Revised Total Coliform Rule (RTCR) violations in Maryland
361 active public water systems in Maryland had a Revised Total Coliform Rule (RTCR) violation in the past three years, 3 of them in the latest quarter of EPA's data. What Revised Total Coliform Rule (RTCR) is and why it matters.
Systems with a Revised Total Coliform Rule (RTCR) violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
N.i.h. Animal Center Montgomery County |
150 | 2 | 0 | |
|
Pavilions Office Park Worcester County |
150 | 3 | 0 | |
|
Turkey Hill Water Company Charles County |
150 | 2 | 0 | |
|
Golden Kay Apartments Cecil County |
148 | 4 | 1 | |
|
Naval Research Lab Blossom PT (navy Fac) Charles County |
145 | 2 | 0 | |
|
Harford County 4-H Camp Dining Hall Harford County |
142 | 1 | 0 | |
|
ST Johns Lutheran Church and School Baltimore County |
140 | 4 | 0 | |
|
Herring Bay Plaza Anne Arundel County |
135 | 1 | 0 | |
|
ST Paul UM Church Calvert County |
134 | 1 | 0 | |
|
Woodlawn Mobile Home Park New Cecil County |
134 | 2 | 0 | |
|
Subway Jarrettsville Harford County |
133 | 1 | 0 | |
|
Barrelville Allegany County |
130 | 7 | 2 | |
|
Lions Camp Merrick Charles County |
130 | 2 | 0 | |
|
St. Pauls Church Kent County |
129 | 1 | 0 | |
|
Camp Ramblewood Pool Harford County |
125 | 1 | 0 | |
|
CP Holdings LLC Anne Arundel County |
125 | 1 | 0 | |
|
Horn Point Lab. Ctr. for Env. Science Dorchester County |
125 | 2 | 0 | |
|
South County Little League Washington County |
125 | 2 | 0 | |
|
Ape Hangers Charles County |
122 | 1 | 0 | |
|
Fallston Recreation Complex Harford County |
122 | 1 | 0 | |
|
Chesapeake Health & Fitness Club Anne Arundel County |
120 | 2 | 0 | |
|
Cornerstone Community Church of Joppa Harford County |
120 | 2 | 0 | |
|
Mt. Harmony United Methodist Church Calvert County |
120 | 2 | 0 | |
|
South River Marina East/high Tide Grill Anne Arundel County |
119 | 1 | 0 | |
|
Prices Groceries and Spirits Baltimore County |
117 | 1 | 0 | |
|
Childtime of Churchville/aberdeen Harford County |
115 | 3 | 0 | |
|
South Mountain Rod and Gun Washington County |
115 | 1 | 0 | |
|
Whites Ferry Store Montgomery County |
115 | 1 | 0 | |
|
Austin Plaza North Kent County |
112 | 1 | 0 | |
|
Bel Air Kingdom Hall Harford County |
112 | 2 | 0 | |
|
Pisgah United Methodist Church Charles County |
110 | 2 | 0 | |
|
The Council of Renard Court Condominium Anne Arundel County |
108 | 3 | 0 | |
|
Black Market Bakers Churchton Anne Arundel County |
107 | 2 | 0 | |
|
Odenton Sunoco Anne Arundel County |
106 | 1 | 0 | |
|
Cedar Grove United Methodist Church Anne Arundel County |
105 | 1 | 0 | |
|
Chad's Bbq Anne Arundel County |
105 | 1 | 0 | |
|
Empire Cafe Montgomery County |
105 | 2 | 0 | |
|
Rock Hall Yacht Club Kent County |
105 | 1 | 0 | |
|
Red Hot and Blue Anne Arundel County |
104 | 2 | 0 | |
|
Fawn Grove Church of the Nazarene Harford County |
103 | 1 | 0 | |
|
Gunpowder Falls ST PK Jerusalem Mill Harford County |
103 | 1 | 0 | |
|
Lapp Bakery Kent County |
103 | 2 | 0 | |
|
Wacs Hughes Lodge , Elks # 1053 Charles County |
103 | 1 | 0 | |
|
American Legion # 170 Charles County |
100 | 1 | 0 | |
|
Bodkin Park Anne Arundel County |
100 | 1 | 0 | |
|
Camp Ramblewood Dining Hall Harford County |
100 | 1 | 0 | |
|
Dover Bridge Park Caroline County |
100 | 3 | 0 | |
|
Express Lane INC Wicomico County |
100 | 1 | 0 | |
|
Horton Properties Cecil County |
100 | 1 | 0 | |
|
Inside Scoops Cecil County |
100 | 1 | 0 |
About this data
A system is counted once if any of its violations in the past three years involved Revised Total Coliform Rule (RTCR), including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Revised Total Coliform Rule (RTCR) alone.
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.