Water quality for ZIP code 50591
ZIP 50591 covers Thor in Humboldt County, Iowa, one of 10 ZIP codes in the county. 13 active public water systems serve the county; 4 had an EPA violation in the past three years.
Most likely your provider
Other community water systems in Humboldt County
7 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Dakota City Water Supply Dakota City |
769 | 0 | 8.0 mi | |
| Humboldt Municipal Water Dept Humboldt |
4,792 | 0 | 9.2 mi | |
| Renwick Munic Water Supply Renwick |
234 | 0 | 11.4 mi | |
| Rutland Water Supply Rutland |
116 | 0 | 13.2 mi | |
| Livermore Water Supply Livermore |
383 | 1 | 14.8 mi | |
| Bode Municipal Water Supply Bode |
304 | 1 | 17.6 mi | |
| Ottosen Water Supply Ottosen |
41 | 0 | 22.2 mi |
Non-community systems in Humboldt County (5: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Frank Gotch State Park-Humboldt Ccb Dakota City |
65 | 0 | 0 | |
|
Precision Pulley and Idler-Humboldt Humboldt |
100 | 1 | 0 | |
|
Hardy Water Supply Hardy |
26 | 0 | 0 | |
|
Humboldt Country Club Humboldt |
82 | 2 | 0 | |
|
Joe Sheldon Park-Humboldt Ccb Dakota City |
52 | 0 | 0 |
About this data
Water systems are matched to Humboldt 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 Iowa 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.