Water quality in Williston, Maryland
Williston is in Caroline County. 59 active public water systems serve the county; 17 had an EPA violation in the past three years.
Most likely your provider
Other community water systems in Caroline County
18 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Tower Court Mobile Home Park |
40 | 1 | 6.2 mi | |
| Holly Cove Harbor Mobile Home Park |
45 | 2 | 6.4 mi | |
| Nelpine Mobile Home Park |
70 | 0 | 7.1 mi | |
| Jonestown Water System |
150 | 1 | 7.3 mi | |
| Meadowbrook Court |
50 | 1 | 7.6 mi | |
| Town of Ridgely |
1,600 | 0 | 8.3 mi | |
| Dover Bridge Park |
100 | 3 | 8.7 mi | |
| Town of Preston |
750 | 1 | 8.8 mi | |
| Dover Bridge II Mobile Home Park |
35 | 0 | 8.9 mi | |
| Taylors Mobile Home Park |
27 | 6 | 10.0 mi | |
| Town of Greensboro |
1,878 | 1 | 10.4 mi | |
| Town of Federalsburg |
2,450 | 1 | 10.5 mi | |
| Liberty Mobile Home Park |
40 | 2 | 10.7 mi | |
| Benedictine School |
300 | 3 | 12.4 mi | |
| Caroline Acres Mobile Home Park |
395 | 4 | 17.1 mi | |
| Town of Henderson |
156 | 4 | 17.5 mi | |
| Cedar Mobile Home Park |
300 | 3 | 19.7 mi | |
| Harman Subdivision |
35 | 3 | 21.2 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, nearest to Williston 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.
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.