HENDERSON, IL · Knox County

HENDERSON Water System

Current status

10 items on record are 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): IL0950250
System type: Community Water System
Population served: 375
Service connections: 150
Ownership: local government
Water source: groundwater (wells)

Violation history

Public Notification Violation for NPDWR Violation
—
Public Notice
October 12, 2025
Unaddressed
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
October 1, 2025
Unaddressed
Public Notification Violation for NPDWR Violation
—
Public Notice
August 22, 2025
Unaddressed
Notification, Known or Potential LSL
—
LEAD AND COPPER RULE REVISIONS
July 2, 2025
Unaddressed
Consumer Confidence Report Inadequate Reporting
—
Consumer Confidence Rule
July 1, 2025
Unaddressed
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2025
Unaddressed
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
January 1, 2025 – December 31, 2025
Archived
Monitoring and Reporting (DBP)
—
TTHM
January 1, 2025 – December 31, 2025
Archived
LSL Reporting
—
LEAD AND COPPER RULE REVISIONS
October 17, 2024 – October 19, 2025
Resolved
LSL Inventory
Health-based
LEAD AND COPPER RULE REVISIONS
October 17, 2024 – October 19, 2025
Resolved
Consumer Confidence Report Inadequate Reporting
—
Consumer Confidence Rule
July 1, 2024
Unaddressed
Monitoring and Reporting (DBP)
—
TTHM
January 1, 2024 – December 31, 2024
Archived
Consumer Confidence Report Inadequate Reporting
—
Consumer Confidence Rule
July 1, 2023
Unaddressed
Lead Consumer Notice
—
Lead and Copper Rule
December 30, 2022 – June 25, 2023
Resolved
Monitoring and Reporting (DBP)
—
TTHM
September 1, 2021 – August 31, 2022
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
September 1, 2021 – August 31, 2022
Resolved
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
October 1, 2020 – September 23, 2021
Resolved
Lead Consumer Notice
—
Lead and Copper Rule
April 1, 2019 – June 11, 2020
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
December 14, 2018
Unaddressed
Public Notification Violation for NPDWR Violation
—
Public Notice
December 14, 2018
Unaddressed
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
November 1, 2017 – November 30, 2017
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
October 1, 2017 – December 21, 2017
Resolved
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
October 1, 2012 – September 11, 2013
Resolved
Lead Consumer Notice
—
Lead and Copper Rule
January 2, 2010 – January 26, 2010
Resolved
Monitoring and Reporting (DBP)
—
TTHM
January 1, 2010 – December 31, 2012
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
January 1, 2010 – December 31, 2012
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
July 1, 2008 – September 16, 2008
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
August 1, 2005 – August 31, 2005
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
January 1, 1999 – January 31, 1999
Archived
Monitoring, Repeat Minor (TCR)
—
Coliform (TCR)
May 1, 1995 – May 31, 1995
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
May 1, 1995 – May 31, 1995
Archived
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
November 1, 1993 – November 30, 1993
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
October 1, 1993 – October 31, 1993
Archived
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
June 1, 1992 – June 30, 1992
Archived
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
June 30, 1977 – June 29, 1981
Archived

Unaddressed no corrective action on record yetArchived closed in EPA's records (typically due to age or a data correction)Resolved addressed and confirmed by the state

Period	Violation	Contaminant / rule	Health-based	Status
October 12, 2025	Public Notification Violation for NPDWR Violation	Public Notice	—	Unaddressed
October 1, 2025	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Unaddressed
August 22, 2025	Public Notification Violation for NPDWR Violation	Public Notice	—	Unaddressed
July 2, 2025	Notification, Known or Potential LSL	LEAD AND COPPER RULE REVISIONS	—	Unaddressed
July 1, 2025	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	—	Unaddressed
July 1, 2025	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Unaddressed
January 1, 2025 – December 31, 2025	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Archived
January 1, 2025 – December 31, 2025	Monitoring and Reporting (DBP)	TTHM	—	Archived
October 17, 2024 – October 19, 2025	LSL Reporting	LEAD AND COPPER RULE REVISIONS	—	Resolved
October 17, 2024 – October 19, 2025	LSL Inventory	LEAD AND COPPER RULE REVISIONS	Health-based	Resolved
July 1, 2024	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	—	Unaddressed
January 1, 2024 – December 31, 2024	Monitoring and Reporting (DBP)	TTHM	—	Archived
July 1, 2023	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	—	Unaddressed
December 30, 2022 – June 25, 2023	Lead Consumer Notice	Lead and Copper Rule	—	Resolved
September 1, 2021 – August 31, 2022	Monitoring and Reporting (DBP)	TTHM	—	Resolved
September 1, 2021 – August 31, 2022	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
October 1, 2020 – September 23, 2021	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
April 1, 2019 – June 11, 2020	Lead Consumer Notice	Lead and Copper Rule	—	Resolved
December 14, 2018	Public Notification Violation for NPDWR Violation	Public Notice	—	Unaddressed
December 14, 2018	Public Notification Violation for NPDWR Violation	Public Notice	—	Unaddressed
November 1, 2017 – November 30, 2017	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
October 1, 2017 – December 21, 2017	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
October 1, 2012 – September 11, 2013	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
January 2, 2010 – January 26, 2010	Lead Consumer Notice	Lead and Copper Rule	—	Resolved
January 1, 2010 – December 31, 2012	Monitoring and Reporting (DBP)	TTHM	—	Resolved
January 1, 2010 – December 31, 2012	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
July 1, 2008 – September 16, 2008	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
August 1, 2005 – August 31, 2005	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
January 1, 1999 – January 31, 1999	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Archived
May 1, 1995 – May 31, 1995	Monitoring, Repeat Minor (TCR)	Coliform (TCR)	—	Archived
May 1, 1995 – May 31, 1995	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
November 1, 1993 – November 30, 1993	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Archived
October 1, 1993 – October 31, 1993	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
June 1, 1992 – June 30, 1992	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived
June 30, 1977 – June 29, 1981	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Archived

Unaddressed no corrective action on record yetArchived closed in EPA's records (typically due to age or a data correction)Resolved addressed and confirmed by the state

Enforcement actions

November 24, 2025State Violation/Reminder Notice1 linked violation
October 21, 2025State Public Notification requested1 linked violation
October 21, 2025State Violation/Reminder Notice1 linked violation
October 19, 2025State Compliance achieved2 linked violations
October 19, 2025State Compliance achieved1 linked violation
October 14, 2025State Violation/Reminder Notice2 linked violations
October 14, 2025State Public Notification requested2 linked violations
September 24, 2025State Violation/Reminder Notice1 linked violation
September 10, 2025State Compliance achieved1 linked violation
August 26, 2025State Violation/Reminder Notice1 linked violation
August 26, 2025State Violation/Reminder Notice1 linked violation
July 22, 2025State Violation/Reminder Notice1 linked violation
July 22, 2025State Public Notification requested1 linked violation
July 3, 2025State Violation/Reminder Notice1 linked violation
July 3, 2025State Public Notification requested1 linked violation
July 2, 2025State Violation/Reminder Notice1 linked violation
July 2, 2025State Public Notification requested1 linked violation
November 1, 2024State Violation/Reminder Notice1 linked violation
October 11, 2024State Public Notification requested1 linked violation
October 11, 2024State Violation/Reminder Notice1 linked violation
December 6, 2023State Violation/Reminder Notice1 linked violation
August 30, 2023State Compliance achieved2 linked violations
June 25, 2023State Compliance achieved1 linked violation
January 24, 2023State Violation/Reminder Notice1 linked violation
October 17, 2022State Violation/Reminder Notice2 linked violations
October 17, 2022State Public Notification requested2 linked violations
September 23, 2021State Compliance achieved1 linked violation
October 20, 2020State Public Notification requested1 linked violation
October 20, 2020State Violation/Reminder Notice1 linked violation
June 11, 2020State Compliance achieved1 linked violation
April 3, 2019State Violation/Reminder Notice1 linked violation
January 16, 2019State Violation/Reminder Notice1 linked violation
January 16, 2019State Violation/Reminder Notice1 linked violation
December 21, 2017State Compliance achieved2 linked violations
December 13, 2017State Violation/Reminder Notice1 linked violation
December 13, 2017State Violation/Reminder Notice1 linked violation
December 13, 2017State Public Notification requested1 linked violation
December 13, 2017State Public Notification requested1 linked violation
November 13, 2013State Public Notification received2 linked violations
October 21, 2013State Public Notification received1 linked violation
September 11, 2013State Compliance achieved1 linked violation
September 4, 2013State Compliance achieved2 linked violations
October 12, 2012State Violation/Reminder Notice2 linked violations
October 12, 2012State Public Notification requested2 linked violations
October 11, 2012State Violation/Reminder Notice1 linked violation
October 11, 2012State Public Notification requested1 linked violation
January 26, 2010State Compliance achieved2 linked violations
September 18, 2008State Violation/Reminder Notice1 linked violation
September 16, 2008State Compliance achieved1 linked violation
March 1, 2006State Compliance achieved1 linked violation
October 18, 2005State Public Notification received1 linked violation
October 4, 2005State Public Notification requested1 linked violation
October 4, 2005State Violation/Reminder Notice1 linked violation
March 15, 1999State Public Notification requested1 linked violation
March 15, 1999State Violation/Reminder Notice1 linked violation
July 29, 1995State Public Notification requested2 linked violations
July 29, 1995State Violation/Reminder Notice2 linked violations
January 8, 1994State Public Notification requested1 linked violation
January 8, 1994State Public Notification requested1 linked violation
January 8, 1994State Violation/Reminder Notice1 linked violation
January 8, 1994State Violation/Reminder Notice1 linked violation
January 4, 1994State Public Notification received1 linked violation
January 4, 1994State Public Notification received1 linked violation
December 11, 1993State Public Notification requested1 linked violation
December 11, 1993State Public Notification requested2 linked violations
December 11, 1993State Violation/Reminder Notice2 linked violations
December 11, 1993State Violation/Reminder Notice1 linked violation
December 11, 1993State Violation/Reminder Notice1 linked violation
December 11, 1993State Public Notification requested1 linked violation
December 3, 1993State Public Notification received1 linked violation
December 3, 1993State Public Notification received1 linked violation
December 3, 1993State Public Notification received2 linked violations

Contact

HEMMRICH, SHARON G.

414-899-0375

HENDERSON, IL 61439