Massac County, Illinois — public water systems
At a glance
5 active public water systems are filed under Massac County, Illinois in EPA's SDWIS records, together reporting 14,244 people served. The largest is Metropolis, which reports serving 6,309 people. 4 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
5
Population served
14.2K
Community systems
4
Groundwater share
100%
How does Massac County compare with other Illinois counties?
Massac County has the 98th-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 14,244 people served in total, the 65th-largest county figure in the state and 0.1% of the statewide total. The average system here reports serving 2,849 people, about 11% 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 Massac County's drinking water come from?
By primary water source, Massac County's active systems draw on groundwater (4, 80%) and purchased groundwater (1, 20%). Overall, all rely mainly on groundwater (including purchased groundwater) and none 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, Metropolis, draws primarily on groundwater.
What kinds of water systems operate in Massac County?
Massac County's active systems break down as 4 community systems (80%) and 1 non-transient non-community systems (20%). 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 non-transient non-community water system regularly serves at least 25 of the same people for more than six months a year, but not where they live. Schools, factories, office buildings and hospitals with their own supply are typical examples. EPA lists their owner types as local government (80%) and private (20%).
Water systems in Massac County
🔒 Create a free account to export CSV| # | Water system | County | Population served | Type | Source |
|---|---|---|---|---|---|
| 1 | Metropolis | Massac | 6,309 | Community | Groundwater |
| 2 | Fort Massac PWD | Massac | 6,290 | Community | Purchased groundwater |
| 3 | Brookport | Massac | 730 | Community | Groundwater |
| 4 | Solstice Advanced Materials Us, Inc. | Massac | 470 | Non-transient non-community | Groundwater |
| 5 | Joppa | Massac | 445 | Community | Groundwater |
Massac County water systems: frequently asked questions
How many public water systems are in Massac County, Illinois?
EPA's SDWIS records file 5 active public water systems under Massac County, Illinois: 4 community systems (80%) and 1 non-transient non-community systems (20%).
Who supplies drinking water in Massac County, IL?
The largest community water systems filed under Massac County are Metropolis (6,309 people served), Fort Massac PWD (6,290 people served) and Brookport (730 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 Massac County's drinking water come from groundwater or surface water?
Of the 5 active public water systems in Massac County, all draw mainly on groundwater and none on surface water, counting purchased supplies. The largest system, Metropolis, uses groundwater.
Where can I find a water quality report for Massac 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. 4 community systems are filed under Massac 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 Massac 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 Massac County, Illinois”, https://aquacensus.com/water-systems/illinois/massac (data as of October 1, 2026).