Public water system · IL0315150
ActiveIl American-Chicago Suburban
At a glance
Il American-Chicago Suburban (PWSID IL0315150) is an active community water system in Cook County, Illinois. It reports serving 11,187 people through 4,488 service connections. Its primary water source is purchased surface water, and EPA lists it as privately owned. EPA's records list 7 violations for this system; 4 are health-based, and the most recent began in February 1995.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
11,187
Service connections
4,488
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does Il American-Chicago Suburban compare with other water systems in Cook County?
By EPA's size categories, Il American-Chicago Suburban is a large system (10,001 to 100,000 people). Cook County has 251 active public water systems. Its population served is about half of the county average of 20,993 people per system, and accounts for 0.2% of the 5,269,212 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-Chicago Suburban is about 67% 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. Purchased surface water means the system buys surface water from another public water system rather than drawing its own. 619 Illinois systems (16%) list purchased surface water as their primary source.
Who owns and regulates Il American-Chicago Suburban?
EPA lists Il American-Chicago Suburban 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. 108 of the 251 active systems in Cook County (43%) are also privately owned.
Does Il American-Chicago Suburban have drinking water violations?
EPA's records list 7 violations for this system; 4 are health-based, and the most recent began in February 1995. The violations listed here began between June 1977 and February 1995. By type: 4 contaminant level above the legal limit and 3 monitoring and reporting. The contaminant or rule involved most often is Gross alpha (excluding radon and uranium) (3 of them). EPA lists 4 as resolved and 3 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. 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 |
|---|---|---|---|---|
| 1995-02-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1994-01-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 1989-12-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Combined Radium (-226 and -228)code 4010 | Yes | Resolved |
| 1985-12-09 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Combined Radium (-226 and -228)code 4010 | Yes | Resolved |
| 1985-12-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Gross alpha (excluding radon and uranium)code 4000 | Yes | Resolved |
| 1981-12-02 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Gross alpha (excluding radon and uranium)code 4000 | Yes | Archived |
| 1977-06-30 | Monitoring and reportingMonitoring, Regular · code 03 | Gross alpha (excluding radon and uranium)code 4000 | No | Archived |
All 7 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-Chicago Suburban: frequently asked questions
Who runs Il American-Chicago Suburban?
Il American-Chicago Suburban (PWSID IL0315150) is a community water system privately owned. It is regulated by the IL state drinking water program.
How many people does Il American-Chicago Suburban serve?
Il American-Chicago Suburban reports serving 11,187 people through 4,488 service connections in Cook County, Illinois.
Where does Il American-Chicago Suburban get its water?
EPA SDWIS lists this system's primary water source as purchased surface water. Purchased surface water means the system buys surface water from another public water system rather than drawing its own.
Does Il American-Chicago Suburban have any drinking water violations?
EPA's records list 7 violations for this system; 4 are 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 Il American-Chicago Suburban'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 7 violations for this system; 4 are 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 Il American-Chicago Suburban's water quality report?
As a community water system, Il American-Chicago Suburban 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 Cook County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Chicago | Cook | 2,721,308 | Community | Surface water |
| Cicero | Cook | 83,000 | Community | Purchased surface water |
| Schaumburg | Cook | 75,750 | Community | Purchased surface water |
| Evanston | Cook | 74,486 | Community | Surface water |
| Arlington Heights | Cook | 73,320 | Community | Purchased surface water |
| Palatine | Cook | 70,875 | Community | Purchased surface water |
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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-Chicago Suburban, PWSID IL0315150, Illinois”, https://aquacensus.com/water-systems/illinois/il-american-chicago-suburban-il0315150 (data as of October 1, 2026).