Marion County, Iowa — public water systems
At a glance
13 active public water systems are filed under Marion County, Iowa in EPA's SDWIS records, together reporting 30,229 people served. The largest is Pella Water Works Department, which reports serving 11,052 people. All 13 are community water systems serving people where they live.
Dataset updated . Source: EPA SDWIS/ECHO, refreshed quarterly.
Active systems
13
Population served
30.2K
Community systems
13
Groundwater share
100%
How does Marion County compare with other Iowa counties?
Marion County has the 53rd-most active public water systems among the 114 counties listed for active Iowa systems in EPA records; among the 96 with 3 or more systems, the median has 14. Its systems report 30,229 people served in total, the 22nd-largest county figure in the state and 1% of the statewide total. The average system here reports serving 2,325 people, about 35% above the Iowa average of 1,718. Population figures are what each system reports; people served by more than one system, such as a wholesaler and the town that buys from it, are counted by each.
Where does Marion County's drinking water come from?
By primary water source, Marion County's active systems draw on purchased groundwater (8, 62%) and groundwater (5, 38%). Overall, all rely mainly on groundwater (including purchased groundwater) and none on surface water, compared with 92% and 7.8% across Iowa. Purchased groundwater means the system buys groundwater from another public water system rather than drawing its own. The county's largest system, Pella Water Works Department, draws primarily on groundwater.
What kinds of water systems operate in Marion County?
Marion County's active systems break down as 13 community systems (100%). A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. EPA lists their owner types as local government (54%) and private (46%).
Water systems in Marion County
🔒 Create a free account to export CSV| # | Water system | County | Population served | Type | Source |
|---|---|---|---|---|---|
| 1 | Pella Water Works Department | Marion | 11,052 | Community | Groundwater |
| 2 | Knoxville Water Works | Marion | 8,400 | Community | Groundwater |
| 3 | Marion Co. Rural Water District | Marion | 5,687 | Community | Purchased groundwater |
| 4 | Pleasantville Water Works | Marion | 1,676 | Community | Groundwater |
| 5 | Melcher-Dallas Water Supply | Marion | 1,213 | Community | Groundwater |
| 6 | Irua - Pershing Utilities | Marion | 488 | Community | Purchased groundwater |
| 7 | Bussey Water Supply | Marion | 427 | Community | Purchased groundwater |
| 8 | Wheel Estates Mhc | Marion | 315 | Community | Purchased groundwater |
| 9 | Colonial Terrace MHP LLC | Marion | 250 | Community | Purchased groundwater |
| 10 | Sunrise Mill | Marion | 237 | Community | Purchased groundwater |
| 11 | Harvey Water Works | Marion | 236 | Community | Groundwater |
| 12 | Southshore Heights | Marion | 138 | Community | Purchased groundwater |
| 13 | Vista Village Mhc | Marion | 110 | Community | Purchased groundwater |
Marion County water systems: frequently asked questions
How many public water systems are in Marion County, Iowa?
EPA's SDWIS records file 13 active public water systems under Marion County, Iowa: 13 community systems (100%).
Who supplies drinking water in Marion County, IA?
The largest community water systems filed under Marion County are Pella Water Works Department (11,052 people served), Knoxville Water Works (8,400 people served) and Marion Co. Rural Water District (5,687 people served). Which system serves a particular address depends on its service area, which EPA's SDWIS records do not include; a water bill or the local utility can confirm it.
Does Marion County's drinking water come from groundwater or surface water?
Of the 13 active public water systems in Marion County, all draw mainly on groundwater and none on surface water, counting purchased supplies. The largest system, Pella Water Works Department, uses groundwater.
Where can I find a water quality report for Marion County?
Each community water system must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1, covering the previous calendar year. 13 community systems are filed under Marion County, so the report to look for is the one from the system that supplies your address.
How can I check violations for a water system in Marion County?
Open the system's profile from the list on this page. Each profile shows the most recent Safe Drinking Water Act violations in EPA's records, with plain-English labels and whether each one is resolved. For current compliance status, EPA ECHO is the primary source.
More Iowa water systems
- All Iowa public water systems· 1,828 active
- Carroll County· 13 systems
- Fremont County· 13 systems
- Hamilton County· 13 systems
- Humboldt County· 13 systems
- Plymouth County· 13 systems
- Tama County· 13 systems
- How to find out who supplies your drinking water
- How to find and read your annual water quality report
About this data
Source: U.S. EPA Safe Drinking Water Information System (SDWIS) and SDWA violation records, via EPA ECHO, as published October 1, 2026 — AquaCensus refreshes it quarterly. See the methodology for how records are matched, cleaned and scored.
Cite as: AquaCensus, “Public water systems in Marion County, Iowa”, https://aquacensus.com/water-systems/iowa/marion (data as of October 1, 2026).