Public water system · IL0195425
ActiveWalnut Grove Mhc
At a glance
Walnut Grove Mhc (PWSID IL0195425) is an active community water system in Champaign County, Illinois. It reports serving 40 people through 20 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in January 2026.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
40
Service connections
20
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Walnut Grove Mhc compare with other water systems in Champaign County?
By EPA's size categories, Walnut Grove Mhc is a very small system (500 people or fewer). Champaign County has 66 active public water systems. Its population served is well below the county average of 3,158 people per system, and accounts for less than 0.1% of the 208,407 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 Walnut Grove Mhc 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. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 2,808 Illinois systems (73%) list groundwater as their primary source.
Who owns and regulates Walnut Grove Mhc?
EPA lists Walnut Grove Mhc 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. 45 of the 66 active systems in Champaign County (68%) are also privately owned.
Does Walnut Grove Mhc have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in January 2026. The violations listed here began between January 2026 and January 2026. By type: 12 monitoring and reporting. The contaminants or rules involved are 1,2-Dichloropropane, Carbofuran, Ethylene dibromide (EDB) and cis-1,2-Dichloroethylene. EPA lists 12 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 |
|---|---|---|---|---|
| 2026-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,2-Dichloropropanecode 2983 | No | Archived |
| 2026-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Carbofurancode 2046 | No | Archived |
| 2026-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Ethylene dibromide (EDB)code 2946 | No | Archived |
| 2026-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | cis-1,2-Dichloroethylenecode 2380 | No | Archived |
| 2026-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Di(2-ethylhexyl) adipatecode 2035 | No | Archived |
| 2026-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Picloramcode 2040 | No | Archived |
| 2026-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Trichloroethylenecode 2984 | No | Archived |
| 2026-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Endothallcode 2033 | No | Archived |
| 2026-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Atrazinecode 2050 | No | Archived |
| 2026-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Heptachlorcode 2065 | No | Archived |
| 2026-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Lindane (gamma-BHC)code 2010 | No | Archived |
| 2026-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,1,1-Trichloroethanecode 2981 | No | Archived |
The 12 most recent 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.
Walnut Grove Mhc: frequently asked questions
Who runs Walnut Grove Mhc?
Walnut Grove Mhc (PWSID IL0195425) is a community water system privately owned. It is regulated by the IL state drinking water program.
How many people does Walnut Grove Mhc serve?
Walnut Grove Mhc reports serving 40 people through 20 service connections in Champaign County, Illinois.
Where does Walnut Grove Mhc get its water?
EPA SDWIS lists this system's primary water source as groundwater. Groundwater means the system draws its water from wells or springs fed by underground aquifers.
Does Walnut Grove Mhc have any drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in January 2026. 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 Walnut Grove Mhc'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. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in January 2026. For current results, consult the system's annual water quality report, EPA ECHO, or the IL state drinking water program.
Where can I find Walnut Grove Mhc's water quality report?
As a community water system, Walnut Grove Mhc 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 Champaign County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Il American-Champaign | Champaign | 150,000 | Community | Groundwater |
| U of I-Champaign | Champaign | 13,000 | Community | Purchased groundwater |
| Rantoul | Champaign | 13,000 | Community | Groundwater |
| Mahomet | Champaign | 6,580 | Community | Groundwater |
| Sangamon Valley PWD | Champaign | 5,300 | Community | Groundwater |
| Il American-Tolono | Champaign | 3,604 | 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, “Walnut Grove Mhc, PWSID IL0195425, Illinois”, https://aquacensus.com/water-systems/illinois/walnut-grove-mhc-il0195425 (data as of October 1, 2026).