Water quality for ZIP code 51334
ZIP 51334 covers Estherville, Gruver, and Superior in Emmet County, Iowa, one of 5 ZIP codes in the county. 11 active public water systems serve the county; 5 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 Emmet County
6 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Wallingford Municipal Waterworks Wallingford |
170 | 1 | 6.0 mi | |
| Dolliver Muni Water Supply Dolliver |
65 | 0 | 10.4 mi | |
| Armstrong Water Supply Armstrong |
918 | 3 | 16.2 mi | |
| Ringsted Water Supply Ringsted |
365 | 1 | 16.6 mi | |
| Oak Shores Armstrong |
55 | 1 | 19.4 mi | |
| Droessler's Water Bellevue |
158 | 1 | 235.1 mi |
Non-community systems in Emmet County (4: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Ingham Lake Bible Camp Wallingford |
100 | 0 | 0 | |
|
Wolden Recreation Area Estherville |
100 | 0 | 0 | |
|
Tuttle Lake-Emmet Conservation Estherville |
75 | 0 | 0 | |
|
Iowa Lake Emmet CO Conservation Dolliver |
25 | 0 | 0 |
About this data
Water systems are matched to Emmet 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 or, for systems without one, to the centre of the first town EPA lists the system as serving, from Census Bureau place files.
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.