Public water system · IL0170010
ActiveCass Rural Water District
At a glance
Cass Rural Water District (PWSID IL0170010) is an active community water system in Cass County, Illinois. It reports serving 403 people through 161 service connections. Its primary water source is purchased groundwater, and EPA lists it as owned by a local government. EPA's Safe Drinking Water Act records list no violations for this system.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
403
Service connections
161
Primary source
GWP
Purchased groundwater
System type
CWS
Community water system
System record
How does Cass Rural Water District compare with other water systems in Cass County?
By EPA's size categories, Cass Rural Water District is a very small system (500 people or fewer). Cass County has 15 active public water systems. Its population served is about 56% below the county average of 918 people per system, and accounts for 2.9% 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 Cass Rural Water District 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 Cass Rural Water District?
EPA lists Cass Rural Water District 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. 7 of the 15 active systems in Cass County (47%) are also owned by a local government.
Does Cass Rural Water District 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 Cass Rural Water District. For the latest compliance status, check EPA ECHO for current compliance history.
Cass Rural Water District: frequently asked questions
Who runs Cass Rural Water District?
Cass Rural Water District (PWSID IL0170010) is a community water system owned by a local government. It is regulated by the IL state drinking water program.
How many people does Cass Rural Water District serve?
Cass Rural Water District reports serving 403 people through 161 service connections in Cass County, Illinois.
Where does Cass Rural Water District 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 Cass Rural Water District have any drinking water violations?
EPA's Safe Drinking Water Act records list no violations for this system.
Is Cass Rural Water District'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 Cass Rural Water District's water quality report?
As a community water system, Cass Rural Water District 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 Rural Water Cooperative | Cass | 675 | Community | Purchased 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, “Cass Rural Water District, PWSID IL0170010, Illinois”, https://aquacensus.com/water-systems/illinois/cass-rural-water-district-il0170010 (data as of October 1, 2026).