Maryland
Baltimore city drinking water quality
14 active public water systems serve 1,610,114 people in Baltimore city. 11 are compliant, 3 had at least one EPA violation in the past three years, 0 are designated serious violators, and 0 carry a health flag.
Community water systems
5 systems, largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
City of Baltimore |
1,600,000 | 3 | 0 | |
|
Johns Hopkins University |
2,058 | 0 | 0 | |
|
Keswick Multi-Care Center |
575 | 1 | 0 | |
|
Metropolitan of Baltimore |
414 | 0 | 0 | |
|
The Neighborhoods at St. Elizabeth |
162 | 4 | 1 |
Non-community systems (9: schools, campgrounds, workplaces, restaurants)
These systems serve places people visit rather than homes.
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Johns Hopkins Hospital |
2,000 | 0 | 0 | |
|
Johns Hopkins Bayview Medical Center |
950 | 0 | 0 | |
|
Mount Washington Pediatric Hospital |
870 | 0 | 0 | |
|
Umd Rehabilitation and Orthopedic Inst. |
860 | 0 | 0 | |
|
University of Maryland Medical Center |
854 | 0 | 0 | |
|
Ummc Midtown Campus Armory Building |
500 | 0 | 0 | |
|
Loch Raven VA Medical Center |
330 | 0 | 0 | |
|
Grace Medical Center |
325 | 0 | 0 | |
|
Manor Care Health Services Roland Park |
216 | 0 | 0 |
Inactive systems (22, no longer operating or reporting)
Kept for the record and excluded from the county totals above. Browse inactive systems.
About this data
Totals cover active systems. Systems serving more than one county are counted in each county. EPA counts the rules a system was in violation of, not the individual violations; one rule can carry several.
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.