Wisconsin
Dodge County drinking water quality
178 active public water systems serve 73,270 people in Dodge County. 148 are compliant, 30 had at least one EPA violation in the past three years, 2 are designated serious violators, and 1 carries a health flag.
Needs attention
Community water systems
24 systems, largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Beaver Dam Water Utility Beaver Dam |
16,200 | 1 | 1 | |
|
Waupun Utilities Waupun |
8,056 | 0 | 0 | |
|
Mayville Waterworks Mayville |
5,112 | 0 | 0 | |
|
Waupun Correctional Inst Waupun |
3,706 | 2 | 1 | |
|
Horicon Waterworks Horicon |
3,682 | 0 | 0 | |
|
Lomira Waterworks Lomira |
2,701 | 4 | 1 | |
|
Juneau Waterworks Juneau |
2,627 | 2 | 1 | |
|
Fox Lake Correctional Institution Fox Lake |
1,850 | 3 | 2 | |
|
Fox Lake Waterworks Fox Lake |
1,610 | 1 | 1 | |
|
Theresa Waterworks Theresa |
1,262 | 1 | 0 | |
|
Hustisford Waterworks Hustisford |
1,063 | 1 | 0 | |
|
Iron Ridge Waterworks Iron Ridge |
937 | 0 | 0 | |
|
Reeseville Waterworks Reeseville |
718 | 3 | 2 | |
|
Brownsville Waterworks Brownsville |
630 | 2 | 1 | |
|
Clyman Waterworks Clyman |
422 | 2 | 1 | |
|
North Hills MHP Beaver Dam |
420 | 2 | 1 | |
|
Lowell Waterworks Lowell |
337 | 2 | 1 | |
|
Leroy Sanitary District 1 Leroy |
320 | 4 | 1 | |
|
Hidden Meadows Watertown |
166 | 4 | 0 | |
|
Sunnyside Estates Beaver Dam |
135 | 0 | 0 | |
|
Maple Grove MHP Beaver Dam |
125 | 0 | 0 | |
|
Breezy Point MHP 2 Horicon |
51 | 0 | 0 | |
|
Marshview Terrace Waupun |
40 | 3 | 1 | |
|
Breezy Point MHP 1 Horicon |
30 | 0 | 0 |
Non-community systems (154: schools, campgrounds, workplaces, restaurants)
These systems serve places people visit rather than homes.
Inactive systems (230, 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 Wisconsin 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.