Benton County, Iowa — public water systems
At a glance
23 active public water systems are filed under Benton County, Iowa in EPA's SDWIS records, together reporting 19,007 people served. The largest is Vinton Municipal Water Dept, which reports serving 4,938 people. 17 are community water systems serving people where they live; the other 6 are non-community systems, such as schools, workplaces, campgrounds and gas stations with their own supply.
Dataset updated . Source: EPA SDWIS/ECHO, refreshed quarterly.
Active systems
23
Population served
19K
Community systems
17
Groundwater share
100%
How does Benton County compare with other Iowa counties?
Benton County has the 21st-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 19,007 people served in total, the 32nd-largest county figure in the state and 0.6% of the statewide total. The average system here reports serving 826 people, about half of 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 Benton County's drinking water come from?
By primary water source, Benton County's active systems draw on groundwater (19, 83%) and purchased groundwater under influence (4, 17%). Overall, all rely mainly on groundwater (including purchased groundwater) and none on surface water, compared with 92% and 7.8% across Iowa. Groundwater means the system draws its water from wells or springs fed by underground aquifers. The county's largest system, Vinton Municipal Water Dept, draws primarily on groundwater.
What kinds of water systems operate in Benton County?
Benton County's active systems break down as 17 community systems (74%) and 6 transient non-community systems (26%). 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. A transient non-community water system serves places where people do not stay long, such as gas stations and campgrounds, and regularly serves at least 25 people a day for at least 60 days a year. EPA lists their owner types as local government (61%) and private (39%).
Water systems in Benton County
🔒 Create a free account to export CSV| # | Water system | County | Population served | Type | Source |
|---|---|---|---|---|---|
| 1 | Vinton Municipal Water Dept | Benton | 4,938 | Community | Groundwater |
| 2 | Belle Plaine Water Dept | Benton | 2,380 | Community | Groundwater |
| 3 | Atkins Municipal Water Works | Benton | 2,056 | Community | Groundwater |
| 4 | Poweshiek Water Association (Cr) | Benton | 2,000 | Community | Purchased groundwater under influence |
| 5 | Urbana Water Supply | Benton | 1,554 | Community | Groundwater |
| 6 | Shellsburg Water Supply | Benton | 961 | Community | Groundwater |
| 7 | Newhall Water Supply | Benton | 881 | Community | Groundwater |
| 8 | Van Horne Water Works | Benton | 779 | Community | Purchased groundwater under influence |
| 9 | Blairstown Water Supply | Benton | 738 | Community | Groundwater |
| 10 | Keystone Water Supply | Benton | 599 | Community | Groundwater |
| 11 | Norway City Water Supply | Benton | 466 | Community | Purchased groundwater under influence |
| 12 | Clover Ridge Subdivision | Benton | 413 | Community | Groundwater |
| 13 | Garrison Water Supply | Benton | 344 | Community | Groundwater |
| 14 | Timber Ridge | Benton | 225 | Community | Purchased groundwater under influence |
| 15 | Mount Auburn Water Supply | Benton | 162 | Community | Groundwater |
| 16 | Oakgrove Christian Church | Benton | 140 | Transient non-community | Groundwater |
| 17 | Knapp Creek Event Center | Benton | 100 | Transient non-community | Groundwater |
| 18 | Lazy Acres | Benton | 99 | Transient non-community | Groundwater |
| 19 | Walnut Street Well | Benton | 45 | Community | Groundwater |
| 20 | Bullys Angle Inn | Benton | 42 | Transient non-community | Groundwater |
| 21 | Benton County Nature Center/Rodgers Pk | Benton | 35 | Transient non-community | Groundwater |
| 22 | Wildcat Bluff-Benton Conservation | Benton | 25 | Transient non-community | Groundwater |
| 23 | Terry Water Association | Benton | 25 | Community | Groundwater |
Benton County water systems: frequently asked questions
How many public water systems are in Benton County, Iowa?
EPA's SDWIS records file 23 active public water systems under Benton County, Iowa: 17 community systems (74%) and 6 transient non-community systems (26%).
Who supplies drinking water in Benton County, IA?
The largest community water systems filed under Benton County are Vinton Municipal Water Dept (4,938 people served), Belle Plaine Water Dept (2,380 people served) and Atkins Municipal Water Works (2,056 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 Benton County's drinking water come from groundwater or surface water?
Of the 23 active public water systems in Benton County, all draw mainly on groundwater and none on surface water, counting purchased supplies. The largest system, Vinton Municipal Water Dept, uses groundwater.
Where can I find a water quality report for Benton 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. 17 community systems are filed under Benton 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 Benton 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
- Delaware County· 28 systems
- Kossuth County· 27 systems
- Jackson County· 26 systems
- Washington County· 24 systems
- Dallas County· 23 systems
- Fayette County· 23 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 Benton County, Iowa”, https://aquacensus.com/water-systems/iowa/benton (data as of October 1, 2026).