Shelby County, Illinois — public water systems
At a glance
12 active public water systems are filed under Shelby County, Illinois in EPA's SDWIS records, together reporting 12,045 people served. The largest is Shelbyville, which reports serving 5,600 people. 9 are community water systems serving people where they live; the other 3 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
12
Population served
12K
Community systems
9
Groundwater share
75%
How does Shelby County compare with other Illinois counties?
Shelby County has the 69th-most active public water systems among the 149 counties listed for active Illinois systems in EPA records; among the 104 with 3 or more systems, the median has 18. Its systems report 12,045 people served in total, the 78th-largest county figure in the state and less than 0.1% of the statewide total. The average system here reports serving 1,004 people, well below the Illinois average of 3,204. 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 Shelby County's drinking water come from?
By primary water source, Shelby County's active systems draw on groundwater (7, 58%), purchased surface water (3, 25%) and purchased groundwater (2, 17%). Overall, 75% rely mainly on groundwater (including purchased groundwater) and 25% on surface water, compared with 82% and 18% across Illinois. Groundwater means the system draws its water from wells or springs fed by underground aquifers. The county's largest system, Shelbyville, draws primarily on groundwater.
What kinds of water systems operate in Shelby County?
Shelby County's active systems break down as 9 community systems (75%) and 3 transient non-community systems (25%). 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 (75%) and private (25%).
Water systems in Shelby County
🔒 Create a free account to export CSV| # | Water system | County | Population served | Type | Source |
|---|---|---|---|---|---|
| 1 | Shelbyville | Shelby | 5,600 | Community | Groundwater |
| 2 | Moweaqua | Shelby | 1,785 | Community | Groundwater |
| 3 | Windsor | Shelby | 1,200 | Community | Purchased surface water |
| 4 | Findlay | Shelby | 750 | Community | Purchased surface water |
| 5 | Stewardson | Shelby | 734 | Community | Groundwater |
| 6 | Cowden | Shelby | 612 | Community | Groundwater |
| 7 | Tower Hill | Shelby | 500 | Community | Purchased surface water |
| 8 | Sigel | Shelby | 386 | Community | Groundwater |
| 9 | Herrick | Shelby | 358 | Community | Groundwater |
| 10 | Knobs Baptist Church | Shelby | 70 | Transient non-community | Groundwater |
| 11 | Twice the Ice Shelbyville | Shelby | 25 | Transient non-community | Purchased groundwater |
| 12 | Prairie Pure Vending | Shelby | 25 | Transient non-community | Purchased groundwater |
Shelby County water systems: frequently asked questions
How many public water systems are in Shelby County, Illinois?
EPA's SDWIS records file 12 active public water systems under Shelby County, Illinois: 9 community systems (75%) and 3 transient non-community systems (25%).
Who supplies drinking water in Shelby County, IL?
The largest community water systems filed under Shelby County are Shelbyville (5,600 people served), Moweaqua (1,785 people served) and Windsor (1,200 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 Shelby County's drinking water come from groundwater or surface water?
Of the 12 active public water systems in Shelby County, 75% draw mainly on groundwater and 25% on surface water, counting purchased supplies. The largest system, Shelbyville, uses groundwater.
Where can I find a water quality report for Shelby 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. 9 community systems are filed under Shelby 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 Shelby 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 Illinois 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 Shelby County, Illinois”, https://aquacensus.com/water-systems/illinois/shelby (data as of October 1, 2026).