Public water system · IL0430040
ActiveHobson Valley Water System
At a glance
Hobson Valley Water System (PWSID IL0430040) is an active community water system in DuPage County, Illinois. It reports serving 400 people through 141 service connections. Its primary water source is purchased surface water, and EPA lists it as owned by a local government. EPA's records list one violation for this system; it is health-based, and the most recent began in August 2001.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
400
Service connections
141
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does Hobson Valley Water System compare with other water systems in DuPage County?
By EPA's size categories, Hobson Valley Water System 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 Hobson Valley Water System 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 Hobson Valley Water System?
EPA lists Hobson Valley Water System 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 Hobson Valley Water System have drinking water violations?
EPA's records list one violation for this system; it is health-based, and the most recent began in August 2001. By type: 1 contaminant level above the legal limit. The contaminant or rule involved is Total coliform bacteria (TCR). EPA lists 1 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 |
|---|---|---|---|---|
| 2001-08-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Archived |
The one violation in EPA's records.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.
Hobson Valley Water System: frequently asked questions
Who runs Hobson Valley Water System?
Hobson Valley Water System (PWSID IL0430040) is a community water system owned by a local government. It is regulated by the IL state drinking water program.
How many people does Hobson Valley Water System serve?
Hobson Valley Water System reports serving 400 people through 141 service connections in DuPage County, Illinois.
Where does Hobson Valley Water System 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 Hobson Valley Water System have any drinking water violations?
EPA's records list one violation for this system; it is health-based, and the most recent began in August 2001. 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 Hobson Valley Water System'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 one violation for this system; it is health-based, and the most recent began in August 2001. For current results, consult the system's annual water quality report, EPA ECHO, or the IL state drinking water program.
Where can I find Hobson Valley Water System's water quality report?
As a community water system, Hobson Valley Water System 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 |
Related pages
Working with water-system records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
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, “Hobson Valley Water System, PWSID IL0430040, Illinois”, https://aquacensus.com/water-systems/illinois/hobson-valley-water-system-il0430040 (data as of October 1, 2026).