Public water system · IL0435400
ActiveDu Page Water Commission
At a glance
Du Page Water Commission (PWSID IL0435400) is an active community water system in DuPage County, Illinois. It reports serving 1 people through 29 service connections. Its primary water source is purchased surface water, and EPA lists it as owned by a local government. EPA's records list 2 violations for this system; none is health-based, and the most recent began in March 1998.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
1
Service connections
29
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does Du Page Water Commission compare with other water systems in DuPage County?
By EPA's size categories, Du Page Water Commission is a very small system (500 people or fewer). DuPage County has 125 active public water systems. Its population served is well below the county average of 6,865 people per system, and accounts for less than 0.1% of the 858,100 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 Du Page Water Commission 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 surface water means the system buys surface water from another public water system rather than drawing its own. 619 Illinois systems (16%) list purchased surface water as their primary source.
Who owns and regulates Du Page Water Commission?
EPA lists Du Page Water Commission as owned by a local 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. 32 of the 125 active systems in DuPage County (26%) are also owned by a local government.
Does Du Page Water Commission have drinking water violations?
EPA's records list 2 violations for this system; none is health-based, and the most recent began in March 1998. The violations listed here began between November 1992 and March 1998. By type: 2 monitoring and reporting. The contaminant or rule involved most often is Total coliform bacteria (TCR) (2 of them). EPA lists 2 as archived. Archived means the violation was not marked resolved but is more than five years past the end of the noncompliance period, so it no longer counts toward current compliance status.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 1998-03-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1992-11-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
All 2 violations in EPA's records, newest first.Labels and codes come from EPA's SDWIS reference tables. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found. "Health-based" marks violations of a legal limit or required treatment.
Du Page Water Commission: frequently asked questions
Who runs Du Page Water Commission?
Du Page Water Commission (PWSID IL0435400) is a community water system owned by a local government. It is regulated by the IL state drinking water program.
How many people does Du Page Water Commission serve?
Du Page Water Commission reports serving 1 people through 29 service connections in DuPage County, Illinois.
Where does Du Page Water Commission get its water?
EPA SDWIS lists this system's primary water source as purchased surface water. Purchased surface water means the system buys surface water from another public water system rather than drawing its own.
Does Du Page Water Commission have any drinking water violations?
EPA's records list 2 violations for this system; none is health-based, and the most recent began in March 1998. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found.
Is Du Page Water Commission'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 records list 2 violations for this system; none is health-based, and the most recent began in March 1998. For current results, consult the system's annual water quality report, EPA ECHO, or the IL state drinking water program.
Where can I find Du Page Water Commission's water quality report?
As a community water system, Du Page Water Commission 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 DuPage County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Naperville | DuPage | 156,406 | Community | Purchased surface water |
| Wheaton | DuPage | 53,970 | Community | Purchased surface water |
| Downers Grove | DuPage | 49,425 | Community | Purchased surface water |
| Elmhurst | DuPage | 45,000 | Community | Purchased surface water |
| Lombard | DuPage | 44,476 | Community | Purchased surface water |
| Carol Stream | DuPage | 39,854 | 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, “Du Page Water Commission, PWSID IL0435400, Illinois”, https://aquacensus.com/water-systems/illinois/du-page-water-commission-il0435400 (data as of October 1, 2026).