Is GREEN OAKS required to publish a Consumer Confidence Report?

Yes. GREEN OAKS 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 GREEN OAKS’s next Consumer Confidence Report due?

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

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.

GREEN OAKS, IL · Lake County

GREEN OAKS Water System

Consumer Confidence Report status

GREEN OAKS 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 1 open health-based violation for GREEN OAKS, alongside 2 other open items.

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): IL0970040
System type: Community Water System
Population served: 1,470
Service connections: 490
Ownership: local government
Water source: surface water (rivers, lakes, or reservoirs)

GREEN OAKS is one of 773 community water systems in Illinois in the 501 to 3,300 people size category, serving 1,470 people from surface water.

As of August 1, 2026, its federal record holds 10 entries between 1995 and 2025, of which 1 health-based item remains open, alongside 2 other open entries.

Of the 10, 7 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 Lead and Copper Rule, the Total Coliform Rules, and the Public Notice Rule and Revised PN Rule.

Violation history

Public Notification Violation for NPDWR Violation
—
Public Notice
August 22, 2025 – January 12, 2026
Resolved
Notification, Known or Potential LSL
—
LEAD AND COPPER RULE REVISIONS
July 2, 2025
Unaddressed
LSL Inventory
Health-based
LEAD AND COPPER RULE REVISIONS
October 17, 2024
Unaddressed
LSL Reporting
—
LEAD AND COPPER RULE REVISIONS
October 17, 2024
Unaddressed
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
December 1, 2009 – December 31, 2009
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
October 1, 2009 – December 31, 2009
Resolved
OCCT/SOWT Study/Recommendation
Health-based
Lead and Copper Rule
December 22, 1997 – March 29, 2000
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
April 1, 1997 – April 30, 1997
Archived
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
January 1, 1996 – June 30, 1996
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
April 1, 1995 – April 30, 1995
Archived

Resolved addressed and confirmed by the stateUnaddressed no corrective action on record yetArchived closed in EPA's records (typically due to age or a data correction)

Period	Violation	Contaminant / rule	Health-based	Status
August 22, 2025 – January 12, 2026	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
July 2, 2025	Notification, Known or Potential LSL	LEAD AND COPPER RULE REVISIONS	—	Unaddressed
October 17, 2024	LSL Inventory	LEAD AND COPPER RULE REVISIONS	Health-based	Unaddressed
October 17, 2024	LSL Reporting	LEAD AND COPPER RULE REVISIONS	—	Unaddressed
December 1, 2009 – December 31, 2009	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
October 1, 2009 – December 31, 2009	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
December 22, 1997 – March 29, 2000	OCCT/SOWT Study/Recommendation	Lead and Copper Rule	Health-based	Resolved
April 1, 1997 – April 30, 1997	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived
January 1, 1996 – June 30, 1996	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Resolved
April 1, 1995 – April 30, 1995	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived

Resolved addressed and confirmed by the stateUnaddressed no corrective action on record yetArchived closed in EPA's records (typically due to age or a data correction)

Enforcement actions

January 26, 2026State Public Notification received1 linked violation
January 26, 2026State Public Notification received1 linked violation
January 12, 2026State Compliance achieved1 linked violation
September 24, 2025State Violation/Reminder Notice1 linked violation
September 16, 2025State Compliance achieved1 linked violation
August 27, 2025State Violation/Reminder Notice1 linked violation
July 22, 2025State Public Notification requested1 linked violation
July 22, 2025State Violation/Reminder Notice2 linked violations
July 3, 2025State Violation/Reminder Notice1 linked violation
July 3, 2025State Public Notification requested1 linked violation
July 2, 2025State Public Notification requested1 linked violation
July 2, 2025State Violation/Reminder Notice1 linked violation
July 1, 2010State Compliance achieved1 linked violation
June 25, 2010State Public Notification received3 linked violations
February 4, 2010State Compliance achieved1 linked violation
January 12, 2010State Violation/Reminder Notice1 linked violation
January 12, 2010State Public Notification requested1 linked violation
January 12, 2010State Violation/Reminder Notice1 linked violation
January 12, 2010State Public Notification requested1 linked violation
June 28, 1997State Public Notification requested1 linked violation
June 28, 1997State Violation/Reminder Notice1 linked violation
June 17, 1997State Public Notification received1 linked violation
June 30, 1996State Compliance achieved1 linked violation
June 24, 1995State Public Notification requested1 linked violation
June 24, 1995State Violation/Reminder Notice1 linked violation

Common questions

Is GREEN OAKS required to publish a Consumer Confidence Report?: Yes. GREEN OAKS 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 GREEN OAKS’s next Consumer Confidence Report due?: GREEN OAKS’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does GREEN OAKS have any open drinking water violations on record?: As of August 1, 2026, EPA's federal records show 1 open health-based violation for GREEN OAKS, alongside 2 other open items.
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

KAFKIS, DENISE

847-362-5363

GREEN OAKS, IL 60048