All water systems in Maryland
31 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Calvert High School See 0040011 Prince Frederick · Calvert County |
1,450 | 0 | 0 | |
|
Calvert Career Center See 0040011 Prince Frederick · Calvert County |
800 | 0 | 0 | |
|
College of Southern MD Calvert Campus Calvert County |
501 | 0 | 0 | |
|
Lord Calvert Trailer Park St. Mary's County |
495 | 0 | 0 | |
|
Calvert Manor Corporation Prince George's County |
350 | 0 | 0 | |
|
Shores of Calvert Wat Assc INC Calvert County |
260 | 0 | 0 | |
|
Calvert Christian School and Calvert County |
200 | 0 | 0 | |
|
Calvert Cliffs Nuclear Camp Canoy Pool Lusby · Calvert County |
200 | 0 | 0 | |
|
Calvert Nursing Center Calvert County |
130 | 0 | 0 | |
|
Calvert Cliffs Nuclear Conference Center Calvert County |
100 | 0 | 0 | |
|
Calvert County Nursing Center Prince Frederic · Calvert County |
100 | 0 | 0 | |
|
Calvert Manor Nursing Home Cecil County |
92 | 0 | 0 | |
|
Calvertmanor Nursing Home Cecil County |
92 | 0 | 0 | |
|
Calvert Memorial Hospital Calvert County |
78 | 0 | 0 | |
|
Calvert Mobile Homes Park Calvert County |
60 | 0 | 0 | |
|
Calvert CO Nursing Center Calvert County |
50 | 0 | 0 | |
|
Calvert County Nursing Center Calvert County |
41 | 0 | 0 | |
|
Calvert Cafe Calvert County |
25 | 0 | 0 | |
|
Calvert Cliffs Nuclear Ballfield Lusby · Calvert County |
25 | 0 | 0 | |
|
Calvert Co. Boe Calvert County |
25 | 0 | 0 | |
|
Calvert County Fairground Calvert County |
25 | 0 | 0 | |
|
Calvert Elementary (1040012) Calvert County |
25 | 0 | 0 | |
|
Calvert Meats Calvert County |
25 | 0 | 0 | |
|
Calvert Memorial Hospital Calvert County |
25 | 0 | 0 | |
|
Calvert Sr. High/vo Tech. Calvert County |
25 | 0 | 0 | |
|
Lord Calvert Motel St. Mary's County |
25 | 0 | 0 | |
|
Risky Bussiness and Lord Calvert Motel St. Mary's County |
25 | 0 | 0 | |
|
Calvert Arundel Medical Calvert County |
0 | 0 | 0 | |
|
Calvert County Emergency Center Calvert County |
0 | 0 | 0 | |
|
Calvert County Jail See 0040011 Prince Frederick · Calvert County |
0 | 0 | 0 | |
|
Calvert Smiles Dentist Calvert County |
0 | 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.