Perry County, Illinois — public water systems
At a glance
9 active public water systems are filed under Perry County, Illinois in EPA's SDWIS records, together reporting 19,020 people served. The largest is Duquoin, which reports serving 7,169 people. 7 are community water systems serving people where they live; the other 2 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
19K
Community systems
7
Groundwater share
33.3%
How does Perry County compare with other Illinois counties?
Perry County has the 81st-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 19,020 people served in total, the 58th-largest county figure in the state and 0.2% of the statewide total. The average system here reports serving 2,113 people, about 34% 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 Perry County's drinking water come from?
By primary water source, Perry County's active systems draw on purchased surface water (5, 56%), groundwater (2, 22%), purchased groundwater (1, 11%) and surface water (1, 11%). Overall, 33% rely mainly on groundwater (including purchased groundwater) and 67% on surface water, compared with 82% and 18% across Illinois. Purchased surface water means the system buys surface water from another public water system rather than drawing its own. The county's largest system, Duquoin, draws primarily on purchased surface water.
What kinds of water systems operate in Perry County?
Perry County's active systems break down as 7 community systems (78%) and 2 transient non-community systems (22%). 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 (56%), private (33%) and state government (11%).
Water systems in Perry County
🔒 Create a free account to export CSV| # | Water system | County | Population served | Type | Source |
|---|---|---|---|---|---|
| 1 | Duquoin | Perry | 7,169 | Community | Purchased surface water |
| 2 | Pinckneyville | Perry | 5,804 | Community | Surface water |
| 3 | Pinckneyville Correctional Center | Perry | 2,470 | Community | Purchased groundwater |
| 4 | Tamaroa | Perry | 2,197 | Community | Purchased surface water |
| 5 | Willisville | Perry | 799 | Community | Purchased surface water |
| 6 | Cutler | Perry | 463 | Community | Groundwater |
| 7 | Crossroads MHP | Perry | 53 | Community | Purchased surface water |
| 8 | Miller Campground | Perry | 40 | Transient non-community | Groundwater |
| 9 | Ice House Duquoin | Perry | 25 | Transient non-community | Purchased surface water |
Perry County water systems: frequently asked questions
How many public water systems are in Perry County, Illinois?
EPA's SDWIS records file 9 active public water systems under Perry County, Illinois: 7 community systems (78%) and 2 transient non-community systems (22%).
Who supplies drinking water in Perry County, IL?
The largest community water systems filed under Perry County are Duquoin (7,169 people served), Pinckneyville (5,804 people served) and Pinckneyville Correctional Center (2,470 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 Perry County's drinking water come from groundwater or surface water?
Of the 9 active public water systems in Perry County, 33% draw mainly on groundwater and 67% on surface water, counting purchased supplies. The largest system, Duquoin, uses purchased surface water.
Where can I find a water quality report for Perry 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. 7 community systems are filed under Perry 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 Perry 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 Perry County, Illinois”, https://aquacensus.com/water-systems/illinois/perry (data as of October 1, 2026).