All water systems in Maryland
3,216 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Tilghman Island Country Store Talbot County |
178 | 0 | 0 | |
|
Montessori Intl. Childrens House Anne Arundel County |
177 | 0 | 0 | |
|
Wolfsville Elementary Frederick County |
177 | 0 | 0 | |
|
Bennett Point General Store Queen Anne's County |
175 | 0 | 0 | |
|
Brook Lane Health Services Washington County |
175 | 1 | 0 | |
|
College of So. MD Health Sciences Center Charles County |
175 | 0 | 0 | |
|
I-97 Office Complex Anne Arundel County |
175 | 1 | 0 | |
|
Langley Mobile Home Park St. Mary's County |
175 | 2 | 0 | |
|
Mount Carmel Woods Charles County |
175 | 1 | 0 | |
|
Nvent Epg Millington 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 | |
|
UM Capital Region Surgery Center Prince George's County |
175 | 0 | 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 | |
|
Hickory Child Development,nazarene Churc Harford County |
172 | 1 | 0 | |
|
Holly Hills Country Club Frederick County |
172 | 0 | 0 | |
|
New Midway Elementary Frederick County |
172 | 1 | 0 | |
|
Sello's Worcester County |
171 | 0 | 0 | |
|
Braemar Condos Distribution Worcester County |
170 | 1 | 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 | |
|
Newtown Village Charles County |
170 | 1 | 0 | |
|
Papa Johns Pizza 1540 Baltimore County |
170 | 0 | 0 | |
|
Pearlstone Family Main Building Baltimore County |
170 | 0 | 0 | |
|
Villas at Cattail Creek Howard County |
170 | 1 | 0 | |
|
Butler School Montgomery County |
169 | 0 | 0 | |
|
King & Kennedy St. Mary's County |
169 | 1 | 0 | |
|
ST Marys Catholic Church Harford County |
167 | 0 | 0 | |
|
North Bay Adventure Camp Cecil County |
166 | 0 | 0 | |
|
Popeye's Worcester County |
166 | 0 | 0 | |
|
Black Forest Tap House Harford County |
165 | 1 | 0 | |
|
Highland Community Asc./child. Cntr. N. 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 | |
|
Walstons Mobile Home Park Wicomico County |
165 | 1 | 0 | |
|
Breezy Point Grill Wine and Spirits Calvert County |
164 | 0 | 0 | |
|
Breezy PT Beach Club Marina Calvert County |
164 | 0 | 0 | |
|
Bark Hill Bible Church Carroll County |
163 | 0 | 0 | |
|
Ernst Market Washington County |
163 | 1 | 0 | |
|
Grossnickle Church of the Brethren Frederick County |
163 | 0 | 0 | |
|
Odenton Commerce Center Anne Arundel County |
163 | 1 | 0 | |
|
Church of Latter Day Saints Calvert County |
162 | 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.