Water quality in Prince Frederick, Maryland
Prince Frederick is in Calvert County. 226 active public water systems serve the county; 49 had an EPA violation in the past three years.
Most likely your provider
Your location is within the outer bounds of this system's EPA service area.
Other community water systems in Calvert County
29 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| B&l Mobile Home Park |
65 | 2 | 1.6 mi | |
| Pine Trailer Park |
65 | 4 | 2.5 mi | |
| The Calverton School |
461 | 3 | 3.5 mi | |
| Chesapeake Heights (bayside Forest) |
1,190 | 0 | 3.6 mi | |
| Hunting Hills |
124 | 0 | 3.6 mi | |
| Calvert Mobile Home Park |
80 | 0 | 4.0 mi | |
| Scientists Cliffs |
1,425 | 1 | 4.5 mi | |
| Marley Run |
290 | 0 | 4.6 mi | |
| Kenwood Beach |
338 | 0 | 5.6 mi | |
| Tara Subdivision |
68 | 0 | 5.6 mi | |
| Western Shores |
200 | 1 | 6.0 mi | |
| Walnut Creek |
158 | 0 | 6.0 mi | |
| St. Leonard |
350 | 0 | 6.5 mi | |
| Calvert Beach Decatur Street |
350 | 1 | 7.2 mi | |
| Calvert Beach / Forest Trail |
100 | 1 | 7.7 mi | |
| Beaches Water Co-Operative |
2,000 | 0 | 8.2 mi | |
| White Sands |
82 | 0 | 10.5 mi | |
| Tapestry North |
60 | 0 | 10.5 mi | |
| Town of Chesapeake Beach |
5,000 | 1 | 10.5 mi | |
| Summit/highlands |
1,108 | 0 | 11.2 mi | |
| Paris Oaks / Days End |
251 | 0 | 11.7 mi | |
| Town of North Beach |
3,000 | 2 | 11.7 mi | |
| Cross Point Subdivision |
434 | 0 | 12.0 mi | |
| Lakewood |
203 | 0 | 13.7 mi | |
| Regency Manor Mobile Home Park |
224 | 3 | 14.0 mi |
Non-community systems in Calvert County (196: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
About this data
Water systems are matched to Calvert County, nearest to Prince Frederick first. Your exact provider depends on your address and connection; the largest community water system in a county is usually the city or town utility. Distances are measured to the centre of the service area EPA publishes for the system or, for systems without one, to the centre of the first town EPA lists the system as serving, from Census Bureau place files.
Town locations and ZIP code areas come from U.S. Census Bureau 2020 files.
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. Retrieved from ECHO on Oct 11, 2026.