Sac County, Iowa — public water systems
At a glance
9 active public water systems are filed under Sac County, Iowa in EPA's SDWIS records, together reporting 8,496 people served. The largest is Sac City Municipal Water Plant, which reports serving 2,093 people. 8 are community water systems serving people where they live; the other 1 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
9
Population served
8.5K
Community systems
8
Groundwater share
100%
How does Sac County compare with other Iowa counties?
Sac County has the 69th-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 8,496 people served in total, the 72nd-largest county figure in the state and 0.3% of the statewide total. The average system here reports serving 944 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 Sac County's drinking water come from?
By primary water source, Sac County's active systems draw on groundwater (9, 100%). 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, Sac City Municipal Water Plant, draws primarily on groundwater.
What kinds of water systems operate in Sac County?
Sac County's active systems break down as 8 community systems (89%) and 1 transient non-community systems (11%). 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 (89%) and private (11%).
Water systems in Sac County
🔒 Create a free account to export CSV| # | Water system | County | Population served | Type | Source |
|---|---|---|---|---|---|
| 1 | Sac City Municipal Water Plant | Sac | 2,093 | Community | Groundwater |
| 2 | West Central Rwa-Boyer System | Sac | 1,715 | Community | Groundwater |
| 3 | Lake View Water Supply | Sac | 1,133 | Community | Groundwater |
| 4 | Odebolt Water Supply | Sac | 994 | Community | Groundwater |
| 5 | Wall Lake Water Supply | Sac | 780 | Community | Groundwater |
| 6 | Schaller Water Supply | Sac | 729 | Community | Groundwater |
| 7 | Early Municipal Water Supply | Sac | 587 | Community | Groundwater |
| 8 | Auburn Water Supply | Sac | 265 | Community | Groundwater |
| 9 | Hagge Park-Sac County Conservation Board | Sac | 200 | Transient non-community | Groundwater |
Sac County water systems: frequently asked questions
How many public water systems are in Sac County, Iowa?
EPA's SDWIS records file 9 active public water systems under Sac County, Iowa: 8 community systems (89%) and 1 transient non-community systems (11%).
Who supplies drinking water in Sac County, IA?
The largest community water systems filed under Sac County are Sac City Municipal Water Plant (2,093 people served), West Central Rwa-Boyer System (1,715 people served) and Lake View Water Supply (1,133 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 Sac County's drinking water come from groundwater or surface water?
Of the 9 active public water systems in Sac County, all draw mainly on groundwater and none on surface water, counting purchased supplies. The largest system, Sac City Municipal Water Plant, uses groundwater.
Where can I find a water quality report for Sac 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. 8 community systems are filed under Sac 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 Sac 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 Sac County, Iowa”, https://aquacensus.com/water-systems/iowa/sac (data as of October 1, 2026).