Public water system · IL0170080
ActiveArenzville Rural Water Cooperative
At a glance
Arenzville Rural Water Cooperative (PWSID IL0170080) is an active community water system in Cass County, Illinois. It reports serving 675 people through 270 service connections. Its primary water source is purchased groundwater, and EPA lists it as privately owned. EPA's records list one violation for this system; it is not health-based, and the most recent began in April 2023.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
675
Service connections
270
Primary source
GWP
Purchased groundwater
System type
CWS
Community water system
System record
How does Arenzville Rural Water Cooperative compare with other water systems in Cass County?
By EPA's size categories, Arenzville Rural Water Cooperative is a small system (501 to 3,300 people). Cass County has 15 active public water systems, and Arenzville Rural Water Cooperative is the 6th-largest of them by population served. Its population served is about 26% below the county average of 918 people per system, and accounts for 4.9% of the 13,767 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 Arenzville Rural Water Cooperative 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 Arenzville Rural Water Cooperative?
EPA lists Arenzville Rural Water Cooperative as privately owned. 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. 8 of the 15 active systems in Cass County (53%) are also privately owned.
Does Arenzville Rural Water Cooperative have drinking water violations?
EPA's records list one violation for this system; it is not health-based, and the most recent began in April 2023. By type: 1 monitoring and reporting. The contaminant or rule involved is Chlorine. EPA lists 1 as resolved. 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.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2023-04-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
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.
Arenzville Rural Water Cooperative: frequently asked questions
Who runs Arenzville Rural Water Cooperative?
Arenzville Rural Water Cooperative (PWSID IL0170080) is a community water system privately owned. It is regulated by the IL state drinking water program.
How many people does Arenzville Rural Water Cooperative serve?
Arenzville Rural Water Cooperative reports serving 675 people through 270 service connections in Cass County, Illinois.
Where does Arenzville Rural Water Cooperative 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 Arenzville Rural Water Cooperative have any drinking water violations?
EPA's records list one violation for this system; it is not health-based, and the most recent began in April 2023. 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 Arenzville Rural Water Cooperative'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 not health-based, and the most recent began in April 2023. For current results, consult the system's annual water quality report, EPA ECHO, or the IL state drinking water program.
Where can I find Arenzville Rural Water Cooperative's water quality report?
As a community water system, Arenzville Rural Water Cooperative 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 Cass County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Beardstown | Cass | 5,951 | Community | Groundwater |
| Jbs Corporation | Cass | 2,000 | Non-transient non-community | Groundwater |
| Virginia | Cass | 1,514 | Community | Groundwater |
| Ashland | Cass | 1,333 | Community | Purchased surface water |
| Chandlerville | Cass | 838 | Community | Groundwater |
| Arenzville | Cass | 419 | Community | Groundwater |
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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, “Arenzville Rural Water Cooperative, PWSID IL0170080, Illinois”, https://aquacensus.com/water-systems/illinois/arenzville-rural-water-cooperative-il0170080 (data as of October 1, 2026).