TONICA, IL · LaSalle County

TONICA 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): IL0991150
System type: Community Water System
Population served: 705
Service connections: 340
Ownership: local government
Water source: groundwater (wells)

Violation history

Monitoring, Routine Major (TCR)
—
Coliform (TCR)
May 1, 2012 – May 31, 2012
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
April 1, 2012 – June 20, 2012
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrite
January 1, 2011 – June 27, 2012
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
July 1, 2009 – September 30, 2009
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
April 1, 2009 – June 30, 2009
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
January 1, 2009 – March 31, 2009
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
October 1, 2008 – December 31, 2008
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
July 1, 2008 – September 30, 2008
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
April 1, 2008 – June 30, 2008
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
October 1, 2007 – December 31, 2007
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
July 1, 2007 – September 30, 2007
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
April 1, 2007 – June 30, 2007
Resolved
Monitoring, Regular
—
Arsenic
October 1, 2006 – December 31, 2006
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
August 4, 2005 – September 28, 2005
Resolved
Monitoring, Regular
—
Nitrate
January 1, 2005 – March 31, 2005
Resolved
Monitoring, Repeat Major (TCR)
—
Coliform (TCR)
October 1, 1997 – October 31, 1997
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
October 1, 1997 – October 31, 1997
Archived
Monitoring, Repeat Major (TCR)
—
Coliform (TCR)
September 1, 1997 – September 30, 1997
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
September 1, 1997 – September 30, 1997
Archived
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
June 30, 1977 – June 29, 1981
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, 2012 – May 31, 2012	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
April 1, 2012 – June 20, 2012	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
January 1, 2011 – June 27, 2012	Maximum Contaminant Level Violation, Single Sample	Nitrite	Health-based	Resolved
July 1, 2009 – September 30, 2009	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
April 1, 2009 – June 30, 2009	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
January 1, 2009 – March 31, 2009	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
October 1, 2008 – December 31, 2008	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
July 1, 2008 – September 30, 2008	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
April 1, 2008 – June 30, 2008	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
October 1, 2007 – December 31, 2007	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
July 1, 2007 – September 30, 2007	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
April 1, 2007 – June 30, 2007	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
October 1, 2006 – December 31, 2006	Monitoring, Regular	Arsenic	—	Resolved
August 4, 2005 – September 28, 2005	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
January 1, 2005 – March 31, 2005	Monitoring, Regular	Nitrate	—	Resolved
October 1, 1997 – October 31, 1997	Monitoring, Repeat Major (TCR)	Coliform (TCR)	—	Archived
October 1, 1997 – October 31, 1997	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
September 1, 1997 – September 30, 1997	Monitoring, Repeat Major (TCR)	Coliform (TCR)	—	Archived
September 1, 1997 – September 30, 1997	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
June 30, 1977 – June 29, 1981	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Archived

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

Enforcement actions

May 31, 2014State Compliance achieved1 linked violation
August 26, 2013State Violation/Reminder Notice1 linked violation
June 10, 2013State Public Notification received1 linked violation
June 29, 2012State Formal Notice of Violation issued1 linked violation
June 27, 2012State Compliance achieved1 linked violation
June 20, 2012State Compliance achieved2 linked violations
June 19, 2012State Violation/Reminder Notice1 linked violation
June 19, 2012State Violation/Reminder Notice1 linked violation
June 19, 2012State Public Notification requested1 linked violation
June 19, 2012State Public Notification received1 linked violation
June 14, 2012State Public Notification requested1 linked violation
June 14, 2012State Violation/Reminder Notice1 linked violation
October 22, 2009State Violation/Reminder Notice1 linked violation
October 6, 2009State Compliance achieved14 linked violations
July 15, 2009State Violation/Reminder Notice1 linked violation
April 21, 2009State Violation/Reminder Notice1 linked violation
February 18, 2009State Public Notification received1 linked violation
January 15, 2009State Violation/Reminder Notice1 linked violation
January 15, 2009State Public Notification requested1 linked violation
December 3, 2008State Public Notification received1 linked violation
October 27, 2008State Violation/Reminder Notice1 linked violation
October 27, 2008State Public Notification requested1 linked violation
August 22, 2008State Public Notification received1 linked violation
July 16, 2008State Violation/Reminder Notice1 linked violation
July 16, 2008State Public Notification requested1 linked violation
May 15, 2008State Public Notification received1 linked violation
April 16, 2008State Violation/Reminder Notice1 linked violation
April 16, 2008State Public Notification requested1 linked violation
February 19, 2008State Public Notification received1 linked violation
January 16, 2008State Violation/Reminder Notice1 linked violation
January 16, 2008State Public Notification requested1 linked violation
November 7, 2007State Public Notification received1 linked violation
October 15, 2007State Public Notification requested1 linked violation
October 15, 2007State Violation/Reminder Notice1 linked violation
August 16, 2007State Public Notification received1 linked violation
July 17, 2007State Public Notification requested1 linked violation
July 17, 2007State Violation/Reminder Notice1 linked violation
May 9, 2007State Public Notification received1 linked violation
April 13, 2007State Violation/Reminder Notice1 linked violation
April 13, 2007State Public Notification requested1 linked violation
February 20, 2007State Public Notification received2 linked violations
January 16, 2007State Public Notification requested1 linked violation
January 16, 2007State Public Notification requested1 linked violation
January 16, 2007State Violation/Reminder Notice1 linked violation
January 16, 2007State Violation/Reminder Notice1 linked violation
January 10, 2007State Bilateral Compliance Agreement signed13 linked violations
January 9, 2007State Compliance achieved1 linked violation
December 12, 2006State Violation/Reminder Notice1 linked violation
November 29, 2006State Compliance achieved1 linked violation
November 29, 2006State Public Notification received1 linked violation
October 27, 2006State Formal Notice of Violation issued13 linked violations
October 18, 2006State Public Notification requested1 linked violation
October 18, 2006State Violation/Reminder Notice1 linked violation
September 28, 2005State Public Notification received1 linked violation
September 28, 2005State Compliance achieved2 linked violations
September 14, 2005State Violation/Reminder Notice1 linked violation
September 14, 2005State Violation/Reminder Notice1 linked violation
July 21, 2005State Public Notification received1 linked violation
May 10, 2005State Compliance achieved2 linked violations
May 4, 2005State Public Notification requested1 linked violation
May 4, 2005State Violation/Reminder Notice1 linked violation
August 3, 2004State Public Notification requested1 linked violation
July 6, 2004State Compliance achieved1 linked violation
January 3, 1998State Public Notification requested2 linked violations
January 3, 1998State Violation/Reminder Notice2 linked violations
December 5, 1997State Public Notification received4 linked violations
November 29, 1997State Public Notification requested2 linked violations
November 29, 1997State Violation/Reminder Notice2 linked violations
January 12, 1996State Public Notification received1 linked violation
December 30, 1995State Violation/Reminder Notice2 linked violations

Contact

SKINNER, ERIC

815-343-6739

TONICA, IL 61370