Public water system · IL1410200
ActiveForreston
At a glance
Forreston (PWSID IL1410200) is an active community water system in Ogle County, Illinois. It reports serving 1,338 people through 650 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 3 violations for this system; none is health-based, and the most recent began in February 1995.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
1,338
Service connections
650
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Forreston compare with other water systems in Ogle County?
By EPA's size categories, Forreston is a small system (501 to 3,300 people). Ogle County has 102 active public water systems. Its population served is about 3.2 times the county average of 412 people per system, and accounts for 3.2% of the 42,013 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 Forreston 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 Forreston?
EPA lists Forreston 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. 15 of the 102 active systems in Ogle County (15%) are also owned by a local government.
Does Forreston have drinking water violations?
EPA's records list 3 violations for this system; none is health-based, and the most recent began in February 1995. The violations listed here began between June 1977 and February 1995. By type: 3 monitoring and reporting. The contaminants or rules involved are Total coliform bacteria (TCR), Lead and Copper Rule and Gross alpha (excluding radon and uranium). EPA lists 2 as archived and 1 as resolved. 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. 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 |
|---|---|---|---|---|
| 1995-02-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1993-10-01 | Monitoring and reportingWater Quality Parameter M/R · code 53 | Lead and Copper Rulecode 5000 | No | Resolved |
| 1977-06-30 | Monitoring and reportingMonitoring, Regular · code 03 | Gross alpha (excluding radon and uranium)code 4000 | No | Archived |
All 3 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.
Forreston: frequently asked questions
Who runs Forreston?
Forreston (PWSID IL1410200) is a community water system owned by a local government. It is regulated by the IL state drinking water program.
How many people does Forreston serve?
Forreston reports serving 1,338 people through 650 service connections in Ogle County, Illinois.
Where does Forreston 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 Forreston have any drinking water violations?
EPA's records list 3 violations for this system; none is health-based, and the most recent began in February 1995. 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 Forreston'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 3 violations for this system; none is health-based, and the most recent began in February 1995. For current results, consult the system's annual water quality report, EPA ECHO, or the IL state drinking water program.
Where can I find Forreston's water quality report?
As a community water system, Forreston 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 Ogle County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Rochelle | Ogle | 9,446 | Community | Groundwater |
| Byron | Ogle | 3,784 | Community | Groundwater |
| Oregon | Ogle | 3,449 | Community | Groundwater |
| Mount Morris | Ogle | 2,861 | Community | Groundwater |
| Polo | Ogle | 2,355 | Community | Groundwater |
| Davis Junction | Ogle | 2,344 | 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, “Forreston, PWSID IL1410200, Illinois”, https://aquacensus.com/water-systems/illinois/forreston-il1410200 (data as of October 1, 2026).