All water systems in Maryland
3,216 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Harford Center Inc. Harford County |
150 | 0 | 0 | |
|
Herrington Harbor Marina South Well#2 Anne Arundel County |
150 | 0 | 0 | |
|
Immanuel UM Church Queen Anne's County |
150 | 0 | 0 | |
|
John's Corner Garrett County |
150 | 0 | 0 | |
|
Jonestown Water System Caroline County |
150 | 1 | 0 | |
|
Kids Villa Learning Center LLC Frederick County |
150 | 0 | 0 | |
|
Libertytown Shopping Center Frederick County |
150 | 0 | 0 | |
|
Minary's Dream Alliance, INC Kent County |
150 | 1 | 0 | |
|
Mount Pleasant Water Co., Inc. St. Mary's County |
150 | 2 | 0 | |
|
Mountain Manor Treatment Center Frederick County |
150 | 0 | 0 | |
|
MT Hope Community Center Calvert County |
150 | 0 | 0 | |
|
N.i.h. Animal Center Montgomery County |
150 | 2 | 0 | |
|
Oak Ridge Mobile Home Park Wicomico County |
150 | 0 | 0 | |
|
P. B. Dye Golf Club Frederick County |
150 | 0 | 0 | |
|
Pavilions Office Park Worcester County |
150 | 3 | 0 | |
|
Pleasant Hill Store Cecil County |
150 | 0 | 0 | |
|
Pleasant Valley Carroll County |
150 | 0 | 0 | |
|
Pomfret Estates Utilco, Inc. Charles County |
150 | 1 | 0 | |
|
Rio Vista Plaza Mobile Home Park Anne Arundel County |
150 | 2 | 1 | |
|
River Inn @ Rolphs Wharf/sand Bar Queen Anne's County |
150 | 0 | 0 | |
|
River Valley Ranch Junior Ranch Carroll County |
150 | 0 | 0 | |
|
Riverview Mobile Home Park Worcester County |
150 | 1 | 0 | |
|
Rockbrook Village Mobile Home Park Carroll County |
150 | 0 | 0 | |
|
ST Catherines Church Hall Charles County |
150 | 0 | 0 | |
|
ST Pauls Lutheran Church and School Baltimore County |
150 | 3 | 0 | |
|
Tidewater Direct LLC Queen Anne's County |
150 | 1 | 0 | |
|
Turkey Hill Water Company Charles County |
150 | 2 | 0 | |
|
Two Rivers Yacht Basin Cecil County |
150 | 0 | 0 | |
|
Utica District Park 2 Frederick County |
150 | 0 | 0 | |
|
VFW Post 7464 Grasonville Queen Anne's County |
150 | 0 | 0 | |
|
Vintage Frederick County |
150 | 0 | 0 | |
|
Wesley Temple Church Wicomico County |
150 | 0 | 0 | |
|
Western Regional Park Howard County |
150 | 0 | 0 | |
|
Western Regional Park Pavilion Well Howard County |
150 | 0 | 0 | |
|
White Marlin Mall & Outlets Ocean City Worcester County |
150 | 1 | 0 | |
|
Woodbine Village Mobile Home Park Carroll County |
150 | 0 | 0 | |
|
Golden Kay Apartments Cecil County |
148 | 4 | 1 | |
|
Holy Family Catholic Community Frederick County |
147 | 0 | 0 | |
|
Roma Carry Out Jimmy's Grillie Baltimore County |
146 | 1 | 0 | |
|
Duffers Club/piney Branch Golf Club Baltimore County |
145 | 0 | 0 | |
|
Kingsville Plaza Baltimore County |
145 | 0 | 0 | |
|
Life Point Church Baltimore County |
145 | 0 | 0 | |
|
Naval Research Lab Blossom PT (navy Fac) Charles County |
145 | 2 | 0 | |
|
Prigel Family Creamery Baltimore County |
145 | 0 | 0 | |
|
Smallwood State Park Concession Area W7 Charles County |
145 | 0 | 0 | |
|
Sunmed Growers Cecil County |
145 | 1 | 0 | |
|
The Summit School Anne Arundel County |
145 | 1 | 0 | |
|
Second District Vol. Fire Dept. & Rescue St. Mary's County |
144 | 0 | 0 | |
|
Harford County 4-H Camp Dining Hall Harford County |
142 | 1 | 0 | |
|
Rocks State Park Rock Ridge Area Harford County |
141 | 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.