All water systems in Maryland
3,216 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Maryland Environmental Service Anne Arundel County |
152 | 0 | 0 | |
|
Newburg Market Charles County |
152 | 2 | 0 | |
|
North Harford Baptist Church Harford County |
152 | 0 | 0 | |
|
Shell Oil Co(mt. Airy Shell) Frederick County |
152 | 0 | 0 | |
|
Slate Farm Whiteford Harford County |
152 | 0 | 0 | |
|
Jarrettsville Fire CO Harford County |
151 | 1 | 0 | |
|
Saint Peter Claver St. Mary's County |
151 | 1 | 0 | |
|
ST Matthews Umc Anne Arundel County |
151 | 0 | 0 | |
|
5 West Cafe Frederick County |
150 | 0 | 0 | |
|
Adams Ribs (of Calvert County) Calvert County |
150 | 0 | 0 | |
|
Briddletown Distribution System Worcester County |
150 | 0 | 0 | |
|
Broadcreek Camp Oest Harford County |
150 | 1 | 0 | |
|
Brown Cleary Building (calvert Animal) Calvert County |
150 | 0 | 0 | |
|
Calhoon M.e.b.a. School Talbot County |
150 | 1 | 0 | |
|
Camp Habonim Moshava Harford County |
150 | 0 | 0 | |
|
Camp Pecometh Dining Hall Queen Anne's County |
150 | 0 | 0 | |
|
Camp Pecometh Grove Queen Anne's County |
150 | 0 | 0 | |
|
Cascade Lake Splash Pad Carroll County |
150 | 0 | 0 | |
|
Church of Latter Day Saints Harford County |
150 | 2 | 0 | |
|
Churchville Rec Center-Level Road Harford County |
150 | 0 | 0 | |
|
Concord Estates Mobile Home Park Frederick County |
150 | 1 | 1 | |
|
Coppermine Sportsmans Hall Roller Rink Baltimore County |
150 | 0 | 0 | |
|
Cross Roads Market Wicomico County |
150 | 1 | 0 | |
|
Darlington Mobile Home Park Harford County |
150 | 0 | 0 | |
|
Deer Park Sportsmen's Club Garrett County |
150 | 0 | 0 | |
|
Delauter and Sons Frederick County |
150 | 0 | 0 | |
|
Dixon Auction House Main Well Queen Anne's County |
150 | 0 | 0 | |
|
Dollar General #18012 -Westover Somerset County |
150 | 0 | 0 | |
|
Dollar General #21871-Marian Somerset County |
150 | 0 | 0 | |
|
Dollar General #23015 Somerset County |
150 | 0 | 0 | |
|
Dollar General (no 18319) Cecil County |
150 | 0 | 0 | |
|
Dollar General Friendsville Garrett County |
150 | 0 | 0 | |
|
DU Mar Estates Water Company Charles County |
150 | 2 | 1 | |
|
Duck Neck Campground D Section Queen Anne's County |
150 | 0 | 0 | |
|
Duck Neck Campground Little Bath House Queen Anne's County |
150 | 0 | 0 | |
|
Duck Neck Campground Store and Pool Queen Anne's County |
150 | 0 | 0 | |
|
Duck Neck Campground Big Bath House Queen Anne's County |
150 | 0 | 0 | |
|
Duck Neck Campground K Section Queen Anne's County |
150 | 0 | 0 | |
|
Duck Neck Campground M Section Queen Anne's County |
150 | 0 | 0 | |
|
Duffy Creek Marina Cecil County |
150 | 0 | 0 | |
|
Fallston Swim Club Harford County |
150 | 2 | 0 | |
|
Finksburg Plaza Shopping Center Carroll County |
150 | 0 | 0 | |
|
Forest Hill Nature Preschool & Childcare Harford County |
150 | 2 | 0 | |
|
Frederick Christian Academy Frederick County |
150 | 0 | 0 | |
|
Gateway Market and Candyland Frederick County |
150 | 0 | 0 | |
|
Goose Bay Marina Camp Ground Charles County |
150 | 2 | 0 | |
|
Gorman Garrett County |
150 | 0 | 0 | |
|
Gunston Day School Queen Anne's County |
150 | 1 | 0 | |
|
Hampstead Crown (citgo) Carroll County |
150 | 0 | 0 | |
|
Hampstead Lions Baseball Fields Carroll County |
150 | 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.