All water systems in Maryland
2,202 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Assateague National Park North Beach Worcester County |
10,020 | 0 | 0 | |
|
Wawa INC Store#556 Worcester County |
2,520 | 0 | 0 | |
|
McDonalds Frederick County |
2,499 | 0 | 0 | |
|
Mountain Christian Church Harford County |
2,120 | 0 | 0 | |
|
Chesapeake Church Calvert County |
2,050 | 0 | 0 | |
|
Friendsville I-68 Rest Area Restroom Garrett County |
2,000 | 0 | 0 | |
|
I-70 Rest Areas (eastside and Westside) Frederick County |
2,000 | 0 | 0 | |
|
Highs Dairy Store Talbot County |
1,909 | 0 | 0 | |
|
Wawa Foods #559 Harford County |
1,823 | 0 | 0 | |
|
Fire and Rescue Center Somerset County |
1,800 | 0 | 0 | |
|
Goose Creek and Westover Food Mart Somerset County |
1,800 | 0 | 0 | |
|
Fort Smallwood Park Anne Arundel County |
1,646 | 0 | 0 | |
|
Sideling Hill State Park Exhibit RT 68 W Washington County |
1,603 | 0 | 0 | |
|
Castaways Campground Worcester County |
1,550 | 0 | 0 | |
|
Wawa #573 Calvert County |
1,516 | 0 | 0 | |
|
Royal Farms #135 Caroline County |
1,512 | 0 | 0 | |
|
7-Eleven Prince Frederick Calvert County |
1,500 | 0 | 0 | |
|
Deep Creek Lake State Park (day Use) Garrett County |
1,500 | 0 | 0 | |
|
Royal Farms #206 Anne Arundel County |
1,473 | 0 | 0 | |
|
Highs of Cooksville Howard County |
1,321 | 0 | 0 | |
|
Schucks Corner Sheetz Harford County |
1,233 | 0 | 0 | |
|
McDonalds Harford County |
1,230 | 1 | 0 | |
|
Greenbrier State Park Washington County |
1,150 | 0 | 0 | |
|
Royal Farms #87 Conowingo Cecil County |
1,122 | 0 | 0 | |
|
Royal Farms #185 Baltimore County |
1,031 | 0 | 0 | |
|
AC and T Big Pool Washington County |
1,018 | 0 | 0 | |
|
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 | |
|
Fastop #54 Calvert County |
1,010 | 0 | 0 | |
|
Welcome Center (newburg) Charles County |
1,004 | 0 | 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 | |
|
Wawa # 595 Anne Arundel County |
920 | 0 | 0 | |
|
Mollys Kent County |
915 | 1 | 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 | |
|
Royal Farms #113 Carroll County |
900 | 0 | 0 | |
|
Wallbangers and Harborside Worcester County |
885 | 0 | 0 | |
|
Steamer Restaurant(crab Alley) Worcester County |
850 | 0 | 0 | |
|
Royal Farms #145 Anne Arundel County |
826 | 0 | 0 | |
|
Bradford's Neishyahood Market St. Mary's County |
818 | 0 | 0 | |
|
Riva Trace Baptist Church Anne Arundel County |
815 | 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.