Water quality for ZIP code 21782
ZIP 21782 covers Mercersville, Dargan, Sharpsburg, and Antietam in Washington County, Maryland, one of 18 ZIP codes in the county. 91 active public water systems serve the county; 34 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 Washington County
19 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Elk Ridge Lake |
120 | 0 | 4.6 mi | |
| Boonsboro Keedysville |
4,250 | 0 | 6.1 mi | |
| Woodland Trailer Park |
65 | 0 | 6.4 mi | |
| Saint James School |
200 | 4 | 8.1 mi | |
| Fahrney-Keedy Senior Living Community |
250 | 3 | 8.8 mi | |
| Sandy Hook |
220 | 1 | 9.5 mi | |
| EL Rancho Mobile Home Park |
86 | 4 | 9.9 mi | |
| Town of Williamsport Distribution System |
2,400 | 1 | 10.1 mi | |
| Town of Funkstown Distribution System |
1,300 | 0 | 10.9 mi | |
| Lakeside Village |
1,575 | 1 | 11.5 mi | |
| Mount Aetna |
688 | 0 | 12.5 mi | |
| City of Hagerstown |
92,200 | 0 | 12.8 mi | |
| Deer Lodge Mobile Home Park |
87 | 3 | 14.1 mi | |
| Cedar Ridge Children's Home & School |
45 | 1 | 14.3 mi | |
| Town of Clear Spring |
455 | 1 | 16.7 mi | |
| Town of Smithsburg Distribution System |
2,500 | 0 | 17.0 mi | |
| Brook Lane Health Services |
175 | 1 | 17.2 mi | |
| Highfield |
1,141 | 0 | 22.5 mi | |
| Town of Hancock |
1,921 | 2 | 28.0 mi |
Non-community systems in Washington County (71: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
About this data
Water systems are matched to Washington 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.