Water quality for ZIP code 21784
ZIP 21784 covers Eldersburg and Sykesville in Carroll County, Maryland, one of 9 ZIP codes in the county. 224 active public water systems serve the county; 25 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 Carroll County
23 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Springfield Hospital Distribution |
1,500 | 2 | 1.5 mi | |
| Gaither Manor Apartments |
450 | 1 | 2.4 mi | |
| Lakeview MHP LLC |
76 | 2 | 4.2 mi | |
| Woodbine Village Mobile Home Park |
150 | 0 | 4.4 mi | |
| Taylorsville Mhc, LLC |
38 | 0 | 7.2 mi | |
| Reservoir Trailer Park |
79 | 0 | 7.6 mi | |
| Hillandale Mobile Home Park |
220 | 1 | 8.2 mi | |
| Todd Village Mobile Home Park |
180 | 0 | 8.3 mi | |
| Sullivans Mobile Home Park Community |
70 | 0 | 8.8 mi | |
| Twin Arch Mobile Home Park |
50 | 0 | 9.2 mi | |
| Mt. Airy Nursing & Rehab |
104 | 0 | 9.7 mi | |
| Pheasant Ridge Estates |
300 | 1 | 9.8 mi | |
| Town of Mount Airy |
9,890 | 2 | 9.8 mi | |
| Wakefield Valley |
2,436 | 2 | 11.7 mi | |
| Town of New Windsor |
1,732 | 1 | 12.0 mi | |
| City of Westminster |
35,256 | 1 | 12.1 mi | |
| Town of Union Bridge |
997 | 0 | 15.9 mi | |
| Bark Hill Bible Church |
163 | 0 | 16.0 mi | |
| Town of Hampstead |
6,600 | 0 | 16.1 mi | |
| Pleasant Valley |
150 | 0 | 16.5 mi | |
| Rockbrook Village Mobile Home Park |
150 | 0 | 18.0 mi | |
| Town of Manchester |
4,954 | 0 | 18.3 mi | |
| City of Taneytown |
6,750 | 0 | 20.4 mi |
Non-community systems in Carroll County (200: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
About this data
Water systems are matched to Carroll 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.
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.