OAK LAWN, IL · Cook County

OAK LAWN 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): IL0312220
System type: Community Water System
Population served: 58,362
Service connections: 16,766
Ownership: local government
Water source: surface water (rivers, lakes, or reservoirs)

Violation history

Consumer Confidence Report Inadequate Reporting
—
Consumer Confidence Rule
July 1, 2023 – May 17, 2024
Resolved
Lead Consumer Notice
—
Lead and Copper Rule
December 30, 2022 – January 3, 2023
Resolved
Consumer Confidence Report Inadequate Reporting
—
Consumer Confidence Rule
July 1, 2016 – June 23, 2017
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
September 1, 2015 – September 30, 2015
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
July 1, 2015 – September 30, 2015
Resolved
Monitoring, Repeat Minor (TCR)
—
Coliform (TCR)
August 1, 1997 – August 31, 1997
Archived
Public Education
Health-based
Lead and Copper Rule
January 1, 1993 – February 5, 1995
Resolved

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

Period	Violation	Contaminant / rule	Health-based	Status
July 1, 2023 – May 17, 2024	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	—	Resolved
December 30, 2022 – January 3, 2023	Lead Consumer Notice	Lead and Copper Rule	—	Resolved
July 1, 2016 – June 23, 2017	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	—	Resolved
September 1, 2015 – September 30, 2015	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
July 1, 2015 – September 30, 2015	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
August 1, 1997 – August 31, 1997	Monitoring, Repeat Minor (TCR)	Coliform (TCR)	—	Archived
January 1, 1993 – February 5, 1995	Public Education	Lead and Copper Rule	Health-based	Resolved

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

Enforcement actions

September 6, 2025State Violation/Reminder Notice1 linked violation
May 17, 2024State Compliance achieved1 linked violation
December 19, 2023State Violation/Reminder Notice1 linked violation
January 24, 2023State Violation/Reminder Notice1 linked violation
January 3, 2023State Compliance achieved1 linked violation
June 23, 2017State Compliance achieved1 linked violation
July 21, 2016State Violation/Reminder Notice1 linked violation
June 20, 2016State Public Notification received1 linked violation
June 20, 2016State Public Notification received1 linked violation
November 2, 2015State Compliance achieved2 linked violations
October 20, 2015State Public Notification requested1 linked violation
October 20, 2015State Public Notification requested3 linked violations
October 20, 2015State Violation/Reminder Notice1 linked violation
October 20, 2015State Violation/Reminder Notice1 linked violation
December 5, 2000State Violation/Reminder Notice17 linked violations
October 25, 1997State Public Notification requested1 linked violation
October 25, 1997State Violation/Reminder Notice1 linked violation
February 5, 1995State Compliance achieved1 linked violation
March 24, 1994State Violation/Reminder Notice1 linked violation
March 24, 1994State Public Notification requested2 linked violations
March 24, 1994State Violation/Reminder Notice3 linked violations
March 24, 1994State Public Notification requested1 linked violation
January 18, 1994State Compliance achieved1 linked violation
May 8, 1990State Public Notification issuedgeneral compliance action — not tied to a specific violation on record
March 11, 1990State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
March 11, 1990State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
October 9, 1988State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record

Contact

MEYER, WILLIAM

708-499-7749

OAK LAWN, IL 60453