Water quality for ZIP code 52161
ZIP 52161 covers Ossian in Winneshiek County, Iowa, one of 7 ZIP codes in the county. 43 active public water systems serve the county; 12 had an EPA violation in the past three years.
Most likely your provider
Other community water systems in Winneshiek County
12 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Castalia Water Works Castalia |
145 | 0 | 4.2 mi | |
| Calmar Water Supply Calmar |
1,125 | 0 | 6.7 mi | |
| Fort Atkinson Water Works Fort Atkinson |
347 | 0 | 8.2 mi | |
| Frankville Rwd Frankville |
135 | 0 | 9.9 mi | |
| Sherman Place Water & Road, Inc. Decorah |
73 | 0 | 10.4 mi | |
| Scenic View Estates Decorah |
78 | 0 | 10.6 mi | |
| Spillville Water Supply Spillville |
371 | 0 | 11.1 mi | |
| Decorah Water Department Decorah |
7,615 | 0 | 11.9 mi | |
| Deerfield Heights Association Decorah |
28 | 0 | 12.0 mi | |
| Freeport Water District Decorah |
775 | 0 | 12.2 mi | |
| Ridgeway, City of Ridgeway |
275 | 1 | 16.5 mi | |
| Plantation Country View Subdivision Ridgeway |
32 | 0 | 16.6 mi |
Non-community systems in Winneshiek County (30: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
About this data
Water systems are matched to Winneshiek 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.