Iowa
Louisa County drinking water quality
22 active public water systems serve 9,612 people in Louisa County. 10 are compliant, 12 had at least one EPA violation in the past three years, 1 is a designated serious violator, and 1 carries a health flag.
Needs attention
Community water systems
8 systems, largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Wapello Municipal Water Works Wapello |
1,977 | 0 | 0 | |
|
Columbus Junction Water Supply Columbus Junction |
1,830 | 0 | 0 | |
|
Morning Sun Water Department Morning Sun |
752 | 0 | 0 | |
|
Grandview Muni Water Dept Grandview |
437 | 1 | 1 | |
|
Columbus City Public Water Supply Columbus City |
392 | 1 | 0 | |
|
Oakville Water Supply Oakville |
200 | 3 | 0 | |
|
Woodland Wapello Mobile Home Park Wapello |
126 | 1 | 0 | |
|
Louisa CO Law Enforcement Ctr Wapello |
46 | 1 | 1 |
Non-community systems (14: schools, campgrounds, workplaces, restaurants)
These systems serve places people visit rather than homes.
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Tyson Fresh Meats INC (columbus Jct) Columbus Junction |
1,300 | 0 | 0 | |
|
Louisa-Muscatine Community School Letts |
1,190 | 0 | 0 | |
|
Caseys #3449 Morning Sun |
715 | 0 | 0 | |
|
Cedarcrest Golf & Country Club Columbus Junction |
146 | 1 | 0 | |
|
Ship's Place Wapello |
136 | 1 | 0 | |
|
Cotter Outback LLC Ainsworth |
72 | 0 | 0 | |
|
Deese Thirsty Camel Conesville |
67 | 3 | 1 | |
|
Heritage Oaks Golf & Country Club Wapello |
60 | 1 | 1 | |
|
Lake Odessa Cabin Owners Assoc. Wapello |
31 | 1 | 0 | |
|
Wiele Motor Columbus Junction |
31 | 0 | 0 | |
|
Letts Community Building Letts |
27 | 0 | 0 | |
|
Whispering Maples Campground LLC Wapello |
27 | 2 | 2 | |
|
Natural Gas Pipeline Station # 204 Columbus Junction |
25 | 0 | 0 | |
|
Odessa Dells Wapello |
25 | 1 | 1 |
Inactive systems (29, 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.