OTTAWA, IL · LaSalle County

OTTAWA 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): IL0990800
System type: Community Water System
Population served: 18,097
Service connections: 8,049
Ownership: local government
Water source: groundwater (wells)

Violation history

Monitoring and Reporting (DBP)
—
TTHM
October 1, 2025 – December 31, 2025
Archived
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
January 1, 2023 – December 31, 2023
Resolved
Monitoring, Regular
—
Combined Radium (-226 and -228)
October 1, 2022 – December 31, 2022
Resolved
Monitoring, Regular
—
Combined Radium (-226 and -228)
July 1, 2022 – September 30, 2022
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
January 1, 2022 – December 31, 2022
Resolved
Monitoring, Regular
—
Carbon tetrachloride
January 1, 2020 – December 31, 2022
Resolved
Monitoring, Regular
—
Xylenes, Total
January 1, 2020 – December 31, 2022
Resolved
Monitoring, Regular
—
Toluene
January 1, 2020 – December 31, 2022
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
January 1, 2020 – December 31, 2022
Resolved
Monitoring, Regular
—
trans-1,2-Dichloroethylene
January 1, 2020 – December 31, 2022
Resolved
Monitoring, Regular
—
Ethylbenzene
January 1, 2020 – December 31, 2022
Resolved
Monitoring, Regular
—
Carbon tetrachloride
January 1, 2020 – December 31, 2022
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
January 1, 2020 – December 31, 2022
Resolved
Monitoring, Regular
—
cis-1,2-Dichloroethylene
January 1, 2020 – December 31, 2022
Resolved
Monitoring, Regular
—
1,1,2-Trichloroethane
January 1, 2020 – December 31, 2022
Resolved
Monitoring, Regular
—
Trichloroethylene
January 1, 2020 – December 31, 2022
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
January 1, 2020 – December 31, 2022
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
January 1, 2020 – December 31, 2022
Resolved
Monitoring, Regular
—
CHLOROBENZENE
January 1, 2020 – December 31, 2022
Resolved
Monitoring, Regular
—
Tetrachloroethylene
January 1, 2020 – December 31, 2022
Resolved
Monitoring, Regular
—
Vinyl chloride
January 1, 2020 – December 31, 2022
Resolved
Monitoring, Regular
—
Styrene
January 1, 2020 – December 31, 2022
Resolved
Monitoring, Regular
—
Benzene
January 1, 2020 – December 31, 2022
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
January 1, 2020 – December 31, 2022
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
January 1, 2020 – December 31, 2022
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
January 1, 2020 – December 31, 2022
Resolved
Monitoring, Regular
—
trans-1,2-Dichloroethylene
January 1, 2020 – December 31, 2022
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
January 1, 2020 – December 31, 2022
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
January 1, 2020 – December 31, 2022
Resolved
Monitoring, Regular
—
Tetrachloroethylene
January 1, 2020 – December 31, 2022
Resolved
Monitoring, Regular
—
CHLOROBENZENE
January 1, 2020 – December 31, 2022
Resolved
Monitoring, Regular
—
Vinyl chloride
January 1, 2020 – December 31, 2022
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
January 1, 2020 – December 31, 2022
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
November 1, 2018 – October 31, 2019
Resolved
Monitoring and Reporting (DBP)
—
TTHM
November 1, 2018 – October 31, 2019
Resolved
Monitoring, Regular
—
Combined Radium (-226 and -228)
January 1, 2014 – March 31, 2014
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
October 1, 2011 – October 31, 2011
Resolved
Monitoring, Regular
—
Combined Radium (-226 and -228)
July 1, 2011 – September 30, 2011
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
June 1, 2009 – June 30, 2009
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)
January 1, 2003 – March 31, 2003
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
October 1, 2001 – September 30, 2002
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
September 1, 2001 – September 30, 2001
Archived
Monitoring, Regular
—
Combined Radium (-226 and -228)
April 1, 1999 – June 30, 1999
Resolved
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
April 1, 1999 – June 30, 1999
Resolved
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
July 1, 1998 – April 19, 1999
Resolved
Water Quality Parameter M/R
—
Lead and Copper Rule
January 1, 1998 – June 30, 1998
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
October 1, 1997 – September 30, 2001
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
October 1, 1993 – September 30, 1997
Resolved
Maximum Contaminant Level Violation, Acute (TCR)
Health-based
Coliform (TCR)
June 1, 1993 – June 30, 1993
Archived
Monitoring, Repeat Minor (TCR)
—
Coliform (TCR)
June 1, 1993 – June 30, 1993
Archived
OCCT/SOWT Study/Recommendation
Health-based
Lead and Copper Rule
December 7, 1992 – January 28, 1994
Resolved
Water Quality Parameter M/R
—
Lead and Copper Rule
October 1, 1992 – March 31, 1993
Resolved
Water Quality Parameter M/R
—
Lead and Copper Rule
April 1, 1992 – September 30, 1992
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
November 1, 1989 – September 30, 1993
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
October 1, 1989 – September 30, 1993
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
October 4, 1985 – October 3, 1989
Resolved
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
June 30, 1977 – June 29, 1981
Archived

Archived 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 1, 2025 – December 31, 2025	Monitoring and Reporting (DBP)	TTHM	—	Archived
January 1, 2023 – December 31, 2023	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
October 1, 2022 – December 31, 2022	Monitoring, Regular	Combined Radium (-226 and -228)	—	Resolved
July 1, 2022 – September 30, 2022	Monitoring, Regular	Combined Radium (-226 and -228)	—	Resolved
January 1, 2022 – December 31, 2022	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
January 1, 2020 – December 31, 2022	Monitoring, Regular	Carbon tetrachloride	—	Resolved
January 1, 2020 – December 31, 2022	Monitoring, Regular	Xylenes, Total	—	Resolved
January 1, 2020 – December 31, 2022	Monitoring, Regular	Toluene	—	Resolved
January 1, 2020 – December 31, 2022	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
January 1, 2020 – December 31, 2022	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
January 1, 2020 – December 31, 2022	Monitoring, Regular	Ethylbenzene	—	Resolved
January 1, 2020 – December 31, 2022	Monitoring, Regular	Carbon tetrachloride	—	Resolved
January 1, 2020 – December 31, 2022	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
January 1, 2020 – December 31, 2022	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Resolved
January 1, 2020 – December 31, 2022	Monitoring, Regular	1,1,2-Trichloroethane	—	Resolved
January 1, 2020 – December 31, 2022	Monitoring, Regular	Trichloroethylene	—	Resolved
January 1, 2020 – December 31, 2022	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
January 1, 2020 – December 31, 2022	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
January 1, 2020 – December 31, 2022	Monitoring, Regular	CHLOROBENZENE	—	Resolved
January 1, 2020 – December 31, 2022	Monitoring, Regular	Tetrachloroethylene	—	Resolved
January 1, 2020 – December 31, 2022	Monitoring, Regular	Vinyl chloride	—	Resolved
January 1, 2020 – December 31, 2022	Monitoring, Regular	Styrene	—	Resolved
January 1, 2020 – December 31, 2022	Monitoring, Regular	Benzene	—	Resolved
January 1, 2020 – December 31, 2022	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
January 1, 2020 – December 31, 2022	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
January 1, 2020 – December 31, 2022	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
January 1, 2020 – December 31, 2022	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
January 1, 2020 – December 31, 2022	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
January 1, 2020 – December 31, 2022	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
January 1, 2020 – December 31, 2022	Monitoring, Regular	Tetrachloroethylene	—	Resolved
January 1, 2020 – December 31, 2022	Monitoring, Regular	CHLOROBENZENE	—	Resolved
January 1, 2020 – December 31, 2022	Monitoring, Regular	Vinyl chloride	—	Resolved
January 1, 2020 – December 31, 2022	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
November 1, 2018 – October 31, 2019	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
November 1, 2018 – October 31, 2019	Monitoring and Reporting (DBP)	TTHM	—	Resolved
January 1, 2014 – March 31, 2014	Monitoring, Regular	Combined Radium (-226 and -228)	—	Resolved
October 1, 2011 – October 31, 2011	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
July 1, 2011 – September 30, 2011	Monitoring, Regular	Combined Radium (-226 and -228)	—	Resolved
June 1, 2009 – June 30, 2009	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
April 1, 2003 – June 30, 2003	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
January 1, 2003 – March 31, 2003	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
October 1, 2001 – September 30, 2002	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
September 1, 2001 – September 30, 2001	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
April 1, 1999 – June 30, 1999	Monitoring, Regular	Combined Radium (-226 and -228)	—	Resolved
April 1, 1999 – June 30, 1999	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Resolved
July 1, 1998 – April 19, 1999	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
January 1, 1998 – June 30, 1998	Water Quality Parameter M/R	Lead and Copper Rule	—	Resolved
October 1, 1997 – September 30, 2001	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
October 1, 1993 – September 30, 1997	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
June 1, 1993 – June 30, 1993	Maximum Contaminant Level Violation, Acute (TCR)	Coliform (TCR)	Health-based	Archived
June 1, 1993 – June 30, 1993	Monitoring, Repeat Minor (TCR)	Coliform (TCR)	—	Archived
December 7, 1992 – January 28, 1994	OCCT/SOWT Study/Recommendation	Lead and Copper Rule	Health-based	Resolved
October 1, 1992 – March 31, 1993	Water Quality Parameter M/R	Lead and Copper Rule	—	Resolved
April 1, 1992 – September 30, 1992	Water Quality Parameter M/R	Lead and Copper Rule	—	Resolved
November 1, 1989 – September 30, 1993	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
October 1, 1989 – September 30, 1993	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
October 4, 1985 – October 3, 1989	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

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

Enforcement actions

July 3, 2025State Public Notification requested1 linked violation
July 3, 2025State Violation/Reminder Notice1 linked violation
October 22, 2024State Compliance achieved4 linked violations
May 20, 2024State Administrative/Compliance Order without penalty issued3 linked violations
May 10, 2024State Public Notification received2 linked violations
March 18, 2024State Formal Notice of Violation issued3 linked violations
January 12, 2024State Public Notification requested2 linked violations
January 12, 2024State Violation/Reminder Notice2 linked violations
November 28, 2023State Compliance achieved1 linked violation
November 8, 2023State Public Notification received1 linked violation
November 2, 2023State Compliance achieved21 linked violations
October 2, 2023State Violation/Reminder Notice1 linked violation
October 2, 2023State Public Notification requested1 linked violation
June 28, 2023State Compliance achieved21 linked violations
May 19, 2023State Public Notification received1 linked violation
May 9, 2023State Public Notification received1 linked violation
May 9, 2023State Public Notification received1 linked violation
May 9, 2023State Public Notification received1 linked violation
May 9, 2023State Public Notification received1 linked violation
May 9, 2023State Public Notification received1 linked violation
May 9, 2023State Public Notification received2 linked violations
May 9, 2023State Public Notification received2 linked violations
May 9, 2023State Public Notification received2 linked violations
May 9, 2023State Public Notification received4 linked violations
May 9, 2023State Public Notification received2 linked violations
May 9, 2023State Public Notification received21 linked violations
May 9, 2023State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
May 9, 2023State Public Notification received2 linked violations
May 9, 2023State Public Notification received1 linked violation
May 9, 2023State Public Notification received1 linked violation
May 9, 2023State Public Notification received2 linked violations
February 10, 2023State Public Notification requested1 linked violation
February 10, 2023State Compliance achieved1 linked violation
February 10, 2023State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
February 10, 2023State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
February 10, 2023State Violation/Reminder Notice1 linked violation
February 3, 2023State Violation/Reminder Notice1 linked violation
February 3, 2023State Violation/Reminder Notice1 linked violation
February 3, 2023State Public Notification requested1 linked violation
February 3, 2023State Violation/Reminder Notice1 linked violation
February 3, 2023State Public Notification requested1 linked violation
February 3, 2023State Violation/Reminder Notice1 linked violation
February 3, 2023State Public Notification requested1 linked violation
February 3, 2023State Violation/Reminder Notice1 linked violation
February 3, 2023State Public Notification requested1 linked violation
February 3, 2023State Violation/Reminder Notice1 linked violation
February 3, 2023State Public Notification requested1 linked violation
February 3, 2023State Violation/Reminder Notice1 linked violation
February 3, 2023State Public Notification requested1 linked violation
February 3, 2023State Violation/Reminder Notice1 linked violation
February 3, 2023State Public Notification requested1 linked violation
February 3, 2023State Violation/Reminder Notice1 linked violation
February 3, 2023State Public Notification requested1 linked violation
February 3, 2023State Violation/Reminder Notice1 linked violation
February 3, 2023State Public Notification requested1 linked violation
February 3, 2023State Violation/Reminder Notice1 linked violation
February 3, 2023State Public Notification requested1 linked violation
February 3, 2023State Public Notification requested1 linked violation
February 3, 2023State Violation/Reminder Notice1 linked violation
February 3, 2023State Public Notification requested1 linked violation
February 3, 2023State Violation/Reminder Notice1 linked violation
February 3, 2023State Public Notification requested1 linked violation
February 3, 2023State Violation/Reminder Notice1 linked violation
February 3, 2023State Public Notification requested1 linked violation
February 3, 2023State Violation/Reminder Notice1 linked violation
February 3, 2023State Public Notification requested1 linked violation
February 3, 2023State Violation/Reminder Notice1 linked violation
February 3, 2023State Public Notification requested1 linked violation
February 3, 2023State Violation/Reminder Notice1 linked violation
February 3, 2023State Public Notification requested1 linked violation
February 3, 2023State Violation/Reminder Notice1 linked violation
February 3, 2023State Public Notification requested1 linked violation
February 3, 2023State Violation/Reminder Notice1 linked violation
February 3, 2023State Public Notification requested1 linked violation
February 3, 2023State Violation/Reminder Notice1 linked violation
February 3, 2023State Public Notification requested1 linked violation
February 3, 2023State Violation/Reminder Notice1 linked violation
February 3, 2023State Public Notification requested1 linked violation
February 3, 2023State Violation/Reminder Notice1 linked violation
February 3, 2023State Public Notification requested1 linked violation
February 3, 2023State Violation/Reminder Notice20 linked violations
February 3, 2023State Public Notification requested20 linked violations
February 3, 2023State Violation/Reminder Notice2 linked violations
February 3, 2023State Public Notification requested2 linked violations
October 27, 2022State Compliance achieved1 linked violation
October 18, 2022State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
October 18, 2022State Violation/Reminder Notice1 linked violation
November 17, 2020State Compliance achieved2 linked violations
June 22, 2020State Public Notification received2 linked violations
January 13, 2020State Violation/Reminder Notice2 linked violations
January 13, 2020State Public Notification requested2 linked violations
May 24, 2019State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
February 22, 2019State Compliance achievedgeneral compliance action — not tied to a specific violation on record
January 11, 2019State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
January 11, 2019State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
April 23, 2014State Compliance achieved1 linked violation
April 15, 2014State Violation/Reminder Notice1 linked violation
December 14, 2011State Public Notification received1 linked violation
November 22, 2011State Compliance achieved1 linked violation
November 15, 2011State Public Notification requested1 linked violation
November 15, 2011State Violation/Reminder Notice1 linked violation
October 27, 2011State Compliance achieved1 linked violation
October 14, 2011State Violation/Reminder Notice1 linked violation
January 1, 2010State Compliance achieved1 linked violation
August 21, 2009State Public Notification received1 linked violation
July 14, 2009State Public Notification requested1 linked violation
July 14, 2009State Violation/Reminder Notice1 linked violation
October 26, 2005State Violation/Reminder Notice2 linked violations
April 10, 2003State Public Notification requested1 linked violation
April 10, 2003State Violation/Reminder Notice1 linked violation
March 31, 2003State Public Notification received1 linked violation
January 10, 2003State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
January 10, 2003State Public Notification requested1 linked violation
January 10, 2003State Violation/Reminder Notice1 linked violation
January 10, 2003State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
June 30, 2002State Compliance achieved1 linked violation
March 31, 2001State Compliance achieved1 linked violation
June 30, 2000State Compliance achieved2 linked violations
September 13, 1999State Compliance achieved2 linked violations
July 26, 1999State Public Notification requested1 linked violation
July 26, 1999State Violation/Reminder Notice1 linked violation
July 26, 1999State Public Notification requested1 linked violation
July 26, 1999State Violation/Reminder Notice1 linked violation
April 19, 1999State Compliance achieved2 linked violations
March 11, 1998State Public Notification received1 linked violation
November 26, 1997State Public Notification received1 linked violation
July 23, 1997State Public Notification received1 linked violation
June 23, 1997State Public Notification received1 linked violation
May 14, 1997State Public Notification received1 linked violation
February 20, 1997State Public Notification received1 linked violation
February 12, 1997State Public Notification received1 linked violation
December 10, 1996State Public Notification received1 linked violation
December 4, 1996State Public Notification received1 linked violation
September 18, 1996State Public Notification received1 linked violation
June 19, 1996State Public Notification received1 linked violation
February 21, 1996State Public Notification received1 linked violation
December 6, 1995State Public Notification received2 linked violations
August 23, 1995State Public Notification received1 linked violation
May 31, 1995State Public Notification received1 linked violation
March 1, 1995State Public Notification received1 linked violation
December 7, 1994State Public Notification received1 linked violation
September 21, 1994State Public Notification received1 linked violation
September 3, 1994State Public Notification requested1 linked violation
May 11, 1994State Public Notification received1 linked violation
January 28, 1994State Compliance achieved1 linked violation
January 19, 1994State Public Notification received1 linked violation
October 13, 1993State Public Notification received2 linked violations
October 13, 1993State Public Notification received3 linked violations
August 7, 1993State Violation/Reminder Notice3 linked violations
August 7, 1993State Public Notification requested3 linked violations
July 21, 1993State Public Notification received2 linked violations
May 7, 1993State Public Notification received2 linked violations
April 28, 1993State Public Notification received2 linked violations
February 10, 1993State Public Notification received2 linked violations
August 24, 1992State Public Notification received2 linked violations
June 4, 1992State Public Notification received2 linked violations
June 3, 1992State Public Notification received2 linked violations
May 7, 1992State Public Notification requested2 linked violations
October 21, 1991State Public Notification received3 linked violations
July 26, 1991State Public Notification received2 linked violations
December 26, 1990State Public Notification received3 linked violations
November 8, 1990State Administrative/Compliance Order without penalty issued2 linked violations
August 21, 1990State Public Notification received2 linked violations
May 9, 1990State Public Notification received2 linked violations
January 3, 1990State Public Notification received2 linked violations
December 13, 1989State Public Notification requested3 linked violations
January 6, 1989State Public Notification requested2 linked violations

Contact

DUTTLINGER, THOMAS A.

815-433-0161

OTTAWA, IL 61350