All water systems in Maryland
3,216 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Red Hill Water Company, Inc. Charles County |
200 | 1 | 0 | |
|
Reliance Mobile Home Park Dorchester County |
200 | 1 | 0 | |
|
Riverside and Food and Spirits Anne Arundel County |
200 | 0 | 0 | |
|
Rocky Gap State Park Allegany County |
200 | 1 | 0 | |
|
Saint James School Washington County |
200 | 4 | 0 | |
|
Saltwater Carroll County |
200 | 0 | 0 | |
|
Sandy Hill Family Camp Wicomico County |
200 | 0 | 0 | |
|
Sunoco of Rising Sun #7249 Cecil County |
200 | 0 | 0 | |
|
The Narrows INC Queen Anne's County |
200 | 0 | 0 | |
|
Vanessas Corner Pub (new York Jp) Carroll County |
200 | 0 | 0 | |
|
W.l. Gore at Fair Hill Cecil County |
200 | 0 | 0 | |
|
Western Shores Calvert County |
200 | 1 | 0 | |
|
White Plains Park-Concession Charles County |
200 | 0 | 0 | |
|
Winfield Ballfield Carroll County |
200 | 1 | 0 | |
|
Winfield Vol. Fire Department Carroll County |
200 | 0 | 0 | |
|
Worcester County Athletic Complex Worcester County |
200 | 0 | 0 | |
|
Primrose School Anne Arundel County |
197 | 1 | 0 | |
|
Huntingtown Plaza Shopping Center Calvert County |
196 | 0 | 0 | |
|
Lighthouse Church Harford County |
195 | 1 | 0 | |
|
Leonardtown Farm St. Mary's County |
193 | 1 | 0 | |
|
West River Yacht Harbor Anne Arundel County |
193 | 0 | 0 | |
|
Route 40 Elementary School Garrett County |
190 | 0 | 0 | |
|
Bali HI RV Park Worcester County |
188 | 1 | 0 | |
|
Catoctin Mountain Nat. Park Ike Smith Frederick County |
188 | 0 | 0 | |
|
Sandy Point State Park Marina Anne Arundel County |
188 | 1 | 0 | |
|
Southgate St. Mary's County |
188 | 1 | 0 | |
|
Granite Presbyterian Church Baltimore County |
185 | 0 | 0 | |
|
Willow Springs Golf Course Howard County |
185 | 0 | 0 | |
|
Woodland Center #3 Anne Arundel County |
185 | 0 | 0 | |
|
Edgewater Restaurant Anne Arundel County |
184 | 0 | 0 | |
|
Mariellen Park Charles County |
184 | 1 | 0 | |
|
Open Bible Christian Academy Baltimore County |
183 | 0 | 0 | |
|
Woodstock Inn Howard County |
183 | 0 | 0 | |
|
Our Ladys Church at Medleys Neck St. Mary's County |
181 | 0 | 0 | |
|
Amante Pizza and Pasta Carroll County |
180 | 0 | 0 | |
|
Boyds Presb and Elf School,camp Sunshine Montgomery County |
180 | 0 | 0 | |
|
Kuzzens Labor Camp Section C Somerset County |
180 | 0 | 0 | |
|
Maple Hill Mobile Estates Cecil County |
180 | 2 | 0 | |
|
Naylor Mill Village Mobile Home Park Wicomico County |
180 | 0 | 0 | |
|
Oak Hill Water Company, LLC Charles County |
180 | 1 | 0 | |
|
Red Barn Ranch Activity Building Carroll County |
180 | 0 | 0 | |
|
Red Barn Ranch Office and First Aid Carroll County |
180 | 0 | 0 | |
|
Shell One Stop Queen Anne's County |
180 | 0 | 0 | |
|
St. Michael's School St. Mary's County |
180 | 0 | 0 | |
|
Todd Village Mobile Home Park Carroll County |
180 | 0 | 0 | |
|
Valero (e-Z Fill Getty Shop, INC Frederick County |
180 | 0 | 0 | |
|
Faith Baptist Church Frederick County |
179 | 0 | 0 | |
|
Inn Spa at Roops Mill, New Hope Church Carroll County |
179 | 0 | 0 | |
|
Bradford Estates Frederick County |
178 | 0 | 0 | |
|
Subway Talbot County |
178 | 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.