All water systems in Maryland
2,202 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Royal Farms #80, Queen Anne Queen Anne's County |
600 | 0 | 0 | |
|
Cunningham Falls Houck Area Frederick County |
577 | 0 | 0 | |
|
Catoctin Wildlife Preserve & Zoo Frederick County |
575 | 0 | 0 | |
|
New Hope 7th-Day Adventist Church Howard County |
558 | 0 | 0 | |
|
Angels Food Market Anne Arundel County |
550 | 0 | 0 | |
|
Dash in Food Store Charles County |
550 | 1 | 0 | |
|
Good to GO (funny Farm) Garrett County |
550 | 0 | 0 | |
|
St. Michaels Market Talbot County |
535 | 0 | 0 | |
|
Your Journey Child Care Howard County |
533 | 0 | 0 | |
|
Shad Landing/pocomoke River State Park Worcester County |
530 | 0 | 0 | |
|
New Life Church Calvert County |
525 | 0 | 0 | |
|
Hereford Plaza (michaels Pizza, 7-11) Baltimore County |
520 | 1 | 0 | |
|
New Life Wesleyan Church la Plata Charles County |
520 | 0 | 0 | |
|
7-Eleven #28953 and Deale Subway Anne Arundel County |
517 | 0 | 0 | |
|
Bryantown Mall Charles County |
512 | 2 | 0 | |
|
Talbot County Community Center Talbot County |
512 | 0 | 0 | |
|
Dickerson Market Montgomery County |
510 | 0 | 0 | |
|
Potomac Speedway St. Mary's County |
510 | 0 | 0 | |
|
Warehouse Cinemas Leitersburg Washington County |
510 | 0 | 0 | |
|
Bowens Grocery Calvert County |
509 | 0 | 0 | |
|
Dollar General Store Calvert County |
509 | 0 | 0 | |
|
Burger King Dunkirk Calvert County |
506 | 0 | 0 | |
|
Choptank Community Health Caroline County |
505 | 0 | 0 | |
|
7-11 Sunderland Calvert County |
504 | 0 | 0 | |
|
Emmanuel Baptist Church Calvert County |
504 | 0 | 0 | |
|
Highs Dairy Store #17 Anne Arundel County |
503 | 0 | 0 | |
|
St. Marks Church Multipurpose Harford County |
503 | 1 | 0 | |
|
Washington CO Agric Center Washington County |
503 | 1 | 0 | |
|
Sacred Heart Church St. Mary's County |
502 | 0 | 0 | |
|
Saint Georges Catholic Church St. Mary's County |
502 | 0 | 0 | |
|
Saint Marys Fairgrounds St. Mary's County |
502 | 0 | 0 | |
|
Gunpowder Falls Freeland Ncr Trail Baltimore County |
501 | 0 | 0 | |
|
Gunpowder Falls ST PK Camp Wood Baltimore County |
501 | 0 | 0 | |
|
7 Eleven (gasmart of Frederick) Frederick County |
500 | 0 | 0 | |
|
Capitol Raceway, Double DS Dogs Anne Arundel County |
500 | 1 | 0 | |
|
Christ Umc Wicomico County |
500 | 0 | 0 | |
|
Downs Memorial Park Well # 2 Anne Arundel County |
500 | 1 | 0 | |
|
Fairhaven Park-Sykesville Baseball Carroll County |
500 | 0 | 0 | |
|
Howard County Fair Main Exhibit Hall Howard County |
500 | 0 | 0 | |
|
Howard County Fairgrounds Poultry Bld Howard County |
500 | 0 | 0 | |
|
Lakeside Creamery Garrett County |
500 | 0 | 0 | |
|
Little Georges (winfield) Carroll County |
500 | 0 | 0 | |
|
Patuxent River Park Aquasco, Girl Scout Prince George's County |
500 | 0 | 0 | |
|
Ramblin Pines Campground Carroll County |
500 | 0 | 0 | |
|
Seven-Eleven -Taylorsville Carroll County |
500 | 0 | 0 | |
|
Severna Park Evangelical Presbyterian Anne Arundel County |
500 | 0 | 0 | |
|
Sunderland Village Center Calvert County |
500 | 0 | 0 | |
|
Urbana Convenience Shop (exxon) Frederick County |
500 | 0 | 0 | |
|
Winterplace Market Wicomico County |
500 | 1 | 0 | |
|
YMCA Camp Tockwogh Kent County |
500 | 1 | 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.