All water systems in Maryland
2,202 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
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 | |
|
Huntingtown Plaza Shopping Center Calvert County |
196 | 0 | 0 | |
|
Lighthouse Church Harford County |
195 | 1 | 0 | |
|
West River Yacht Harbor Anne Arundel County |
193 | 0 | 0 | |
|
Catoctin Mountain Nat. Park Ike Smith Frederick County |
188 | 0 | 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 | |
|
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 | |
|
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 | |
|
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 | |
|
Subway Talbot County |
178 | 0 | 0 | |
|
Tilghman Island Country Store Talbot County |
178 | 0 | 0 | |
|
Bennett Point General Store Queen Anne's County |
175 | 0 | 0 | |
|
Piney Creek Xtra Mart Queen Anne's County |
175 | 0 | 0 | |
|
Rams Head Shorehouse and Island Inn Queen Anne's County |
175 | 1 | 0 | |
|
Winfield Bible Church Carroll County |
175 | 0 | 0 | |
|
Old National Pike District Park Frederick County |
174 | 0 | 0 | |
|
Forest Park Baptist Church Charles County |
173 | 0 | 0 | |
|
Madonna House Shopping Center Harford County |
173 | 1 | 0 | |
|
Holly Hills Country Club Frederick County |
172 | 0 | 0 | |
|
Sello's Worcester County |
171 | 0 | 0 | |
|
Hog Neck Golf Course Talbot County |
170 | 0 | 0 | |
|
Jarrettsville Creamery Harford County |
170 | 1 | 0 | |
|
Ledos Pizza Howard County |
170 | 0 | 0 | |
|
Lighthouse Sound Clubhouse Worcester County |
170 | 0 | 0 | |
|
McDaniel Yacht Basin Cecil County |
170 | 1 | 0 | |
|
Papa Johns Pizza 1540 Baltimore County |
170 | 0 | 0 | |
|
Pearlstone Family Main Building Baltimore County |
170 | 0 | 0 | |
|
ST Marys Catholic Church Harford County |
167 | 0 | 0 | |
|
Popeye's Worcester County |
166 | 0 | 0 | |
|
Black Forest Tap House Harford County |
165 | 1 | 0 | |
|
Keymar Evangelical Church Carroll County |
165 | 0 | 0 | |
|
Lures Bar and Grill Anne Arundel County |
165 | 1 | 0 | |
|
Our Fathers House St. Mary's County |
165 | 0 | 0 | |
|
Skippers Pier Anne Arundel County |
165 | 0 | 0 | |
|
Breezy Point Grill Wine and Spirits Calvert County |
164 | 0 | 0 | |
|
Breezy PT Beach Club Marina Calvert County |
164 | 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.