Is TONICA required to publish a Consumer Confidence Report?

Yes. TONICA is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.

When is TONICA’s next Consumer Confidence Report due?

TONICA’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.

What is a Consumer Confidence Report?

A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.

TONICA, IL · LaSalle County

TONICA Water System

Consumer Confidence Report status

TONICA must publish a Consumer Confidence Report — the annual drinking water quality report covering calendar year 2026 — by July 1, 2027.

As of August 1, 2026, EPA's federal records show no open violations for TONICA.

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

TONICA is one of 773 community water systems in Illinois in the 501 to 3,300 people size category, serving 705 people from groundwater.

As of August 1, 2026, its federal record holds 23 entries between 1977 and 2012, all of which EPA lists as closed. Nothing has been added since 2012.

Of the 23, 7 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 inorganic chemicals, the Total Coliform Rules, and the Stage 1 Disinfectants and Disinfection Byproducts Rule.

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
January 1, 2008 – March 31, 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
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
January 1, 2007 – March 31, 2007
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
October 1, 2006 – December 31, 2006
Resolved
Monitoring, Regular
—
Arsenic
October 1, 2006 – December 31, 2006
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
July 1, 2006 – September 30, 2006
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
October 1, 1997 – October 31, 1997
Archived
Monitoring, Repeat Major (TCR)
—
Coliform (TCR)
October 1, 1997 – October 31, 1997
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
September 1, 1997 – September 30, 1997
Archived
Monitoring, Repeat Major (TCR)
—
Coliform (TCR)
September 1, 1997 – September 30, 1997
Archived
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
October 1, 1995 – October 31, 1995
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
January 1, 2008 – March 31, 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
January 1, 2007 – March 31, 2007	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
October 1, 2006 – December 31, 2006	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
October 1, 2006 – December 31, 2006	Monitoring, Regular	Arsenic	—	Resolved
July 1, 2006 – September 30, 2006	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
October 1, 1997 – October 31, 1997	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
October 1, 1997 – October 31, 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
September 1, 1997 – September 30, 1997	Monitoring, Repeat Major (TCR)	Coliform (TCR)	—	Archived
October 1, 1995 – October 31, 1995	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	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

Common questions

Is TONICA required to publish a Consumer Confidence Report?: Yes. TONICA is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.
When is TONICA’s next Consumer Confidence Report due?: TONICA’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does TONICA have any open drinking water violations on record?: As of August 1, 2026, EPA's federal records show no open violations for TONICA.
What is a Consumer Confidence Report?: A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.

Contact

SKINNER, ERIC

815-343-6739

TONICA, IL 61370