MENDOTA, IL · LaSalle County

MENDOTA Water System

Current status

1 item on record is open and awaiting resolution as of July 4, 2026. None are health-based violations — open items of this kind are most often monitoring or reporting requirements, not water-safety findings. Full details are in the violation history below.

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): IL0990550
System type: Community Water System
Population served: 6,926
Service connections: 2,833
Ownership: local government
Water source: groundwater (wells)

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
Unaddressed
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
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, 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 stateUnaddressed no corrective action on record yetArchived 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	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Unaddressed
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
August 19, 2005 – September 20, 2005	Public Notification Violation for NPDWR Violation	Public Notice	—	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 stateUnaddressed no corrective action on record yetArchived closed in EPA's records (typically due to age or a data correction)

Enforcement actions

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
June 29, 2021State Compliance achieved4 linked violations
April 6, 2021State Violation/Reminder Notice2 linked violations
March 19, 2021State Bilateral Compliance Agreement signed4 linked violations
January 7, 2021State Public Notification requested2 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
July 19, 2007State Public Notification requested2 linked violations
May 4, 2007State Public Notification received1 linked violation
February 14, 2007State Public Notification received7 linked violations
October 25, 2006State Bilateral Compliance Agreement signed8 linked violations
April 8, 2005State Violation/Reminder Notice1 linked violation
September 30, 2004State Public Notification received2 linked violations
August 24, 2004State Public Notification requested1 linked violation
April 20, 2004State Public Notification received7 linked violations
January 12, 2004State Public Notification received1 linked violation
January 10, 2004State Violation/Reminder Notice2 linked violations
December 19, 2003State Formal Notice of Violation issued14 linked violations
October 10, 2003State Violation/Reminder Notice1 linked violation
January 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 11, 1989State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
April 13, 1989State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
November 13, 1985State Compliance achieved1 linked violation

Contact

KIMREY, TIMOTHY D.

815-539-6307

MENDOTA, IL 61342