Water quality for ZIP code 21660
ZIP 21660 covers Ridgely in Caroline County, Maryland, one of 8 ZIP codes in the county. 59 active public water systems serve the county; 17 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 Caroline County
18 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Benedictine School |
300 | 3 | 3.6 mi | |
| Town of Greensboro |
1,878 | 1 | 4.7 mi | |
| Taylors Mobile Home Park |
27 | 6 | 5.0 mi | |
| Town of Denton |
4,848 | 0 | 6.3 mi | |
| Tower Court Mobile Home Park |
40 | 1 | 6.5 mi | |
| Caroline Acres Mobile Home Park |
395 | 4 | 10.1 mi | |
| Town of Henderson |
156 | 4 | 10.6 mi | |
| Cedar Mobile Home Park |
300 | 3 | 12.6 mi | |
| Holly Cove Harbor Mobile Home Park |
45 | 2 | 13.0 mi | |
| Harman Subdivision |
35 | 3 | 13.8 mi | |
| Dover Bridge Park |
100 | 3 | 15.1 mi | |
| Dover Bridge II Mobile Home Park |
35 | 0 | 15.3 mi | |
| Nelpine Mobile Home Park |
70 | 0 | 15.4 mi | |
| Jonestown Water System |
150 | 1 | 15.7 mi | |
| Meadowbrook Court |
50 | 1 | 16.5 mi | |
| Town of Preston |
750 | 1 | 16.9 mi | |
| Town of Federalsburg |
2,450 | 1 | 19.3 mi | |
| Liberty Mobile Home Park |
40 | 2 | 19.4 mi |
Non-community systems in Caroline County (40: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
About this data
Water systems are matched to Caroline 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.