Is MENDOTA required to publish a Consumer Confidence Report?

Yes. MENDOTA 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 MENDOTA’s next Consumer Confidence Report due?

MENDOTA’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.

MENDOTA, IL · LaSalle County

MENDOTA Water System

Consumer Confidence Report status

MENDOTA 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 MENDOTA.

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): IL0990550
System type: Community Water System
Population served: 7,100
Service connections: 2,818
Ownership: local government
Water source: groundwater (wells)

MENDOTA is one of 248 community water systems in Illinois in the 3,301 to 10,000 people size category, serving 7,100 people from groundwater.

As of August 1, 2026, its federal record holds 20 entries between 1977 and 2025, all of which EPA lists as closed.

Of the 20, 3 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 the Radionuclides and Revised Rad Rule, the Stage 2 Disinfectants and Disinfection Byproducts Rule, and the Lead and Copper Rule.

Violation history

Notification, Known or Potential LSL
—
LEAD AND COPPER RULE REVISIONS
July 2, 2025 – July 2, 2025
Resolved
Consumer Confidence Report Inadequate Reporting
—
Consumer Confidence Rule
July 1, 2025 – October 15, 2025
Resolved
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
July 1, 2025 – December 30, 2025
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
January 1, 2021 – March 31, 2021
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
October 1, 2020 – December 31, 2020
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
July 1, 2020 – September 30, 2020
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
January 1, 2008 – March 31, 2008
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
October 1, 2007 – December 31, 2007
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
July 1, 2007 – September 30, 2007
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
April 1, 2007 – June 30, 2007
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
January 1, 2007 – March 31, 2007
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
October 1, 2006 – December 31, 2006
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
April 1, 2006 – June 30, 2006
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
August 19, 2005 – September 20, 2005
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
April 1, 2005 – April 18, 2005
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
October 1, 2004 – December 31, 2004
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
April 1, 2003 – June 30, 2003
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
October 1, 2002 – December 31, 2002
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
November 3, 2000 – September 30, 2002
Resolved
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
July 2, 2025 – July 2, 2025	Notification, Known or Potential LSL	LEAD AND COPPER RULE REVISIONS	—	Resolved
July 1, 2025 – October 15, 2025	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	—	Resolved
July 1, 2025 – December 30, 2025	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
January 1, 2021 – March 31, 2021	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
October 1, 2020 – December 31, 2020	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
July 1, 2020 – September 30, 2020	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
January 1, 2008 – March 31, 2008	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
October 1, 2007 – December 31, 2007	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
July 1, 2007 – September 30, 2007	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
April 1, 2007 – June 30, 2007	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
January 1, 2007 – March 31, 2007	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
October 1, 2006 – December 31, 2006	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
April 1, 2006 – June 30, 2006	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
August 19, 2005 – September 20, 2005	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
April 1, 2005 – April 18, 2005	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
October 1, 2004 – December 31, 2004	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
April 1, 2003 – June 30, 2003	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
October 1, 2002 – December 31, 2002	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
November 3, 2000 – September 30, 2002	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
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

December 30, 2025State Compliance achieved1 linked violation
October 15, 2025State Compliance achieved1 linked violation
August 25, 2025State Violation/Reminder Notice1 linked violation
July 29, 2025State Public Notification requested1 linked violation
July 29, 2025State Violation/Reminder Notice1 linked violation
July 3, 2025State Violation/Reminder Notice1 linked violation
July 3, 2025State Public Notification requested1 linked violation
July 2, 2025State Compliance achieved1 linked violation
July 12, 2021State Public Notification received1 linked violation
April 9, 2021State Public Notification received2 linked violations
April 6, 2021State Public Notification requested2 linked violations
March 19, 2021State Bilateral Compliance Agreement signed4 linked violations
January 7, 2021State Violation/Reminder Notice2 linked violations
December 4, 2020State Formal Notice of Violation issued4 linked violations
November 9, 2020State Public Notification received1 linked violation
October 13, 2020State Violation/Reminder Notice1 linked violation
October 13, 2020State Public Notification requested1 linked violation
May 29, 2008State Compliance achieved9 linked violations
April 21, 2008State Public Notification requested22 linked violations
February 7, 2008State Public Notification received25 linked violations
August 2, 2007State Public Notification received3 linked violations
May 4, 2007State Public Notification received1 linked violation
April 24, 2007State Public Notification requested3 linked violations
October 25, 2006State Bilateral Compliance Agreement signed8 linked violations
April 8, 2005State Violation/Reminder Notice1 linked violation
August 24, 2004State Public Notification requested1 linked violation
January 12, 2004State Public Notification received1 linked violation
January 10, 2004State Public Notification requested2 linked violations
December 19, 2003State Formal Notice of Violation issued14 linked violations
October 10, 2003State Public Notification requested4 linked violations
October 10, 2003State Violation/Reminder Notice1 linked violation
July 10, 2003State Public Notification requested6 linked violations
April 10, 2003State Public Notification requested2 linked violations
December 5, 2001State Bilateral Compliance Agreement signed4 linked violations
October 2, 1994State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
October 2, 1994State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
November 11, 1989State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
November 13, 1985State Compliance achieved1 linked violation

Common questions

Is MENDOTA required to publish a Consumer Confidence Report?: Yes. MENDOTA 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 MENDOTA’s next Consumer Confidence Report due?: MENDOTA’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does MENDOTA have any open drinking water violations on record?: As of August 1, 2026, EPA's federal records show no open violations for MENDOTA.
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

KIMREY, TIMOTHY D.

815-539-6307

MENDOTA, IL 61342