All water systems in Maryland
3,216 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Dunkin Donuts--5075 Solomons Island Road Anne Arundel County |
1,017 | 0 | 0 | |
|
AC and T and Classic Fuels, LLC Washington County |
1,015 | 0 | 0 | |
|
Breton Bay St. Mary's County |
1,012 | 2 | 0 | |
|
Fastop #54 Calvert County |
1,010 | 0 | 0 | |
|
Welcome Center (newburg) Charles County |
1,004 | 0 | 0 | |
|
Chesapeake College Queen Anne's County |
1,001 | 1 | 0 | |
|
Gunpowder Falls ST PK Monkton Station Baltimore County |
1,001 | 0 | 0 | |
|
Gunpowder Falls ST PK Sparks Nature Ctr Baltimore County |
1,001 | 0 | 0 | |
|
Gunpowder Falls State Park Paper Mill Baltimore County |
1,001 | 0 | 0 | |
|
Crossroads Church Garrett County |
1,000 | 0 | 0 | |
|
Dunkin Donuts Carroll County |
1,000 | 0 | 0 | |
|
Goldsboro Fire Company Caroline County |
1,000 | 0 | 0 | |
|
Oregon Ridge Park Lodge Baltimore County |
1,000 | 0 | 0 | |
|
Town of Union Bridge Carroll County |
997 | 0 | 0 | |
|
Worton Kent County |
955 | 1 | 0 | |
|
Cambridge Farms Frederick County |
953 | 0 | 0 | |
|
Pine Hills Cecil County |
953 | 1 | 0 | |
|
Glenelg Country School Howard County |
950 | 3 | 0 | |
|
Johns Hopkins Bayview Medical Center Baltimore city County |
950 | 0 | 0 | |
|
Town & Country Mobile Home Park Cecil County |
950 | 1 | 0 | |
|
Swan Point Charles County |
945 | 1 | 0 | |
|
Bais Yaakov School for Girls Baltimore County |
940 | 1 | 0 | |
|
Wawa # 595 Anne Arundel County |
920 | 0 | 0 | |
|
Mollys Kent County |
915 | 1 | 0 | |
|
Prospect Bay Queen Anne's County |
913 | 0 | 0 | |
|
Sheetz INC #209 Washington County |
911 | 0 | 0 | |
|
Dunkin Donuts -Jefferson Frederick County |
908 | 0 | 0 | |
|
Seven-Eleven #22281 Harford County |
908 | 0 | 0 | |
|
Highs of Baltimore Washington County |
906 | 0 | 0 | |
|
Beantown Texaco Food -Dash in Charles County |
900 | 0 | 0 | |
|
Calvert Country & Calvert Elementary Calvert County |
900 | 0 | 0 | |
|
Holiday Mobile Estates, Inc. Anne Arundel County |
900 | 2 | 1 | |
|
Royal Farms #113 Carroll County |
900 | 0 | 0 | |
|
Mutual Elementary School Calvert County |
894 | 0 | 0 | |
|
Lord Calvert Trailer Park St. Mary's County |
892 | 1 | 0 | |
|
Cloverhill 3 Consecutive to MD0100015 Frederick County |
888 | 0 | 0 | |
|
Town of Grantsville Garrett County |
885 | 0 | 0 | |
|
Wallbangers and Harborside Worcester County |
885 | 0 | 0 | |
|
Plum Point Middle School Calvert County |
881 | 0 | 0 | |
|
Conowingo Elementary Cecil County |
874 | 0 | 0 | |
|
Stella Maris Baltimore County |
873 | 0 | 0 | |
|
Mount Washington Pediatric Hospital Baltimore city County |
870 | 0 | 0 | |
|
Southern Region Allegany Distrib. System Allegany County |
865 | 0 | 0 | |
|
Umd Rehabilitation and Orthopedic Inst. Baltimore city County |
860 | 0 | 0 | |
|
University of Maryland Medical Center Baltimore city County |
854 | 0 | 0 | |
|
Steamer Restaurant(crab Alley) Worcester County |
850 | 0 | 0 | |
|
Town of Woodsboro Frederick County |
846 | 1 | 0 | |
|
Royal Farms #145 Anne Arundel County |
826 | 0 | 0 | |
|
Key School Anne Arundel County |
820 | 1 | 0 | |
|
Bradford's Neishyahood Market St. Mary's County |
818 | 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.