FOND DU LAC, WI · Fond du Lac County

FOND DU LAC WATERWORKS 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 Wisconsin’s official records. Always confirm current status with Wisconsin before making decisions based on this information.

System facts

System ID (PWSID): WI4200469
System type: Community Water System
Population served: 44,303
Service connections: 16,408
Ownership: local government
Water source: groundwater (wells)

Violation history

LSL Inventory
Health-based
LEAD AND COPPER RULE REVISIONS
October 17, 2024 – March 25, 2025
Resolved
Consumer Confidence Report Inadequate Reporting
—
Consumer Confidence Rule
July 1, 2019 – July 11, 2019
Resolved
Monitoring and Reporting (DBP)
—
TTHM
April 1, 2016 – June 30, 2016
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
April 1, 2015 – June 30, 2015
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2011 – December 12, 2011
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
October 20, 2008 – February 22, 2011
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
October 20, 2008 – February 22, 2011
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
January 1, 2008 – January 15, 2010
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
January 1, 2000 – December 31, 2009
Resolved
Monitoring, Regular
—
Radium-228
April 1, 1997 – June 30, 1997
Resolved
Monitoring, Regular
—
Radium-228
January 1, 1997 – March 31, 1997
Resolved
Monitoring, Regular
—
cis-1,2-Dichloroethylene
January 1, 1993 – December 31, 1993
Resolved
Monitoring, Regular
—
Xylenes, Total
January 1, 1993 – December 31, 1993
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
January 1, 1993 – December 31, 1993
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
January 1, 1993 – December 31, 1993
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
January 1, 1993 – December 31, 1993
Resolved
Monitoring, Regular
—
Vinyl chloride
January 1, 1993 – December 31, 1993
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
January 1, 1993 – December 31, 1993
Resolved
Monitoring, Regular
—
trans-1,2-Dichloroethylene
January 1, 1993 – December 31, 1993
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
January 1, 1993 – December 31, 1993
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
January 1, 1993 – December 31, 1993
Resolved
Monitoring, Regular
—
Carbon tetrachloride
January 1, 1993 – December 31, 1993
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
January 1, 1993 – December 31, 1993
Resolved
Monitoring, Regular
—
Trichloroethylene
January 1, 1993 – December 31, 1993
Resolved
Monitoring, Regular
—
1,1,2-Trichloroethane
January 1, 1993 – December 31, 1993
Resolved
Monitoring, Regular
—
CHLOROBENZENE
January 1, 1993 – December 31, 1993
Resolved
Monitoring, Regular
—
Benzene
January 1, 1993 – December 31, 1993
Resolved
Monitoring, Regular
—
Toluene
January 1, 1993 – December 31, 1993
Resolved
Monitoring, Regular
—
Ethylbenzene
January 1, 1993 – December 31, 1993
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
January 1, 1993 – December 31, 1993
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
October 7, 1987 – October 6, 1991
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
October 17, 2024 – March 25, 2025	LSL Inventory	LEAD AND COPPER RULE REVISIONS	Health-based	Resolved
July 1, 2019 – July 11, 2019	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	—	Resolved
April 1, 2016 – June 30, 2016	Monitoring and Reporting (DBP)	TTHM	—	Resolved
April 1, 2015 – June 30, 2015	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
July 1, 2011 – December 12, 2011	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
October 20, 2008 – February 22, 2011	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
October 20, 2008 – February 22, 2011	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
January 1, 2008 – January 15, 2010	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
January 1, 2000 – December 31, 2009	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
April 1, 1997 – June 30, 1997	Monitoring, Regular	Radium-228	—	Resolved
January 1, 1997 – March 31, 1997	Monitoring, Regular	Radium-228	—	Resolved
January 1, 1993 – December 31, 1993	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Resolved
January 1, 1993 – December 31, 1993	Monitoring, Regular	Xylenes, Total	—	Resolved
January 1, 1993 – December 31, 1993	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
January 1, 1993 – December 31, 1993	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
January 1, 1993 – December 31, 1993	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
January 1, 1993 – December 31, 1993	Monitoring, Regular	Vinyl chloride	—	Resolved
January 1, 1993 – December 31, 1993	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
January 1, 1993 – December 31, 1993	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
January 1, 1993 – December 31, 1993	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
January 1, 1993 – December 31, 1993	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
January 1, 1993 – December 31, 1993	Monitoring, Regular	Carbon tetrachloride	—	Resolved
January 1, 1993 – December 31, 1993	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
January 1, 1993 – December 31, 1993	Monitoring, Regular	Trichloroethylene	—	Resolved
January 1, 1993 – December 31, 1993	Monitoring, Regular	1,1,2-Trichloroethane	—	Resolved
January 1, 1993 – December 31, 1993	Monitoring, Regular	CHLOROBENZENE	—	Resolved
January 1, 1993 – December 31, 1993	Monitoring, Regular	Benzene	—	Resolved
January 1, 1993 – December 31, 1993	Monitoring, Regular	Toluene	—	Resolved
January 1, 1993 – December 31, 1993	Monitoring, Regular	Ethylbenzene	—	Resolved
January 1, 1993 – December 31, 1993	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
October 7, 1987 – October 6, 1991	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Archived

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

Enforcement actions

June 12, 2025State Public Notification received1 linked violation
June 12, 2025State Compliance achieved1 linked violation
March 25, 2025State Compliance achieved1 linked violation
August 2, 2019State Violation/Reminder Notice2 linked violations
July 11, 2019State Compliance achieved2 linked violations
July 11, 2019State Compliance achieved1 linked violation
May 15, 2017State Compliance achieved3 linked violations
June 22, 2016State Other2 linked violations
June 21, 2016State Other2 linked violations
June 16, 2016State Violation/Reminder Notice2 linked violations
June 16, 2016State Public Notification requested19 linked violations
June 6, 2016State Public Notification received2 linked violations
July 28, 2015State Violation/Reminder Notice5 linked violations
June 30, 2014State Public Notification received2 linked violations
June 30, 2014State Public Notification received2 linked violations
May 19, 2014State Violation/Reminder Notice15 linked violations
May 19, 2014State Public Notification requested2 linked violations
May 14, 2014State Compliance achieved2 linked violations
December 2, 2013State Violation/Reminder Notice4 linked violations
December 12, 2011State Compliance achieved1 linked violation
December 12, 2011State Compliance achieved1 linked violation
October 31, 2011State Other1 linked violation
January 15, 2010State Compliance achieved32 linked violations
May 7, 2009State Public Notification requested20 linked violations
February 28, 2008State Other12 linked violations
February 28, 2008State Other5 linked violations
February 28, 2008State Other3 linked violations
April 4, 1994State Compliance achieved21 linked violations
February 9, 1994State Violation/Reminder Notice1 linked violation

Contact

FOND DU LAC CITY CLERK - MARGARET HEFTER

Phone not on record

FOND DU LAC, WI 54936-0150