Water quality in Monona, Iowa
Monona is in Clayton County. 45 active public water systems serve the county; 20 had an EPA violation in the past three years.
Most likely your provider
Other community water systems in Clayton County
15 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Monona Municipal Water Dept Monona |
1,471 | 0 | 2.3 mi | |
| Farmersburg Waterworks Farmersburg |
276 | 0 | 8.1 mi | |
| Saint Olaf Water Supply Saint Olaf |
106 | 0 | 9.7 mi | |
| Breezy Pointe Subdivision Mcgregor |
130 | 1 | 11.4 mi | |
| McGregor Water Dept Mcgregor |
747 | 1 | 12.7 mi | |
| Marquette Water Supply Marquette |
429 | 0 | 12.7 mi | |
| Walters Mobile Home Park Mcgregor |
25 | 1 | 12.7 mi | |
| Scenic Acres Elkader |
27 | 0 | 14.3 mi | |
| Elkader Muni Water Dept Elkader |
1,219 | 0 | 14.4 mi | |
| Garnavillo Water Supply Garnavillo |
763 | 0 | 16.9 mi | |
| Clayton Water Supply Clayton |
45 | 1 | 18.2 mi | |
| Volga Water Supply Volga City |
203 | 0 | 18.7 mi | |
| Guttenberg Water Utility Guttenberg |
1,817 | 0 | 25.8 mi | |
| Strawberry Point Water Supply Strawberry Point |
1,155 | 0 | 26.8 mi | |
| Edgewood Water Supply Edgewood |
939 | 0 | 29.0 mi |
Non-community systems in Clayton County (29: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
About this data
Water systems are matched to Clayton County, nearest to Monona 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.
Town locations and ZIP code areas come from U.S. Census Bureau 2020 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.