarus Church Carroll County |
130 | 0 | 0 | |
|
Lions Camp Merrick Charles County |
130 | 2 | 0 | |
|
Martinak State Park Caroline County |
130 | 0 | 0 | |
|
North Carroll Community School Carroll County |
130 | 0 | 0 | |
|
Pond View Farm Harford County |
130 | 0 | 0 | |
|
Waters Memorial UM Church Calvert County |
130 | 0 | 0 | |
|
Copper Hill Corporate Center Frederick County |
129 | 0 | 0 | |
|
Frying Pan Restaurant Calvert County |
129 | 0 | 0 | |
|
Ladew Topiary Gardens Harford County |
129 | 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.