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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

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Active public water systems in Benton County, Iowa
#Water systemCountyPopulation servedTypeSource
1Vinton Municipal Water DeptBenton4,938CommunityGroundwater
2Belle Plaine Water DeptBenton2,380CommunityGroundwater
3Atkins Municipal Water WorksBenton2,056CommunityGroundwater
4Poweshiek Water Association (Cr)Benton2,000CommunityPurchased groundwater under influence
5Urbana Water SupplyBenton1,554CommunityGroundwater
6Shellsburg Water SupplyBenton961CommunityGroundwater
7Newhall Water SupplyBenton881CommunityGroundwater
8Van Horne Water WorksBenton779CommunityPurchased groundwater under influence
9Blairstown Water SupplyBenton738CommunityGroundwater
10Keystone Water SupplyBenton599CommunityGroundwater
11Norway City Water SupplyBenton466CommunityPurchased groundwater under influence
12Clover Ridge SubdivisionBenton413CommunityGroundwater
13Garrison Water SupplyBenton344CommunityGroundwater
14Timber RidgeBenton225CommunityPurchased groundwater under influence
15Mount Auburn Water SupplyBenton162CommunityGroundwater
16Oakgrove Christian ChurchBenton140Transient non-communityGroundwater
17Knapp Creek Event CenterBenton100Transient non-communityGroundwater
18Lazy AcresBenton99Transient non-communityGroundwater
19Walnut Street WellBenton45CommunityGroundwater
20Bullys Angle InnBenton42Transient non-communityGroundwater
21Benton County Nature Center/Rodgers PkBenton35Transient non-communityGroundwater
22Wildcat Bluff-Benton ConservationBenton25Transient non-communityGroundwater
23Terry Water AssociationBenton25CommunityGroundwater

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

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).