Water quality for ZIP code 58801
ZIP 58801 covers Williston, Blacktail, and Trenton in Williams County, North Dakota, one of 9 ZIP codes in the county. 22 active public water systems serve the county; 11 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 Williams County
12 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Williston City of Williston |
26,426 | 0 | 5.8 mi | |
| Inspire Communities-Springbrook |
300 | 4 | 8.2 mi | |
| Trenton Water Users Assoc Trenton |
840 | 2 | 10.6 mi | |
| Western Area Water Supply Authority |
0 | 0 | 24.1 mi | |
| Ray City of Ray |
950 | 0 | 28.6 mi | |
| Grenora City of Grenora |
244 | 0 | 29.1 mi | |
| Wildrose City of Wildrose |
110 | 0 | 38.7 mi | |
| Tioga City of Tioga |
2,202 | 0 | 39.0 mi | |
| R & T Water System Ray, Tioga |
1,003 | 0 | 53.7 mi | |
| Prairie View HOA |
226 | 5 | — | |
| Fendee Estates |
30 | 2 | — | |
| The Bluffs HOA |
30 | 2 | — |
Non-community systems in Williams County (9: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Big Country RV Park |
48 | 0 | 0 | |
|
Stallion Oilfield Services-Williston |
90 | 0 | 0 | |
|
Mondak Portables (water Hauler) |
30 | 0 | 0 | |
|
Missouri-Yellowstone Interpretive Center |
100 | 1 | 0 | |
|
B & B RV |
25 | 1 | 0 | |
|
Little Beaver Bay Rec Area |
40 | 1 | 1 | |
|
Glacier Potable Water |
500 | 0 | 0 | |
|
13 Mile Center |
50 | 3 | 2 | |
|
Little Egypt Campground |
20 | 1 | 0 |
About this data
Water systems are matched to Williams 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 North Dakota 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.