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 |
|---|---|---|---|---|
|
Warwick Hospitality, INC Cecil County |
92 | 2 | 0 | |
|
EL Rancho Mobile Home Park Washington County |
86 | 4 | 0 | |
|
Oak Grove Marina Well #1 Anne Arundel County |
85 | 1 | 0 | |
|
Pasadena Golf Center Anne Arundel County |
85 | 2 | 0 | |
|
Jimmies Paddock and Captain Pells Charles County |
80 | 2 | 0 | |
|
Wylder Hotel Tilghman Island Talbot County |
80 | 3 | 0 | |
|
Susquehanna Inn Cecil County |
79 | 1 | 0 | |
|
Ewell Waterworks Cooperative Somerset County |
75 | 2 | 0 | |
|
Redeeming Life Ministries Intl. Church Charles County |
75 | 2 | 0 | |
|
VFW Post 7687 Chesapeake City Cecil County |
75 | 2 | 0 | |
|
Carriage Country Club Kent County |
70 | 2 | 0 | |
|
State Line Baptist Church Cecil County |
70 | 2 | 0 | |
|
The Tidewater School Calvert County |
65 | 2 | 0 | |
|
Kleins Shoprite Jacksonville Baltimore County |
64 | 3 | 0 | |
|
Indian Landing Boat Club Anne Arundel County |
61 | 1 | 0 | |
|
Aztk House Anne Arundel County |
60 | 2 | 0 | |
|
Heidelberg Materials US Cement LLC Carroll County |
60 | 1 | 0 | |
|
Jimmys Corner Store Charles County |
60 | 2 | 0 | |
|
Kids Campus Early Learning Center Calvert County |
60 | 2 | 0 | |
|
Pleasant Valley Community Park Washington County |
60 | 2 | 0 | |
|
Pohanka Ford of Salisbury Wicomico County |
60 | 2 | 0 | |
|
South County Park Washington County |
60 | 1 | 0 | |
|
Subway and Village Plaza Baltimore County |
60 | 1 | 0 | |
|
Brick House of Shady Side Anne Arundel County |
59 | 1 | 0 | |
|
Merkle Wildlife Sanctuary and Visitor CT Prince George's County |
57 | 1 | 0 | |
|
The Real McCoy Dairy Creme Cecil County |
57 | 1 | 0 | |
|
Crofton Cantina Anne Arundel County |
56 | 1 | 0 | |
|
West Nottingham Presbyterian Church Cecil County |
56 | 3 | 0 | |
|
Pantry One Petroleum Cecil County |
54 | 2 | 0 | |
|
Gibson Island Shell Anne Arundel County |
52 | 2 | 0 | |
|
Quiet Waters Park Well # 3 Anne Arundel County |
52 | 2 | 0 | |
|
Harford County Airport Harford County |
50 | 3 | 0 | |
|
Jemals Bay 50 Plaza Anne Arundel County |
50 | 2 | 0 | |
|
Parkway Subdivision Water Company Charles County |
50 | 1 | 0 | |
|
Potomac Fish and Game Club Campground Washington County |
50 | 1 | 0 | |
|
Marymed LLC Ground Water Kent County |
48 | 1 | 0 | |
|
Original Laurel Assembly Anne Arundel County |
45 | 1 | 0 | |
|
Fast Eddies Pit Beef Harford County |
44 | 2 | 0 | |
|
Swann Haven Mobile Home Park Talbot County |
44 | 5 | 1 | |
|
Brick House Cove Marina Charles County |
40 | 2 | 0 | |
|
Hughesville Community Center Charles County |
40 | 2 | 0 | |
|
North East Little League Cecil County |
40 | 2 | 0 | |
|
Pleasure Cove Marina Anne Arundel County |
40 | 2 | 0 | |
|
Thunderbird Apartments Charles County |
40 | 1 | 0 | |
|
Harbor Hills Yacht Club Anne Arundel County |
36 | 2 | 0 | |
|
Bowie Church Jesus Christ Latter Day Sts Prince George's County |
35 | 2 | 0 | |
|
Burners Bar & Grill Charles County |
35 | 2 | 0 | |
|
Chesapeake Seafood INC Anne Arundel County |
35 | 2 | 0 | |
|
Renos Restaurant Anne Arundel County |
35 | 2 | 0 | |
|
Somerset CO Health Dept Somerset County |
35 | 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.