Public water system · IL1970410
ActiveAqua Illinois-Timber Ridge
At a glance
Aqua Illinois-Timber Ridge (PWSID IL1970410) is an active community water system in Cook County, Illinois. It reports serving 2,322 people through 711 service connections. Its primary water source is purchased groundwater, and EPA lists it as privately owned. EPA's Safe Drinking Water Act records list no violations for this system.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
2,322
Service connections
711
Primary source
GWP
Purchased groundwater
System type
CWS
Community water system
System record
How does Aqua Illinois-Timber Ridge compare with other water systems in Cook County?
By EPA's size categories, Aqua Illinois-Timber Ridge is a small system (501 to 3,300 people). Cook County has 251 active public water systems. Its population served is well below the county average of 20,993 people per system, and accounts for less than 0.1% 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 Aqua Illinois-Timber Ridge is about 65% 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. Purchased groundwater means the system buys groundwater from another public water system rather than drawing its own. 348 Illinois systems (9%) list purchased groundwater as their primary source.
Who owns and regulates Aqua Illinois-Timber Ridge?
EPA lists Aqua Illinois-Timber Ridge 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 Aqua Illinois-Timber Ridge have drinking water violations?
No SDWA violations on record.
EPA's SDWA violation and enforcement data (via EPA ECHO, updated quarterly) lists no violations for Aqua Illinois-Timber Ridge. For the latest compliance status, check EPA ECHO for current compliance history.
Aqua Illinois-Timber Ridge: frequently asked questions
Who runs Aqua Illinois-Timber Ridge?
Aqua Illinois-Timber Ridge (PWSID IL1970410) is a community water system privately owned. It is regulated by the IL state drinking water program.
How many people does Aqua Illinois-Timber Ridge serve?
Aqua Illinois-Timber Ridge reports serving 2,322 people through 711 service connections in Cook County, Illinois.
Where does Aqua Illinois-Timber Ridge get its water?
EPA SDWIS lists this system's primary water source as purchased groundwater. Purchased groundwater means the system buys groundwater from another public water system rather than drawing its own.
Does Aqua Illinois-Timber Ridge have any drinking water violations?
EPA's Safe Drinking Water Act records list no violations for this system.
Is Aqua Illinois-Timber Ridge'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 Safe Drinking Water Act records list no violations for this system. For current results, consult the system's annual water quality report, EPA ECHO, or the IL state drinking water program.
Where can I find Aqua Illinois-Timber Ridge's water quality report?
As a community water system, Aqua Illinois-Timber Ridge 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 |
Related pages
Working with water-system records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
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, “Aqua Illinois-Timber Ridge, PWSID IL1970410, Illinois”, https://aquacensus.com/water-systems/illinois/aqua-illinois-timber-ridge-il1970410 (data as of October 1, 2026).