CAHOKIA, IL · St. Clair County

COMMONFIELDS OF CAHOKIA PWD Water System

Inactive system

This water system is marked inactive in EPA’s federal records as of August 6, 2021. 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 St. Clair County, IL.

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): IL1635030
System type: Community Water System
Population served: 11,030
Service connections: 4,360
Ownership: local government
Water source: surface water (rivers, lakes, or reservoirs)

Violation history

Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
May 1, 2013 – May 31, 2013
Resolved
Monitoring and Reporting (DBP)
—
Chloramine
April 1, 2013 – June 19, 2013
Resolved
Monitoring and Reporting (DBP)
—
Chloramine
January 1, 2012 – February 22, 2012
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
November 1, 2011 – November 30, 2011
Resolved
Monitoring and Reporting (DBP)
—
Chloramine
October 1, 2011 – December 21, 2011
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
October 1, 2006 – October 31, 2006
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
April 1, 1999 – April 30, 1999
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
November 1, 1993 – November 30, 1993
Archived

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
May 1, 2013 – May 31, 2013	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
April 1, 2013 – June 19, 2013	Monitoring and Reporting (DBP)	Chloramine	—	Resolved
January 1, 2012 – February 22, 2012	Monitoring and Reporting (DBP)	Chloramine	—	Resolved
November 1, 2011 – November 30, 2011	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
October 1, 2011 – December 21, 2011	Monitoring and Reporting (DBP)	Chloramine	—	Resolved
October 1, 2006 – October 31, 2006	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
April 1, 1999 – April 30, 1999	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Archived
November 1, 1993 – November 30, 1993	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived

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

Enforcement actions

June 10, 2014State Public Notification received1 linked violation
June 10, 2014State Public Notification received1 linked violation
June 19, 2013State Compliance achieved2 linked violations
June 13, 2013State Violation/Reminder Notice1 linked violation
June 13, 2013State Public Notification requested1 linked violation
June 13, 2013State Public Notification requested1 linked violation
June 13, 2013State Violation/Reminder Notice1 linked violation
June 20, 2012State Public Notification received2 linked violations
February 22, 2012State Compliance achieved1 linked violation
February 16, 2012State Violation/Reminder Notice1 linked violation
December 21, 2011State Compliance achieved2 linked violations
December 19, 2011State Public Notification requested1 linked violation
December 19, 2011State Violation/Reminder Notice1 linked violation
December 19, 2011State Public Notification requested1 linked violation
December 19, 2011State Violation/Reminder Notice1 linked violation
May 1, 2007State Compliance achieved1 linked violation
January 10, 1998State Public Notification requested2 linked violations
January 10, 1998State Violation/Reminder Notice2 linked violations
December 7, 1997State Public Notification received2 linked violations
January 23, 1994State Public Notification received1 linked violation
January 15, 1994State Violation/Reminder Notice1 linked violation
January 15, 1994State Public Notification requested1 linked violation
January 15, 1994State Public Notification requested4 linked violations

Last known contact on file (system is inactive)

TRAITEUR, DENNIS

618-337-3302

CAHOKIA, IL 62206