Public water system · IL1955040
ActiveIl American-Sterling
At a glance
Il American-Sterling (PWSID IL1955040) is an active community water system in Whiteside County, Illinois. It reports serving 14,782 people through 6,608 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 3 violations for this system; 1 is health-based, and the most recent began in July 2000.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
14,782
Service connections
6,608
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Il American-Sterling compare with other water systems in Whiteside County?
By EPA's size categories, Il American-Sterling is a large system (10,001 to 100,000 people). Whiteside County has 59 active public water systems, and Il American-Sterling is the largest of them by population served. Its population served is about 21 times the county average of 696 people per system, and accounts for 36% of the 41,082 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 Il American-Sterling is about 121% above 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 Il American-Sterling?
EPA lists Il American-Sterling 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. 44 of the 59 active systems in Whiteside County (75%) are also privately owned.
Does Il American-Sterling have drinking water violations?
EPA's records list 3 violations for this system; 1 is health-based, and the most recent began in July 2000. The violations listed here began between June 1977 and July 2000. By type: 2 monitoring and reporting and 1 contaminant level above the legal limit. The contaminant or rule involved most often is Total coliform bacteria (TCR) (2 of them). EPA lists 3 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 |
|---|---|---|---|---|
| 2000-07-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1999-02-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Archived |
| 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.
Il American-Sterling: frequently asked questions
Who runs Il American-Sterling?
Il American-Sterling (PWSID IL1955040) is a community water system privately owned. It is regulated by the IL state drinking water program.
How many people does Il American-Sterling serve?
Il American-Sterling reports serving 14,782 people through 6,608 service connections in Whiteside County, Illinois.
Where does Il American-Sterling 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 Il American-Sterling have any drinking water violations?
EPA's records list 3 violations for this system; 1 is health-based, and the most recent began in July 2000. 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 Il American-Sterling'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; 1 is health-based, and the most recent began in July 2000. For current results, consult the system's annual water quality report, EPA ECHO, or the IL state drinking water program.
Where can I find Il American-Sterling's water quality report?
As a community water system, Il American-Sterling 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 Whiteside County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Rock Falls | Whiteside | 8,620 | Community | Groundwater |
| Morrison | Whiteside | 4,188 | Community | Groundwater |
| Fulton | Whiteside | 3,346 | Community | Groundwater |
| Prophetstown | Whiteside | 2,100 | Community | Groundwater |
| Erie | Whiteside | 1,479 | Community | Groundwater |
| Albany | Whiteside | 846 | 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, “Il American-Sterling, PWSID IL1955040, Illinois”, https://aquacensus.com/water-systems/illinois/il-american-sterling-il1955040 (data as of October 1, 2026).