Iowa
Clayton County drinking water quality
45 active public water systems serve 13,403 people in Clayton County. 25 are compliant, 20 had at least one EPA violation in the past three years, 0 are designated serious violators, and 1 carries a health flag.
Needs attention
Community water systems
16 systems, largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Guttenberg Water Utility Guttenberg |
1,817 | 0 | 0 | |
|
Monona Municipal Water Dept Monona |
1,471 | 0 | 0 | |
|
Elkader Muni Water Dept Elkader |
1,219 | 0 | 0 | |
|
Strawberry Point Water Supply Strawberry Point |
1,155 | 0 | 0 | |
|
Edgewood Water Supply Edgewood |
939 | 0 | 0 | |
|
Garnavillo Water Supply Garnavillo |
763 | 0 | 0 | |
|
McGregor Water Dept Mcgregor |
747 | 1 | 0 | |
|
Marquette Water Supply Marquette |
429 | 0 | 0 | |
|
Luana Water Works Luana |
301 | 1 | 0 | |
|
Farmersburg Waterworks Farmersburg |
276 | 0 | 0 | |
|
Volga Water Supply Volga City |
203 | 0 | 0 | |
|
Breezy Pointe Subdivision Mcgregor |
130 | 1 | 0 | |
|
Saint Olaf Water Supply Saint Olaf |
106 | 0 | 0 | |
|
Clayton Water Supply Clayton |
45 | 1 | 0 | |
|
Scenic Acres Elkader |
27 | 0 | 0 | |
|
Walters Mobile Home Park Mcgregor |
25 | 1 | 1 |
Non-community systems (29: schools, campgrounds, workplaces, restaurants)
These systems serve places people visit rather than homes.
Inactive systems (65, 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.