Macoupin County, Illinois — public water systems
At a glance
32 active public water systems are filed under Macoupin County, Illinois in EPA's SDWIS records, together reporting 45,161 people served. The largest is Carlinville, which reports serving 6,598 people. 30 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
32
Population served
45.2K
Community systems
30
Groundwater share
3.1%
How does Macoupin County compare with other Illinois counties?
Macoupin County has the 34th-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 45,161 people served in total, the 28th-largest county figure in the state and 0.4% of the statewide total. The average system here reports serving 1,411 people, about 56% 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 Macoupin County's drinking water come from?
By primary water source, Macoupin County's active systems draw on purchased surface water (26, 81%), surface water (5, 16%) and purchased groundwater (1, 3.1%). Overall, 3.1% rely mainly on groundwater (including purchased groundwater) and 97% 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, Carlinville, draws primarily on surface water.
What kinds of water systems operate in Macoupin County?
Macoupin County's active systems break down as 30 community systems (94%) and 2 transient non-community systems (6.3%). 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 (88%) and private (13%).
Water systems in Macoupin County
🔒 Create a free account to export CSV| # | Water system | County | Population served | Type | Source |
|---|---|---|---|---|---|
| 1 | Carlinville | Macoupin | 6,598 | Community | Surface water |
| 2 | Staunton | Macoupin | 5,756 | Community | Surface water |
| 3 | Brighton | Macoupin | 5,041 | Community | Purchased surface water |
| 4 | Gillespie | Macoupin | 3,737 | Community | Surface water |
| 5 | Virden | Macoupin | 3,274 | Community | Purchased surface water |
| 6 | Mount Olive | Macoupin | 2,193 | Community | Purchased surface water |
| 7 | Girard | Macoupin | 1,885 | Community | Purchased surface water |
| 8 | Central Macoupin County Rwd | Macoupin | 1,883 | Community | Purchased surface water |
| 9 | Bunker Hill | Macoupin | 1,760 | Community | Purchased surface water |
| 10 | Benld | Macoupin | 1,612 | Community | Purchased surface water |
| 11 | Nilwood | Macoupin | 1,394 | Community | Purchased surface water |
| 12 | Otter Lake Water Commission | Macoupin | 1,318 | Community | Surface water |
| 13 | Lake Williamson Christian Center | Macoupin | 1,250 | Community | Purchased surface water |
| 14 | South Palmyra Water Commission | Macoupin | 838 | Community | Purchased surface water |
| 15 | Kaho Public Water District | Macoupin | 785 | Community | Purchased surface water |
| 16 | Scottville Rural Water Company, Inc.. | Macoupin | 695 | Community | Purchased surface water |
| 17 | Palmyra | Macoupin | 605 | Community | Purchased surface water |
| 18 | Sawyerville | Macoupin | 578 | Community | Purchased surface water |
| 19 | Shipman | Macoupin | 541 | Community | Purchased surface water |
| 20 | Dorchester | Macoupin | 540 | Community | Purchased surface water |
| 21 | Wilsonville | Macoupin | 536 | Community | Purchased surface water |
| 22 | White City | Macoupin | 485 | Community | Purchased surface water |
| 23 | Medora | Macoupin | 484 | Community | Purchased surface water |
| 24 | Mount Clare | Macoupin | 311 | Community | Purchased surface water |
| 25 | Royal Lakes | Macoupin | 235 | Community | Purchased surface water |
| 26 | Chesterfield | Macoupin | 184 | Community | Purchased surface water |
| 27 | Modesto | Macoupin | 182 | Community | Purchased surface water |
| 28 | Hettick | Macoupin | 174 | Community | Purchased surface water |
| 29 | Eagarville | Macoupin | 127 | Community | Purchased surface water |
| 30 | Palmyra-Modesto Water Commission | Macoupin | 110 | Community | Surface water |
| 31 | Magic Wand Car Wash Benld | Macoupin | 25 | Transient non-community | Purchased surface water |
| 32 | Twice the Ice Carlinville | Macoupin | 25 | Transient non-community | Purchased groundwater |
Macoupin County water systems: frequently asked questions
How many public water systems are in Macoupin County, Illinois?
EPA's SDWIS records file 32 active public water systems under Macoupin County, Illinois: 30 community systems (94%) and 2 transient non-community systems (6.3%).
Who supplies drinking water in Macoupin County, IL?
The largest community water systems filed under Macoupin County are Carlinville (6,598 people served), Staunton (5,756 people served) and Brighton (5,041 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 Macoupin County's drinking water come from groundwater or surface water?
Of the 32 active public water systems in Macoupin County, 3.1% draw mainly on groundwater and 97% on surface water, counting purchased supplies. The largest system, Carlinville, uses surface water.
Where can I find a water quality report for Macoupin 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. 30 community systems are filed under Macoupin 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 Macoupin 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
- All Illinois public water systems· 3,872 active
- Jo Daviess County· 41 systems
- Carroll County· 35 systems
- Vermilion County· 35 systems
- Knox County· 34 systems
- Fulton County· 30 systems
- Livingston County· 29 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 Macoupin County, Illinois”, https://aquacensus.com/water-systems/illinois/macoupin (data as of October 1, 2026).