All water systems in Maryland
2,202 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Relax Inn Charles County |
44 | 1 | 0 | |
|
Winfield Medical Center Carroll County |
44 | 0 | 0 | |
|
Dough Run ( Formerly Monkton Grille) Baltimore County |
43 | 0 | 0 | |
|
Fairview A.m.e. Church Harford County |
43 | 0 | 0 | |
|
Fort Frederick State Park Picnic Area Washington County |
43 | 0 | 0 | |
|
Lisbon UM Church Howard County |
43 | 0 | 0 | |
|
Little Orleans Grocery/ Bills Place Allegany County |
43 | 0 | 0 | |
|
Ridge Rider Well a Allegany County |
43 | 0 | 0 | |
|
The Picantillo Anne Arundel County |
43 | 1 | 0 | |
|
Calvary United Apostolic Church Calvert County |
42 | 0 | 0 | |
|
Courtneys Restaurant St. Mary's County |
42 | 0 | 0 | |
|
Davidsonville Dental Group Anne Arundel County |
42 | 0 | 0 | |
|
Djs One Stop Shop St. Mary's County |
42 | 0 | 0 | |
|
Gingerville Community Pool Anne Arundel County |
42 | 0 | 0 | |
|
Greens @ the Wisp Garrett County |
42 | 0 | 0 | |
|
Kings Court Motel Baltimore County |
42 | 0 | 0 | |
|
Kingsville Athletic Field House Baltimore County |
42 | 0 | 0 | |
|
Lexington Park Church Jesus Christ L.d.s St. Mary's County |
42 | 0 | 0 | |
|
Mapletree Campground Washington County |
42 | 0 | 0 | |
|
Mays General Store Baltimore County |
42 | 0 | 0 | |
|
Oldtown Cafe Flavor of the South Cafe Calvert County |
42 | 0 | 0 | |
|
Oldtown Volunteer Fire Department Allegany County |
42 | 0 | 0 | |
|
Shady Side Soft Serve Anne Arundel County |
42 | 0 | 0 | |
|
Susquehanna Work Force Network Cecil County |
42 | 1 | 0 | |
|
The Farmyard Freeze Baltimore County |
42 | 0 | 0 | |
|
Traditional Authentic Mexican Food Frederick County |
42 | 0 | 0 | |
|
Veloccino Bike and Coffee Baltimore County |
42 | 1 | 0 | |
|
Village Plaza Baltimore County |
42 | 0 | 0 | |
|
Williamsburg Country Kitchen Dorchester County |
42 | 0 | 0 | |
|
Wor CO Addict Council Ctr (wacs) Worcester County |
42 | 0 | 0 | |
|
Adventure Bound Camp Ground Anne Arundel County |
41 | 1 | 0 | |
|
Alice Ferguson Foundation Prince George's County |
41 | 0 | 0 | |
|
American Legion #256 Parkton Baltimore County |
41 | 0 | 0 | |
|
Brennemans Store Country Roads Store Garrett County |
41 | 0 | 0 | |
|
Christ Episcopal Church Harford County |
41 | 1 | 0 | |
|
Darlington Library Harford County |
41 | 0 | 0 | |
|
Fallston Presbyterian Church Harford County |
41 | 0 | 0 | |
|
Hutsons Lake Shore Tavern Anne Arundel County |
41 | 0 | 0 | |
|
Lakewood Condos South Garrett County |
41 | 0 | 0 | |
|
Little Meadows Campground Garrett County |
41 | 0 | 0 | |
|
Mount Calvary Umc St. Mary's County |
41 | 0 | 0 | |
|
Pinesburg Softball Complex Washington County |
41 | 0 | 0 | |
|
Sligo Adventist Camp Washington County |
41 | 0 | 0 | |
|
Smiths Marina INC Anne Arundel County |
41 | 0 | 0 | |
|
William Watters Umc Harford County |
41 | 0 | 0 | |
|
A.e. Phillips and Son Dorchester County |
40 | 0 | 0 | |
|
American Legion Post #238 Charles County |
40 | 0 | 0 | |
|
Baker Training Facility Lll Aaron Strau Allegany County |
40 | 0 | 0 | |
|
Bay Country Bakery Dorchester County |
40 | 0 | 0 | |
|
BP Subway and Royal Kabob Anne Arundel County |
40 | 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.