LAKE ZURICH, IL · Lake County

ACORN ACRES SUBDIVISION Water System

Inactive system

This water system is marked inactive in EPA’s federal records as of December 1, 2004. It is no longer an operating public water system under this PWSID, and no compliance deadlines — including the 2027 Consumer Confidence Report rule — apply to it.

If you are a resident looking for your current water provider, see water systems in Lake County, IL.

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): IL0975020
System type: Community Water System
Population served: 240
Service connections: 26
Ownership: privately owned
Water source: groundwater (wells)

ACORN ACRES SUBDIVISION is one of 1,572 community water systems in Illinois in the 500 or fewer people size category, formerly serving 240 people from groundwater.

EPA's federal records list this system as inactive in 2004; the record below is historical.

As of August 1, 2026, its federal record holds 10 entries between 1977 and 2004, all of which EPA lists as closed. Nothing has been added since 2004.

Of the 10, 4 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 Total Coliform Rules and the Radionuclides and Revised Rad Rule.

Violation history

Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
June 1, 2004 – June 30, 2004
Archived
Maximum Contaminant Level Violation, Acute (TCR)
Health-based
Coliform (TCR)
June 1, 2001 – June 30, 2001
Archived
Monitoring, Repeat Minor (TCR)
—
Coliform (TCR)
July 1, 2000 – July 31, 2000
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
September 1, 1998 – September 30, 1998
Archived
Monitoring, Repeat Minor (TCR)
—
Coliform (TCR)
June 1, 1997 – June 30, 1997
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
June 1, 1997 – June 30, 1997
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
May 1, 1994 – May 31, 1994
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
August 1, 1993 – August 31, 1993
Archived
Monitoring, Repeat Minor (TCR)
—
Coliform (TCR)
August 1, 1993 – August 31, 1993
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)

Period	Violation	Contaminant / rule	Health-based	Status
June 1, 2004 – June 30, 2004	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
June 1, 2001 – June 30, 2001	Maximum Contaminant Level Violation, Acute (TCR)	Coliform (TCR)	Health-based	Archived
July 1, 2000 – July 31, 2000	Monitoring, Repeat Minor (TCR)	Coliform (TCR)	—	Archived
September 1, 1998 – September 30, 1998	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
June 1, 1997 – June 30, 1997	Monitoring, Repeat Minor (TCR)	Coliform (TCR)	—	Archived
June 1, 1997 – June 30, 1997	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
May 1, 1994 – May 31, 1994	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
August 1, 1993 – August 31, 1993	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
August 1, 1993 – August 31, 1993	Monitoring, Repeat Minor (TCR)	Coliform (TCR)	—	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)

Enforcement actions

October 6, 2004State Public Notification requested1 linked violation
October 6, 2004State Violation/Reminder Notice1 linked violation
August 24, 2001State Formal Notice of Violation issued2 linked violations
August 14, 2001State Compliance achieved1 linked violation
December 8, 2000State Bilateral Compliance Agreement signed2 linked violations
November 6, 2000State Formal Notice of Violation issued2 linked violations
September 15, 2000State Violation/Reminder Notice7 linked violations
November 15, 1998State Public Notification requested1 linked violation
November 15, 1998State Violation/Reminder Notice1 linked violation
August 16, 1997State Public Notification requested2 linked violations
August 16, 1997State Violation/Reminder Notice2 linked violations
July 10, 1997State Public Notification received2 linked violations
July 16, 1994State Violation/Reminder Notice1 linked violation
July 16, 1994State Public Notification requested1 linked violation
July 16, 1994State Public Notification requested1 linked violation
July 16, 1994State Violation/Reminder Notice1 linked violation
September 26, 1993State Violation/Reminder Notice2 linked violations
September 26, 1993State Public Notification requested2 linked violations
July 22, 1993State Public Notification received2 linked violations
May 30, 1992State Violation/Reminder Notice1 linked violation
May 30, 1992State Public Notification requested1 linked violation
May 16, 1992State Public Notification received1 linked violation
September 13, 1990State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
September 1, 1990State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
September 1, 1990State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
October 1, 1989State Public Notification requested1 linked violation
September 2, 1989State Public Notification requested2 linked violations

Last known contact on file (system is inactive)

Not on record

847-540-8338

LAKE ZURICH, IL 60047