Public Water Partners

TECHNY, IL · Cook County

GLENBROOK SD Water System

Consumer Confidence Report status

GLENBROOK SD 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 no open violations for GLENBROOK SD.

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)
IL0315310
System type
Community Water System
Population served
822
Service connections
337
Ownership
local government
Water source
surface water (rivers, lakes, or reservoirs)

GLENBROOK SD is one of 773 community water systems in Illinois in the 501 to 3,300 people size category, serving 822 people from surface water.

As of August 1, 2026, its federal record holds 8 entries between 1994 and 2011, all of which EPA lists as closed. Nothing has been added since 2011.

Of the 8, 6 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 Total Coliform Rules, the Lead and Copper Rule, and the Surface Water Treatment Rules.

Violation history

  • Follow-up Or Routine LCR Tap M/R

    —

    Lead and Copper Rule

    October 1, 2011 – July 30, 2012

    Resolved

  • Water Quality Parameter M/R

    —

    Lead and Copper Rule

    July 1, 2007 – December 31, 2007

    Resolved

  • Single Turbidity Exceed (Enhanced SWTR)

    Health-based

    Interim Enhanced Surface Water Treatment Rule

    April 1, 2005 – April 30, 2005

    Resolved

  • Monitoring, Routine Major (TCR)

    —

    Coliform (TCR)

    April 1, 2005 – April 30, 2005

    Resolved

  • Monitoring, Routine Major (TCR)

    —

    Coliform (TCR)

    October 1, 2001 – October 31, 2001

    Archived

  • Monitoring, Routine Major (TCR)

    —

    Coliform (TCR)

    September 1, 2001 – September 30, 2001

    Archived

  • Monitoring, Routine Major (TCR)

    —

    Coliform (TCR)

    August 1, 2001 – August 31, 2001

    Archived

  • OCCT/SOWT Study/Recommendation

    Health-based

    Lead and Copper Rule

    January 1, 1994 – December 27, 1994

    Resolved

Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)

Enforcement actions

Common questions

Is GLENBROOK SD required to publish a Consumer Confidence Report?

Yes. GLENBROOK SD 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 GLENBROOK SD’s next Consumer Confidence Report due?

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

Does GLENBROOK SD have any open drinking water violations on record?

As of August 1, 2026, EPA's federal records show no open violations for GLENBROOK SD.

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

LOPEZ, KENNETH J.

847-604-8280

TECHNY, IL 60062-0523