All water systems in Maryland
3,216 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Dollar General Store Calvert County |
509 | 0 | 0 | |
|
Triadelphia Ridge Elementary Howard County |
507 | 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 | |
|
Crystal Beach Manor/t&c Utility Cecil County |
500 | 0 | 0 | |
|
Downs Memorial Park Well # 2 Anne Arundel County |
500 | 1 | 0 | |
|
Epping Forest Anne Arundel County |
500 | 0 | 0 | |
|
Fairhaven Park-Sykesville Baseball Carroll County |
500 | 0 | 0 | |
|
Harford Christian School Harford County |
500 | 1 | 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 | |
|
Nantucket Point(distribution-Delaware) Worcester 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 | |
|
Riddle Farm Worcester 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 | |
|
Swan Harbour Dell Mobile Home Park Harford County |
500 | 1 | 0 | |
|
Ummc Midtown Campus Armory Building Baltimore city 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 | |
|
Gale-Bailey Elementary Charles County |
497 | 0 | 0 | |
|
Town of Sudlersville Queen Anne's County |
497 | 0 | 0 | |
|
Naval Support Facility, Stump Neck Annex Charles County |
495 | 0 | 0 | |
|
The Barn @ Pleasant Acres Calvert County |
494 | 0 | 0 | |
|
St. Peters School Charles County |
493 | 0 | 0 | |
|
Lisbon Elementary School Howard County |
492 | 0 | 0 | |
|
Great Oak Landing Marina Kent County |
490 | 0 | 0 | |
|
Dr. Thomas Higdon Elementary Charles County |
488 | 0 | 0 | |
|
Yellow Springs Elementary Frederick County |
486 | 0 | 0 | |
|
American Legion Post #29 Caroline County |
483 | 0 | 0 | |
|
Calvert Cliffs Nuclear Protected Area Calvert County |
482 | 0 | 0 | |
|
Beach Harbor Queen Anne's County |
481 | 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.