Public water system · IL1890150
ActiveDubois
At a glance
Dubois (PWSID IL1890150) is an active community water system in Washington County, Illinois. It reports serving 200 people through 126 service connections. Its primary water source is purchased surface water, and EPA lists it as owned by a local government. EPA's records list 5 violations for this system; none is health-based, and the most recent began in July 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
200
Service connections
126
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does Dubois compare with other water systems in Washington County?
By EPA's size categories, Dubois is a very small system (500 people or fewer). Washington County has 15 active public water systems. Its population served is well below the county average of 1,367 people per system, and accounts for 1% of the 20,507 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 Dubois 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 Dubois?
EPA lists Dubois 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. 9 of the 15 active systems in Washington County (60%) are also owned by a local government.
Does Dubois have drinking water violations?
EPA's records list 5 violations for this system; none is health-based, and the most recent began in July 2025. The violations listed here began between March 1994 and July 2025. By type: 3 monitoring and reporting, 1 reporting and 1 public notice, recordkeeping or other. The contaminant or rule involved most often is Total coliform bacteria (TCR) (3 of them). EPA lists 3 as resolved, 1 as unaddressed and 1 as archived. Resolved means at least one resolving action is on record: the system returned to compliance, the rule no longer applies, or no further action was needed. Unaddressed means the violation is not resolved or archived and is not yet covered by formal enforcement. 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 |
|---|---|---|---|---|
| 2025-07-02 | ReportingNotification, Known or Potential LSL · code 4H | Lead and Copper Rule Revisionscode 5200 | No | Unaddressed |
| 2006-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2004-12-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2001-12-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1994-03-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
All 5 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.
Dubois: frequently asked questions
Who runs Dubois?
Dubois (PWSID IL1890150) is a community water system owned by a local government. It is regulated by the IL state drinking water program.
How many people does Dubois serve?
Dubois reports serving 200 people through 126 service connections in Washington County, Illinois.
Where does Dubois 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 Dubois have any drinking water violations?
EPA's records list 5 violations for this system; none is health-based, and the most recent began in July 2025. 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 Dubois' 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 5 violations for this system; none is health-based, and the most recent began in July 2025. For current results, consult the system's annual water quality report, EPA ECHO, or the IL state drinking water program.
Where can I find Dubois' water quality report?
As a community water system, Dubois 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 Washington County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Washington County Water Company | Washington | 11,374 | Community | Purchased surface water |
| Nashville | Washington | 3,230 | Community | Surface water |
| Okawville | Washington | 1,457 | Community | Purchased surface water |
| Irvington | Washington | 1,081 | Community | Purchased surface water |
| Hoyleton Rwc | Washington | 1,020 | Community | Purchased surface water |
| Hoyleton | Washington | 658 | 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, “Dubois, PWSID IL1890150, Illinois”, https://aquacensus.com/water-systems/illinois/dubois-il1890150 (data as of October 1, 2026).