All water systems in Maryland
3,216 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Bainbridge Elementary Cecil County |
413 | 0 | 0 | |
|
Millersville Elementary Anne Arundel County |
412 | 0 | 0 | |
|
Severna Park Racquet & Fitness Club Anne Arundel County |
412 | 0 | 0 | |
|
Grace Christian Academy Charles County |
410 | 2 | 1 | |
|
Highs of Glenelg Howard County |
409 | 0 | 0 | |
|
Kings Landing Pool Calvert County |
408 | 0 | 0 | |
|
Results Fitness Owings Calvert County |
408 | 0 | 0 | |
|
Woodberry Crossing Baltimore County |
408 | 0 | 0 | |
|
Bethel Way of the Cross (newer Bldg) Calvert County |
406 | 0 | 0 | |
|
EZ Quick Food Marketand Dunkin Donuts Harford County |
406 | 0 | 0 | |
|
Hollywood Volunteer Fire Hall St. Mary's County |
406 | 0 | 0 | |
|
Quiet Waters Park Wells # 1 and # 2 Anne Arundel County |
406 | 0 | 0 | |
|
Easton Exxon Talbot County |
404 | 0 | 0 | |
|
Dollar General Street #14890 Harford County |
403 | 0 | 0 | |
|
Seven Eleven # 20835 Mechanicsville St. Mary's County |
403 | 0 | 0 | |
|
Coll. of So. MD Trades & Energy Training Charles County |
402 | 1 | 0 | |
|
Our Lady of the Wayside Church St. Mary's County |
402 | 0 | 0 | |
|
Saint Francis Xavier Church St. Mary's County |
402 | 0 | 0 | |
|
Benjamins Village/homestead M.h.p. Cecil County |
400 | 2 | 0 | |
|
Bfs Foods Garrett County |
400 | 0 | 0 | |
|
Carpenters Point Water Co. Cecil County |
400 | 0 | 0 | |
|
Church of Jesus Christ of Lds MT Airy Carroll County |
400 | 0 | 0 | |
|
Crown Sport Center Wicomico County |
400 | 0 | 0 | |
|
Dollar General #14452 Anne Arundel County |
400 | 0 | 0 | |
|
Edgeley Grove Park Annies Play Ground Harford County |
400 | 0 | 0 | |
|
Green Meadows Cultural Events Frederick County |
400 | 0 | 0 | |
|
Green Meadows Petting Farm Frederick County |
400 | 0 | 0 | |
|
Indian Creek Upper/middle School Anne Arundel County |
400 | 0 | 0 | |
|
Keymar Convenience Carroll County |
400 | 0 | 0 | |
|
Perdue Farms Inc. Feed Mill Wicomico County |
400 | 0 | 0 | |
|
Perdue Farms Inc. Main Office Wicomico County |
400 | 0 | 0 | |
|
Royal Farm Store #95 Harford County |
400 | 0 | 0 | |
|
Royal Farms #208 Queen Anne's County |
400 | 0 | 0 | |
|
Royal Farms Kingstown #18 Queen Anne's County |
400 | 0 | 0 | |
|
Ruhlman Brewery, LLC Carroll County |
400 | 0 | 0 | |
|
Smokey Glen Farm Picnic Pavillion Montgomery County |
400 | 1 | 0 | |
|
Smokey Glen Farm Grove Area Montgomery County |
400 | 0 | 0 | |
|
Somerset County Intermediate School Somerset County |
400 | 1 | 1 | |
|
Somerset County Technical High School Somerset County |
400 | 2 | 1 | |
|
Town of East New Market Dorchester County |
400 | 0 | 0 | |
|
Traceys Landing Elementary Anne Arundel County |
400 | 1 | 0 | |
|
Tuckahoe ST Park (lake) Caroline County |
400 | 0 | 0 | |
|
Valley Brook Swim Club Harford County |
400 | 0 | 0 | |
|
Stoney Chase/ Rock Creek M.h.p.s Cecil County |
396 | 1 | 0 | |
|
Caroline Acres Mobile Home Park Caroline County |
395 | 4 | 0 | |
|
Northrop Grumman Undersea Systems Anne Arundel County |
395 | 1 | 0 | |
|
Steeplechase Waterworks Wicomico County |
395 | 0 | 0 | |
|
Tolchester Marina Inc. Kent County |
395 | 1 | 0 | |
|
Kingsville Elementary School Baltimore County |
391 | 0 | 0 | |
|
Bonnie Brook Dorchester County |
390 | 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.