GRAYSLAKE, IL · Lake County

GRAYSLAKE Water System

Current status

No open violations on record as of July 4, 2026.

This system's next federally required Consumer Confidence Report is due July 1, 2027, under the EPA's revised reporting rule.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed July 4, 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: 7,024
Ownership: local government
Water source: surface water (rivers, lakes, or reservoirs)

Violation history

Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
September 1, 2000 – September 30, 2000
Archived
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
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
October 1, 1992 – October 31, 1992
Archived
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
September 1, 2000 – September 30, 2000	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
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
October 1, 1992 – October 31, 1992	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
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
November 15, 2000State Violation/Reminder Notice15 linked violations
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
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

Contact

RIGGS, PETER A.

847-223-8515

GRAYSLAKE, IL 60030