Public Water Partners

OAK FOREST, IL · Cook County

OAK FOREST Water System

Consumer Confidence Report status

OAK FOREST must publish a Consumer Confidence Report — the annual drinking water quality report covering calendar year 2026 — by July 1, 2027.

As of August 1, 2026, EPA's federal records show 2 items for OAK FOREST that are open and awaiting resolution. None are health-based violations — open items of this kind are most often monitoring or reporting requirements, not water-safety findings.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed August 1, 2026. This is a record-keeping and public-information tool — it does not replace Illinois’s official records. Always confirm current status with Illinois before making decisions based on this information.

System facts

System ID (PWSID)
IL0312190
System type
Community Water System
Population served
27,478
Service connections
8,497
Ownership
local government
Water source
surface water (rivers, lakes, or reservoirs)

OAK FOREST is one of 225 community water systems in Illinois in the 10,001 to 100,000 people size category, serving 27,478 people from surface water.

As of August 1, 2026, its federal record holds 7 entries between 2007 and 2025, of which 2 remain open; none are health-based.

Of the 7, 2 are monitoring and reporting requirements — the category that accounts for about four in five of all violations in EPA's national dataset — rather than findings about the water itself. The record involves the Consumer Confidence Rule and the Lead and Copper Rule.

Violation history

  • Notification, Known or Potential LSL

    —

    LEAD AND COPPER RULE REVISIONS

    July 2, 2025

    Unaddressed

  • Consumer Confidence Report Inadequate Reporting

    —

    Consumer Confidence Rule

    July 1, 2025

    Unaddressed

  • Lead Consumer Notice

    —

    Lead and Copper Rule

    December 30, 2020 – February 3, 2021

    Resolved

  • Consumer Confidence Report Complete Failure to Report

    —

    Consumer Confidence Rule

    July 1, 2016 – August 3, 2016

    Resolved

  • Consumer Confidence Report Complete Failure to Report

    —

    Consumer Confidence Rule

    July 1, 2009 – July 20, 2009

    Resolved

  • Consumer Confidence Report Inadequate Reporting

    —

    Consumer Confidence Rule

    September 3, 2008 – July 20, 2009

    Resolved

  • Consumer Confidence Report Complete Failure to Report

    —

    Consumer Confidence Rule

    July 1, 2007 – July 27, 2007

    Resolved

Unaddressed no corrective action on record yetResolved addressed and confirmed by the state

Enforcement actions

No enforcement actions on record for this system.

Common questions

Is OAK FOREST required to publish a Consumer Confidence Report?

Yes. OAK FOREST is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.

When is OAK FOREST’s next Consumer Confidence Report due?

OAK FOREST’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.

Does OAK FOREST have any open drinking water violations on record?

As of August 1, 2026, EPA's federal records show 2 items for OAK FOREST that are open and awaiting resolution. None are health-based violations — open items of this kind are most often monitoring or reporting requirements, not water-safety findings.

What is a Consumer Confidence Report?

A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.

Contact

SALAMOWICZ, MICHAEL

708-535-4090

OAK FOREST, IL 60452