Public water system · IL1970465
ActiveJoliet Treatment Center
At a glance
Joliet Treatment Center (PWSID IL1970465) is an active community water system in Will County, Illinois. It reports serving 217 people through 18 service connections. Its primary water source is purchased groundwater, and EPA lists it as owned by a state government. EPA's Safe Drinking Water Act records list no violations for this system.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
217
Service connections
18
Primary source
GWP
Purchased groundwater
System type
CWS
Community water system
System record
How does Joliet Treatment Center compare with other water systems in Will County?
By EPA's size categories, Joliet Treatment Center is a very small system (500 people or fewer). Will County has 236 active public water systems. Its population served is well below the county average of 2,607 people per system, and accounts for less than 0.1% of the 615,219 people reported by systems filed under the county. Across Illinois, the 3,872 active systems average 3,204 people each. Nationally, the average active community water system reports serving 6,703 people, so Joliet Treatment Center is well below that figure.
What does “community water system” mean?
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. Illinois has 1,773 active community water systems, 46% of the state's 3,872 active systems. Purchased groundwater means the system buys groundwater from another public water system rather than drawing its own. 348 Illinois systems (9%) list purchased groundwater as their primary source.
Who owns and regulates Joliet Treatment Center?
EPA lists Joliet Treatment Center as owned by a state government. The IL state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 5 of the 236 active systems in Will County (2.1%) are also owned by a state government.
Does Joliet Treatment Center have drinking water violations?
No SDWA violations on record.
EPA's SDWA violation and enforcement data (via EPA ECHO, updated quarterly) lists no violations for Joliet Treatment Center. For the latest compliance status, check EPA ECHO for current compliance history.
Joliet Treatment Center: frequently asked questions
Who runs Joliet Treatment Center?
Joliet Treatment Center (PWSID IL1970465) is a community water system owned by a state government. It is regulated by the IL state drinking water program.
How many people does Joliet Treatment Center serve?
Joliet Treatment Center reports serving 217 people through 18 service connections in Will County, Illinois.
Where does Joliet Treatment Center get its water?
EPA SDWIS lists this system's primary water source as purchased groundwater. Purchased groundwater means the system buys groundwater from another public water system rather than drawing its own.
Does Joliet Treatment Center have any drinking water violations?
EPA's Safe Drinking Water Act records list no violations for this system.
Is Joliet Treatment Center's water safe to drink?
AquaCensus shows EPA compliance records, not current water test results, so it cannot say whether the water is safe at a given moment. EPA's Safe Drinking Water Act records list no violations for this system. For current results, consult the system's annual water quality report, EPA ECHO, or the IL state drinking water program.
Where can I find Joliet Treatment Center's water quality report?
As a community water system, Joliet Treatment Center must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1 each year, covering the previous calendar year. The system can provide a copy on request.
Other water systems in Will County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Joliet | Will | 160,000 | Community | Groundwater |
| Il American-West Suburban | Will | 73,978 | Community | Purchased surface water |
| Romeoville | Will | 50,458 | Community | Groundwater |
| Plainfield | Will | 50,000 | Community | Purchased surface water |
| New Lenox | Will | 27,690 | Community | Purchased surface water |
| Il American-Homer Township | Will | 24,543 | Community | Purchased surface water |
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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, “Joliet Treatment Center, PWSID IL1970465, Illinois”, https://aquacensus.com/water-systems/illinois/joliet-treatment-center-il1970465 (data as of October 1, 2026).