Water quality for ZIP code 20111
ZIP 20111 covers Buckhall, Manassas Park, Yorkshire, and Loch Lomond in Prince William County, Virginia, one of 15 ZIP codes in the county. 45 active public water systems serve the county; 13 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 Prince William County
10 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Pwcsa Carters Grove |
105 | 0 | 6.8 mi | |
| Dale City |
72,062 | 0 | 8.2 mi | |
| Woodbridge MHP LLC |
320 | 1 | 9.5 mi | |
| Pwcsa East |
168,747 | 0 | 9.9 mi | |
| Pwcsa Hoadly Manor |
207 | 0 | 11.1 mi | |
| Quantico, Town of |
650 | 0 | 14.2 mi | |
| Quantico McB-Camp Barrett |
8,689 | 0 | 16.2 mi | |
| McB Quantico Mainside |
19,000 | 1 | 16.5 mi | |
| Bull Run Mountain/evergreen (brme) |
1,803 | 0 | 17.0 mi | |
| Linton Hall School |
350 | 0 | — |
Non-community systems in Prince William County (34: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
About this data
Water systems are matched to Prince William 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 Virginia 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.