Water quality for ZIP code 20657
ZIP 20657 covers Chesapeake Ranch Estates, Lusby, and Drum Point in Calvert County, Maryland, one of 12 ZIP codes in the county. 226 active public water systems serve the county; 49 had an EPA violation in the past three years.
Most likely your provider
Other community water systems in Calvert County
29 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Solomons |
3,811 | 0 | 3.1 mi | |
| White Sands |
82 | 0 | 3.4 mi | |
| Beaches Water Co-Operative |
2,000 | 0 | 5.9 mi | |
| Calvert Beach / Forest Trail |
100 | 1 | 6.5 mi | |
| Calvert Beach Decatur Street |
350 | 1 | 6.9 mi | |
| St. Leonard |
350 | 0 | 7.4 mi | |
| Western Shores |
200 | 1 | 8.3 mi | |
| Kenwood Beach |
338 | 0 | 8.8 mi | |
| Scientists Cliffs |
1,425 | 1 | 10.1 mi | |
| Pine Trailer Park |
65 | 4 | 11.3 mi | |
| Chesapeake Heights (bayside Forest) |
1,190 | 0 | 13.7 mi | |
| Calvert Mobile Home Park |
80 | 0 | 13.9 mi | |
| Prince Frederick |
4,371 | 1 | 13.9 mi | |
| B&l Mobile Home Park |
65 | 2 | 15.4 mi | |
| The Calverton School |
461 | 3 | 17.2 mi | |
| Hunting Hills |
124 | 0 | 17.3 mi | |
| Marley Run |
290 | 0 | 17.9 mi | |
| Tara Subdivision |
68 | 0 | 19.0 mi | |
| Walnut Creek |
158 | 0 | 19.5 mi | |
| Town of Chesapeake Beach |
5,000 | 1 | 22.3 mi | |
| Summit/highlands |
1,108 | 0 | 23.1 mi | |
| Town of North Beach |
3,000 | 2 | 23.2 mi | |
| Paris Oaks / Days End |
251 | 0 | 23.9 mi | |
| Tapestry North |
60 | 0 | 23.9 mi | |
| Cross Point Subdivision |
434 | 0 | 25.0 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, the county this ZIP code lies in, nearest to the ZIP code's centre 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.
ZIP code areas and town boundaries come from the U.S. Census Bureau's 2020 ZCTA 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.