GRAYSLAKE

Illinois — Community Water System — PWSID: IL0970250

System Information

PWSID	IL0970250
System Name	GRAYSLAKE
System Type	Community Water System
Water Source	Surface Water Purchased
Activity Status	Active
Owner Type	Local
EPA Region	05
Serves School	No
Wholesaler	No
First Reported	Feb 13, 1981
Last Reported	Dec 4, 2025

Location & Contact

State	Illinois
City	GRAYSLAKE
ZIP Code	60030
Address	10 SOUTH SEYMOUR AVENUE
Organization	RIGGS, PETER A.
Phone	847-223-8515

Population & Service

Population Served	21,248
Service Connections	7,024

Drinking Water Violations (23)

This water system has 23 violations recorded in the EPA SDWIS database.

Begin Date	End Date	Contaminant	Category	Health-Based	Major	Measured	Federal MCL	State MCL	Status	Return to Compliance	Rule
Jul 1, 2006	Dec 31, 2006	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Dec 31, 2006	Lead and Copper Rule
Jul 1, 2006	Dec 31, 2006	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Dec 31, 2006	Lead and Copper Rule
Sep 1, 2000	Sep 30, 2000	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Archived	Sep 30, 2000	Total Coliform Rule
Sep 1, 2000	Sep 30, 2000	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Archived	Sep 30, 2000	Total Coliform Rule
Jul 1, 2000	Dec 31, 2000	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Dec 31, 2000	Lead and Copper Rule
Aug 1, 1999	Aug 31, 1999	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Archived	Aug 31, 1999	Total Coliform Rule
Aug 1, 1999	Aug 31, 1999	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Archived	Aug 31, 1999	Total Coliform Rule
Jul 1, 1997	Dec 31, 1997	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Dec 31, 1997	Lead and Copper Rule
Dec 1, 1995	Dec 31, 1995	Coliform (TCR)	MR	No	No	—	5% of samples	—	Archived	Dec 31, 1995	Total Coliform Rule
Dec 1, 1995	Dec 31, 1995	Coliform (TCR)	MR	No	No	—	5% of samples	—	Archived	Dec 31, 1995	Total Coliform Rule
Dec 1, 1995	Dec 31, 1995	Coliform (TCR)	MR	No	No	—	5% of samples	—	Archived	Dec 31, 1995	Total Coliform Rule
Jan 1, 1994	—	Lead and Copper Rule	TT	Yes	No	—	TT	—	Resolved	Mar 3, 1995	Lead and Copper Rule
Jan 1, 1994	—	Lead and Copper Rule	TT	Yes	No	—	TT	—	Resolved	Mar 3, 1995	Lead and Copper Rule
Dec 21, 1992	—	Lead and Copper Rule	TT	Yes	No	—	TT	—	Resolved	Jan 3, 1994	Lead and Copper Rule
Dec 21, 1992	—	Lead and Copper Rule	TT	Yes	No	—	TT	—	Resolved	Jan 3, 1994	Lead and Copper Rule
Oct 1, 1992	Oct 31, 1992	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Archived	Oct 31, 1992	Total Coliform Rule
Oct 1, 1992	Oct 31, 1992	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Archived	Oct 31, 1992	Total Coliform Rule
Oct 1, 1992	Oct 31, 1992	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Archived	Oct 31, 1992	Total Coliform Rule
Oct 1, 1991	Oct 31, 1991	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Archived	Oct 31, 1991	Total Coliform Rule
Oct 1, 1991	Oct 31, 1991	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Archived	Oct 31, 1991	Total Coliform Rule
Jun 30, 1977	Jun 29, 1981	Gross Alpha, Excl. Radon and U	MR	No	No	—	15 pCi/L	—	Archived	Jun 29, 1981	Radionuclides and Revised Rad Rule
—	—		—	No	No	—	—	—	—	—	—
—	—		—	No	No	—	—	—	—	—	—

About This Water System

Public water system data comes from the EPA Safe Drinking Water Information System (SDWIS). Systems with violations must notify customers. Contact your water utility for the latest annual water quality report.

Browse All Water Systems Water Safety Stats Water Safety Home

Browse All Water Systems Water Systems in Illinois