Nitrate violations in Maryland
173 active public water systems in Maryland had a Nitrate violation in the past three years, 14 of them in the latest quarter of EPA's data. What Nitrate is and why it matters.
Systems with a Nitrate violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
West Nottingham Academy Cecil County |
250 | 3 | 1 | |
|
Salisbury Church of Lds Wicomico County |
240 | 2 | 0 | |
|
The Jemicy School (lower School) Baltimore County |
240 | 3 | 0 | |
|
Hotel Charles Charles County |
218 | 2 | 0 | |
|
Forest Green Court Mobile Home Park Cecil County |
212 | 2 | 0 | |
|
The Church of Christ (4th Watch) Harford County |
201 | 2 | 0 | |
|
Saint James School Washington County |
200 | 4 | 0 | |
|
Maple Hill Mobile Estates Cecil County |
180 | 2 | 0 | |
|
Hickory Child Development,nazarene Churc Harford County |
172 | 1 | 0 | |
|
McDaniel Yacht Basin Cecil County |
170 | 1 | 0 | |
|
Ernst Market Washington County |
163 | 1 | 0 | |
|
Reeb Millwork (delmarva Sash & Door)1315 Queen Anne's County |
159 | 5 | 0 | |
|
Wee Care Best Day Care Center Carroll County |
158 | 2 | 0 | |
|
Dubs Sports Harford County |
157 | 2 | 0 | |
|
Newburg Market Charles County |
152 | 2 | 0 | |
|
Broadcreek Camp Oest Harford County |
150 | 1 | 0 | |
|
Church of Latter Day Saints Harford County |
150 | 2 | 0 | |
|
Fallston Swim Club Harford County |
150 | 2 | 0 | |
|
Goose Bay Marina Camp Ground Charles County |
150 | 2 | 0 | |
|
Roma Carry Out Jimmy's Grillie Baltimore County |
146 | 1 | 0 | |
|
Walker's Overlook Frederick County |
138 | 1 | 0 | |
|
Barrelville Allegany County |
130 | 7 | 2 | |
|
Broadcreek Camp Spencer Harford County |
130 | 1 | 0 | |
|
Lions Camp Merrick Charles County |
130 | 2 | 0 | |
|
Horn Point Lab. Ctr. for Env. Science Dorchester County |
125 | 2 | 0 | |
|
South County Little League Washington County |
125 | 2 | 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 | |
|
Childtime of Churchville/aberdeen Harford County |
115 | 3 | 0 | |
|
Bel Air Kingdom Hall Harford County |
112 | 2 | 0 | |
|
Duffys III and Bradshaw Bros Crab House Anne Arundel County |
110 | 1 | 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 | |
|
Empire Cafe Montgomery County |
105 | 2 | 0 | |
|
Red Hot and Blue Anne Arundel County |
104 | 2 | 0 | |
|
Lapp Bakery Kent County |
103 | 2 | 0 | |
|
Jarrettsville Carroll Fuel Harford County |
102 | 1 | 0 | |
|
Ceresville Mansion Frederick County |
100 | 1 | 0 | |
|
Crab Shack INC Cecil County |
100 | 1 | 0 | |
|
Hill Waterworks Cooperative Somerset County |
100 | 3 | 0 | |
|
Plumpton Park Zoo Grounds Cecil County |
100 | 1 | 0 | |
|
Plumpton Park Zoo Snack Bar Cecil County |
100 | 1 | 0 | |
|
Rhodes Point South Waterworks Somerset County |
100 | 3 | 0 | |
|
Rick's Liquors Cecil County |
100 | 2 | 0 | |
|
Scotts II Charles County |
100 | 1 | 0 | |
|
Sunshine General Store Montgomery County |
100 | 2 | 0 | |
|
The Key School Fusco Park Anne Arundel County |
100 | 1 | 0 | |
|
Tylerton Waterwork Cooperative Somerset County |
100 | 3 | 0 |
About this data
A system is counted once if any of its violations in the past three years involved Nitrate, including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Nitrate 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.