WARREN TWP, IL · Lake County

COLONIAL PARK APTS Water System

Inactive system

This water system is marked inactive in EPA’s federal records as of August 1, 1991. 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): IL0975170
System type: Community Water System
Population served: 800
Service connections: 320
Ownership: privately owned
Water source: groundwater (wells)

COLONIAL PARK APTS is one of 773 community water systems in Illinois in the 501 to 3,300 people size category, formerly serving 800 people from groundwater.

EPA's federal records list this system as inactive in 1991; the record below is historical.

As of August 1, 2026, its federal record holds 10 entries between 1989 and 1991, all of which EPA lists as closed. Nothing has been added since 1991.

All 10 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 volatile organic chemicals, the Total Coliform Rules, and the Radionuclides and Revised Rad Rule.

Violation history

Monitoring, Routine Major (TCR)
—
Coliform (TCR)
May 1, 1991 – May 31, 1991
Archived
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
March 1, 1991 – March 31, 1991
Archived
Monitoring, Regular
—
Benzene
January 1, 1991 – March 31, 1991
Archived
Monitoring, Regular
—
Carbon tetrachloride
January 1, 1991 – March 31, 1991
Archived
Monitoring, Regular
—
Trichloroethylene
January 1, 1991 – March 31, 1991
Archived
Monitoring, Regular
—
p-Dichlorobenzene
January 1, 1991 – March 31, 1991
Archived
Monitoring, Regular
—
1,1-Dichloroethylene
January 1, 1991 – March 31, 1991
Archived
Monitoring, Regular
—
1,2-Dichloroethane
January 1, 1991 – March 31, 1991
Archived
Monitoring, Regular
—
Combined Radium (-226 and -228)
December 1, 1989 – August 1, 1991
Archived
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
December 1, 1989 – August 1, 1991
Archived

Archived closed in EPA's records (typically due to age or a data correction)

Period	Violation	Contaminant / rule	Health-based	Status
May 1, 1991 – May 31, 1991	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived
March 1, 1991 – March 31, 1991	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived
January 1, 1991 – March 31, 1991	Monitoring, Regular	Benzene	—	Archived
January 1, 1991 – March 31, 1991	Monitoring, Regular	Carbon tetrachloride	—	Archived
January 1, 1991 – March 31, 1991	Monitoring, Regular	Trichloroethylene	—	Archived
January 1, 1991 – March 31, 1991	Monitoring, Regular	p-Dichlorobenzene	—	Archived
January 1, 1991 – March 31, 1991	Monitoring, Regular	1,1-Dichloroethylene	—	Archived
January 1, 1991 – March 31, 1991	Monitoring, Regular	1,2-Dichloroethane	—	Archived
December 1, 1989 – August 1, 1991	Monitoring, Regular	Combined Radium (-226 and -228)	—	Archived
December 1, 1989 – August 1, 1991	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

May 9, 1991State Violation/Reminder Notice1 linked violation
May 9, 1991State Public Notification requested1 linked violation
April 24, 1991State Public Notification requested2 linked violations
April 15, 1991State Public Notification received1 linked violation
January 1, 1991State Violation/Reminder Notice7 linked violations
January 1, 1991State Public Notification requested7 linked violations
December 24, 1990State Public Notification received2 linked violations
December 18, 1990State Public Notification requested2 linked violations
November 10, 1990State Public Notification requested1 linked violation
November 10, 1990State Violation/Reminder Notice1 linked violation
October 1, 1990State Public Notification issued1 linked violation
August 17, 1990State Public Notification requested1 linked violation
August 15, 1990State Public Notification received1 linked violation
July 14, 1990State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
July 14, 1990State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
April 24, 1990State Public Notification received3 linked violations
April 12, 1990State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
April 12, 1990State Public Notification requested2 linked violations
January 29, 1990State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
December 15, 1989State Public Notification requested1 linked violation
August 28, 1989State Public Notification received2 linked violations
June 17, 1989State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
June 17, 1989State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
January 6, 1989State Public Notification requested2 linked violations

Last known contact on file (system is inactive)

Not on record

Phone not on record

WARREN TWP, IL 60058