Iowa
Iowa County drinking water quality
15 active public water systems serve 13,265 people in Iowa County. 6 are compliant, 9 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
11 systems, largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Williamsburg Public Water Supply Williamsburg |
3,345 | 1 | 0 | |
|
Poweshiek Water Association (iac) South Amana |
2,490 | 0 | 0 | |
|
Marengo Water Supply Marengo |
2,435 | 0 | 0 | |
|
Amana Society Water System North Middle Amana |
1,248 | 1 | 0 | |
|
North English Water Department North English |
1,065 | 0 | 0 | |
|
Victor Municipal Water Dept Victor |
875 | 1 | 0 | |
|
South Amana Water Supply South Amana |
300 | 0 | 0 | |
|
Ladora Water Supply Ladora |
229 | 5 | 3 | |
|
Millersburg Water Dept Millersburg |
135 | 0 | 0 | |
|
Waldenburg Community Water System Amana |
90 | 1 | 0 | |
|
Iowa Valley Estates Marengo |
46 | 1 | 0 |
Non-community systems (4: schools, campgrounds, workplaces, restaurants)
These systems serve places people visit rather than homes.
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Kinze Manufacturing INC Williamsburg |
710 | 1 | 0 | |
|
Upper Deer Creek Church Kalona |
200 | 0 | 0 | |
|
Americinn Williamsburg Williamsburg |
59 | 4 | 1 | |
|
ST Johns Lutheran Church (homestead) Homestead |
38 | 1 | 0 |
Inactive systems (52, 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.