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 |
|---|---|---|---|---|
|
Midtown Waterworks Cooperative Somerset County |
34 | 3 | 0 | |
|
Larrys Tavern Anne Arundel County |
32 | 1 | 0 | |
|
Our House Job Training Center for Youth Montgomery County |
30 | 5 | 1 | |
|
Waldorf Moose Lodge # 1709 Charles County |
30 | 2 | 0 | |
|
Woodland Center #2 Anne Arundel County |
30 | 2 | 0 | |
|
Point Pleasant Beach Tavern Anne Arundel County |
29 | 2 | 0 | |
|
Dollar General #21451 Cecil County |
28 | 2 | 0 | |
|
Cecil County Dragway Cecil County |
27 | 2 | 0 | |
|
Fraternal Order of Police Lodge #24 Charles County |
27 | 2 | 0 | |
|
Sassafras Harbor Marina Cecil County |
27 | 1 | 0 | |
|
Taylors Mobile Home Park Caroline County |
27 | 6 | 1 | |
|
Fairwood Swim Club Anne Arundel County |
26 | 1 | 0 | |
|
Baltimore County Animal Services Baltimore County |
25 | 1 | 0 | |
|
Bar T Ranch Montgomery County |
25 | 2 | 0 | |
|
Bayview Water Company Talbot County |
25 | 1 | 0 | |
|
Bell Manor Progr Girl Scouts Cecil County |
25 | 1 | 0 | |
|
Chesapeake Gas and Deli and Eagles Nest Cecil County |
25 | 1 | 0 | |
|
Dollar General #20720 Cecil County |
25 | 2 | 0 | |
|
Galestown Community Center Dorchester County |
25 | 1 | 0 | |
|
Kaufmanns Office Building Anne Arundel County |
25 | 4 | 0 | |
|
Phils Place Charles County |
25 | 2 | 0 | |
|
Sailing Associates Cecil County |
25 | 2 | 0 | |
|
Thomas Stone National Historic Site Charles County |
25 | 1 | 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.