Public water system · IL2010050
ActiveCherry Valley
At a glance
Cherry Valley (PWSID IL2010050) is an active community water system in Winnebago County, Illinois. It reports serving 4,731 people through 2,408 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 6 violations for this system; 2 are health-based, and the most recent began in July 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
4,731
Service connections
2,408
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Cherry Valley compare with other water systems in Winnebago County?
By EPA's size categories, Cherry Valley is a medium system (3,301 to 10,000 people). Winnebago County has 137 active public water systems, and Cherry Valley is the 6th-largest of them by population served. Its population served is about 157% above the county average of 1,841 people per system, and accounts for 1.9% of the 252,201 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 Cherry Valley is about 29% 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 Cherry Valley?
EPA lists Cherry Valley 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. 19 of the 137 active systems in Winnebago County (14%) are also owned by a local government.
Does Cherry Valley have drinking water violations?
EPA's records list 6 violations for this system; 2 are health-based, and the most recent began in July 2025. The violations listed here began between April 2004 and July 2025. By type: 2 public notice, recordkeeping or other, 2 contaminant level above the legal limit, 1 reporting and 1 monitoring and reporting. The contaminant or rule involved most often is Consumer Confidence Rule (2 of them). EPA lists 3 as resolved, 2 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 |
| 2025-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72 | Consumer Confidence Rulecode 7000 | No | Unaddressed |
| 2022-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2021-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Combined Radium (-226 and -228)code 4010 | Yes | Resolved |
| 2021-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Combined Radium (-226 and -228)code 4010 | Yes | Resolved |
| 2004-04-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Archived |
All 6 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.
Cherry Valley: frequently asked questions
Who runs Cherry Valley?
Cherry Valley (PWSID IL2010050) is a community water system owned by a local government. It is regulated by the IL state drinking water program.
How many people does Cherry Valley serve?
Cherry Valley reports serving 4,731 people through 2,408 service connections in Winnebago County, Illinois.
Where does Cherry Valley 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 Cherry Valley have any drinking water violations?
EPA's records list 6 violations for this system; 2 are 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 Cherry Valley'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 6 violations for this system; 2 are 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 Cherry Valley's water quality report?
As a community water system, Cherry Valley 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 Winnebago County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Rockford | Winnebago | 147,051 | Community | Groundwater |
| North Park PWD | Winnebago | 35,580 | Community | Groundwater |
| Loves Park | Winnebago | 23,335 | Community | Groundwater |
| Il American-South Beloit | Winnebago | 7,893 | Community | Purchased groundwater |
| Rockton | Winnebago | 7,685 | Community | Groundwater |
| Winnebago | Winnebago | 2,940 | 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, “Cherry Valley, PWSID IL2010050, Illinois”, https://aquacensus.com/water-systems/illinois/cherry-valley-il2010050 (data as of October 1, 2026).