Is RIVERDALE required to publish a Consumer Confidence Report?

Yes. RIVERDALE 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 RIVERDALE’s next Consumer Confidence Report due?

RIVERDALE’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.

RIVERDALE, IL · Cook County

RIVERDALE Water System

Consumer Confidence Report status

RIVERDALE 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 RIVERDALE.

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): IL0312580
System type: Community Water System
Population served: 10,266
Service connections: 3,311
Ownership: local government
Water source: surface water (rivers, lakes, or reservoirs)

RIVERDALE is one of 225 community water systems in Illinois in the 10,001 to 100,000 people size category, serving 10,266 people from surface water.

As of August 1, 2026, its federal record holds 9 entries between 1992 and 2011, all of which EPA lists as closed. Nothing has been added since 2011.

Of the 9, 3 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 and the Consumer Confidence Rule.

Violation history

Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2011 – July 22, 2011
Resolved
Consumer Confidence Report Inadequate Reporting
—
Consumer Confidence Rule
July 1, 2004 – November 1, 2004
Resolved
WQP Entry Point/Tap Treatment Technique Non-Compliance
Health-based
Lead and Copper Rule
January 1, 2000 – March 31, 2000
Resolved
Water Quality Parameter M/R
—
Lead and Copper Rule
January 1, 1998 – June 30, 1998
Resolved
Water Quality Parameter M/R
—
Lead and Copper Rule
January 1, 1997 – June 30, 1997
Resolved
Public Education
Health-based
Lead and Copper Rule
January 1, 1994 – February 5, 1995
Resolved
Public Education
Health-based
Lead and Copper Rule
January 1, 1993 – February 5, 1995
Resolved
OCCT/SOWT Study/Recommendation
Health-based
Lead and Copper Rule
December 7, 1992 – July 21, 1994
Resolved
Water Quality Parameter M/R
—
Lead and Copper Rule
April 1, 1992 – September 30, 1992
Resolved

Resolved addressed and confirmed by the state

Period	Violation	Contaminant / rule	Health-based	Status
July 1, 2011 – July 22, 2011	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
July 1, 2004 – November 1, 2004	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	—	Resolved
January 1, 2000 – March 31, 2000	WQP Entry Point/Tap Treatment Technique Non-Compliance	Lead and Copper Rule	Health-based	Resolved
January 1, 1998 – June 30, 1998	Water Quality Parameter M/R	Lead and Copper Rule	—	Resolved
January 1, 1997 – June 30, 1997	Water Quality Parameter M/R	Lead and Copper Rule	—	Resolved
January 1, 1994 – February 5, 1995	Public Education	Lead and Copper Rule	Health-based	Resolved
January 1, 1993 – February 5, 1995	Public Education	Lead and Copper Rule	Health-based	Resolved
December 7, 1992 – July 21, 1994	OCCT/SOWT Study/Recommendation	Lead and Copper Rule	Health-based	Resolved
April 1, 1992 – September 30, 1992	Water Quality Parameter M/R	Lead and Copper Rule	—	Resolved

Resolved addressed and confirmed by the state

Enforcement actions

August 11, 2025State Violation/Reminder Notice1 linked violation
August 9, 2011State Violation/Reminder Notice1 linked violation
July 22, 2011State Compliance achieved1 linked violation
January 30, 2008State Violation/Reminder Notice1 linked violation
January 11, 2008State Compliance achieved1 linked violation
April 16, 1999State Compliance achieved1 linked violation
April 9, 1998State Compliance achieved1 linked violation
August 31, 1996State Public Notification requested1 linked violation
August 31, 1996State Violation/Reminder Notice1 linked violation
July 3, 1996State Public Notification received1 linked violation
December 31, 1995State Compliance achieved1 linked violation
February 22, 1995State Public Notification received1 linked violation
February 5, 1995State Compliance achieved2 linked violations
February 4, 1995State Public Notification requested1 linked violation
February 4, 1995State Violation/Reminder Notice1 linked violation
July 21, 1994State Compliance achieved1 linked violation
July 21, 1994State Compliance achieved1 linked violation
March 24, 1994State Public Notification requested1 linked violation
March 24, 1994State Violation/Reminder Notice1 linked violation
March 24, 1994State Public Notification requested1 linked violation
March 24, 1994State Violation/Reminder Notice2 linked violations
November 13, 1991State Public Notification received1 linked violation
November 9, 1991State Public Notification requested1 linked violation
November 9, 1991State Violation/Reminder Notice1 linked violation

Common questions

Is RIVERDALE required to publish a Consumer Confidence Report?: Yes. RIVERDALE 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 RIVERDALE’s next Consumer Confidence Report due?: RIVERDALE’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does RIVERDALE have any open drinking water violations on record?: As of August 1, 2026, EPA's federal records show no open violations for RIVERDALE.
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

HENNING, TODD C.

708-896-7601

RIVERDALE, IL 60827