Iowa
Marion County drinking water quality
13 active public water systems serve 30,229 people in Marion County. 9 are compliant, 4 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
13 systems, largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Pella Water Works Department Pella |
11,052 | 0 | 0 | |
|
Knoxville Water Works Knoxville |
8,400 | 0 | 0 | |
|
Marion Co. Rural Water District Knoxville |
5,687 | 2 | 1 | |
|
Pleasantville Water Works Pleasantville |
1,676 | 0 | 0 | |
|
Melcher-Dallas Water Supply Melcher-dallas |
1,213 | 0 | 0 | |
|
Irua Pershing Utilities Pershing |
488 | 2 | 1 | |
|
Bussey Water Supply Bussey |
427 | 0 | 0 | |
|
Wheel Estates MHC Knoxville |
315 | 0 | 0 | |
|
Colonial Terrace MHP LLC Knoxville |
250 | 0 | 0 | |
|
Sunrise Mill Pella |
237 | 1 | 0 | |
|
Marion CO Rwd (harvey) Harvey |
236 | 1 | 0 | |
|
Southshore Heights Knoxville |
138 | 0 | 0 | |
|
Vista Village MHC Pleasantville |
110 | 0 | 0 |
Inactive systems (32, 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.