Iowa
Winnebago County drinking water quality
19 active public water systems serve 9,425 people in Winnebago County. 11 are compliant, 8 had at least one EPA violation in the past three years, 0 are designated serious violators, and 0 carry a health flag.
Community water systems
7 systems, largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Forest City Water Supply Forest City |
4,285 | 0 | 0 | |
|
Lake Mills Municipal Water Dept-South Lake Mills |
2,158 | 0 | 0 | |
|
Buffalo Center Muni Water Dept Buffalo Center |
857 | 0 | 0 | |
|
Thompson Water Works Thompson |
499 | 0 | 0 | |
|
Leland Water Supply Leland |
249 | 1 | 0 | |
|
Rake Water Supply Rake |
186 | 0 | 0 | |
|
Rocky Knoll MHP Forest City |
49 | 3 | 0 |
Non-community systems (12: schools, campgrounds, workplaces, restaurants)
These systems serve places people visit rather than homes.
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Three Fingers Campground Forest City |
252 | 1 | 0 | |
|
Iowa Cage Free Thompson Thompson |
170 | 0 | 0 | |
|
Five Star Cooperative (scarville) Scarville |
114 | 0 | 0 | |
|
Super Bowl Forest City |
110 | 0 | 0 | |
|
Rice Lake Golf & Country Club Lake Mills |
100 | 3 | 0 | |
|
Scarville Lutheran Church Scarville |
95 | 0 | 0 | |
|
Word of Faith Dominion Church Lake Mills |
81 | 2 | 0 | |
|
The Barn (buffalo Center) Buffalo Center |
60 | 0 | 0 | |
|
Thorpe Park-Winnebago Conservation Forest City |
60 | 1 | 0 | |
|
Pilot Knob State Park-Campground Forest City |
50 | 0 | 0 | |
|
Christensen Farms Midwest LLC Forest City |
25 | 1 | 0 | |
|
Winnebago CC Environmental Educ Center Leland |
25 | 4 | 1 |
Inactive systems (17, no longer operating or reporting)
Kept for the record and excluded from the county totals above. Browse inactive systems.
About this data
Totals cover active systems. Systems serving more than one county are counted in each county. EPA counts the rules a system was in violation of, not the individual violations; one rule can carry several.
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.