Is GRAYSLAKE required to publish a Consumer Confidence Report?

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

GRAYSLAKE’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.

GRAYSLAKE, IL · Lake County

GRAYSLAKE Water System

Consumer Confidence Report status

GRAYSLAKE 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 GRAYSLAKE.

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): IL0970250
System type: Community Water System
Population served: 21,248
Service connections: 7,298
Ownership: local government
Water source: surface water (rivers, lakes, or reservoirs)

GRAYSLAKE is one of 225 community water systems in Illinois in the 10,001 to 100,000 people size category, serving 21,248 people from surface water.

As of August 1, 2026, its federal record holds 5 entries between 1977 and 1999, all of which EPA lists as closed. Nothing has been added since 1999.

Of the 5, 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 Lead and Copper Rule, the Total Coliform Rules, and the Radionuclides and Revised Rad Rule.

Violation history

Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
August 1, 1999 – August 31, 1999
Archived
Water Quality Parameter M/R
—
Lead and Copper Rule
July 1, 1997 – December 31, 1997
Resolved
Public Education
Health-based
Lead and Copper Rule
January 1, 1994 – March 3, 1995
Resolved
OCCT/SOWT Study/Recommendation
Health-based
Lead and Copper Rule
December 21, 1992 – January 3, 1994
Resolved
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
June 30, 1977 – June 29, 1981
Archived

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

Period	Violation	Contaminant / rule	Health-based	Status
August 1, 1999 – August 31, 1999	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
July 1, 1997 – December 31, 1997	Water Quality Parameter M/R	Lead and Copper Rule	—	Resolved
January 1, 1994 – March 3, 1995	Public Education	Lead and Copper Rule	Health-based	Resolved
December 21, 1992 – January 3, 1994	OCCT/SOWT Study/Recommendation	Lead and Copper Rule	Health-based	Resolved
June 30, 1977 – June 29, 1981	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Archived

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

Enforcement actions

June 30, 2001State Compliance achieved1 linked violation
October 15, 1999State Public Notification requested1 linked violation
October 15, 1999State Violation/Reminder Notice1 linked violation
April 19, 1999State Compliance achieved1 linked violation
March 3, 1996State Violation/Reminder Notice2 linked violations
March 3, 1996State Public Notification requested1 linked violation
February 21, 1996State Public Notification received1 linked violation
March 3, 1995State Compliance achieved1 linked violation
January 3, 1994State Compliance achieved1 linked violation
January 3, 1994State Compliance achieved1 linked violation
December 12, 1992State Public Notification requested1 linked violation
December 12, 1992State Violation/Reminder Notice1 linked violation
November 5, 1992State Public Notification received1 linked violation
December 14, 1991State Public Notification requested1 linked violation
December 14, 1991State Violation/Reminder Notice1 linked violation
September 16, 1990State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
September 16, 1990State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record

Common questions

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

RIGGS, PETER A.

847-223-8515

GRAYSLAKE, IL 60030