Is MONTREAL WATERWORKS required to publish a Consumer Confidence Report?

Yes. MONTREAL WATERWORKS 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 MONTREAL WATERWORKS’s next Consumer Confidence Report due?

MONTREAL WATERWORKS’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.

WI · Iron County

MONTREAL WATERWORKS Water System

Consumer Confidence Report status

MONTREAL WATERWORKS 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 1 item for MONTREAL WATERWORKS that is open and awaiting resolution. None are health-based violations — open items of this kind are most often monitoring or reporting requirements, not water-safety findings.

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

System facts

System ID (PWSID): WI8260121
System type: Community Water System
Population served: 887
Service connections: 190
Ownership: local government
Water source: groundwater (wells)

MONTREAL WATERWORKS is one of 333 community water systems in Wisconsin in the 501 to 3,300 people size category, serving 887 people from groundwater.

As of August 1, 2026, its federal record holds 27 entries between 1993 and 2018, of which 1 remains open; none are health-based.

Of the 27, 21 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 volatile organic chemicals, the Groundwater Rule, and the Stage 1 Disinfectants and Disinfection Byproducts Rule.

Violation history

Failure To Address Deficiency
Health-based
Groundwater Rule
May 2, 2018 – November 2, 2018
Resolved
Treatment Technique No Certif. Operator
Health-based
Stage 1 Disinfectants and Disinfection Byproducts Rule
April 16, 2016 – May 13, 2016
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
January 1, 2016 – March 31, 2016
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
October 1, 2011
Unaddressed
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
October 1, 2011 – December 31, 2011
Resolved
Monitoring, Source Water (GWR)
—
E. COLI
August 4, 2011 – August 16, 2011
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
April 1, 2009 – June 30, 2009
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
April 1, 2009 – June 30, 2009
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
April 1, 2009 – June 30, 2009
Resolved
Monitoring, Regular
—
Trichloroethylene
April 1, 2009 – June 30, 2009
Resolved
Monitoring, Regular
—
Tetrachloroethylene
April 1, 2009 – June 30, 2009
Resolved
Monitoring, Regular
—
CHLOROBENZENE
April 1, 2009 – June 30, 2009
Resolved
Monitoring, Regular
—
Toluene
April 1, 2009 – June 30, 2009
Resolved
Monitoring, Regular
—
Ethylbenzene
April 1, 2009 – June 30, 2009
Resolved
Monitoring, Regular
—
Styrene
April 1, 2009 – June 30, 2009
Resolved
Monitoring, Regular
—
Xylenes, Total
April 1, 2009 – June 30, 2009
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
April 1, 2009 – June 30, 2009
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
January 1, 2009 – February 22, 2011
Resolved
Monitoring, Regular
—
Xylenes, Total
October 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
October 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
1,1,2-Trichloroethane
October 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
Toluene
October 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
CHLOROBENZENE
January 1, 1995 – December 31, 1995
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
December 1, 1994 – December 31, 1994
Archived
Monitoring, Regular
—
1,1-Dichloroethylene
January 1, 1994 – December 31, 1994
Resolved
Monitoring, Regular
—
Ethylbenzene
January 1, 1994 – December 31, 1994
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
November 1, 1993 – November 30, 1993
Resolved

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
May 2, 2018 – November 2, 2018	Failure To Address Deficiency	Groundwater Rule	Health-based	Resolved
April 16, 2016 – May 13, 2016	Treatment Technique No Certif. Operator	Stage 1 Disinfectants and Disinfection Byproducts Rule	Health-based	Resolved
January 1, 2016 – March 31, 2016	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
October 1, 2011	Public Notification Violation for NPDWR Violation	Public Notice	—	Unaddressed
October 1, 2011 – December 31, 2011	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
August 4, 2011 – August 16, 2011	Monitoring, Source Water (GWR)	E. COLI	—	Resolved
April 1, 2009 – June 30, 2009	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
April 1, 2009 – June 30, 2009	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
April 1, 2009 – June 30, 2009	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
April 1, 2009 – June 30, 2009	Monitoring, Regular	Trichloroethylene	—	Resolved
April 1, 2009 – June 30, 2009	Monitoring, Regular	Tetrachloroethylene	—	Resolved
April 1, 2009 – June 30, 2009	Monitoring, Regular	CHLOROBENZENE	—	Resolved
April 1, 2009 – June 30, 2009	Monitoring, Regular	Toluene	—	Resolved
April 1, 2009 – June 30, 2009	Monitoring, Regular	Ethylbenzene	—	Resolved
April 1, 2009 – June 30, 2009	Monitoring, Regular	Styrene	—	Resolved
April 1, 2009 – June 30, 2009	Monitoring, Regular	Xylenes, Total	—	Resolved
April 1, 2009 – June 30, 2009	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
January 1, 2009 – February 22, 2011	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
October 1, 2008 – December 31, 2008	Monitoring, Regular	Xylenes, Total	—	Resolved
October 1, 2008 – December 31, 2008	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
October 1, 2008 – December 31, 2008	Monitoring, Regular	1,1,2-Trichloroethane	—	Resolved
October 1, 2008 – December 31, 2008	Monitoring, Regular	Toluene	—	Resolved
January 1, 1995 – December 31, 1995	Monitoring, Regular	CHLOROBENZENE	—	Resolved
December 1, 1994 – December 31, 1994	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived
January 1, 1994 – December 31, 1994	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
January 1, 1994 – December 31, 1994	Monitoring, Regular	Ethylbenzene	—	Resolved
November 1, 1993 – November 30, 1993	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved

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

September 25, 2024State Compliance achieved1 linked violation
December 1, 2023State Public Notification received1 linked violation
October 30, 2023State Public Notification requested1 linked violation
October 30, 2023State Violation/Reminder Notice1 linked violation
May 9, 2023State Violation/Reminder Notice1 linked violation
May 4, 2023State Compliance achieved1 linked violation
September 18, 2018State Bilateral Compliance Agreement signed5 linked violations
July 20, 2018State Compliance achieved5 linked violations
April 14, 2017State Compliance achieved2 linked violations
March 29, 2017State Violation/Reminder Notice2 linked violations
February 22, 2017State Compliance achieved4 linked violations
May 9, 2016State Violation/Reminder Notice2 linked violations
March 17, 2016State Violation/Reminder Notice2 linked violations
March 17, 2016State Public Notification requested3 linked violations
September 17, 2015State Public Notification requested2 linked violations
October 8, 2013State Public Notification received7 linked violations
June 7, 2012State Public Notification received5 linked violations
October 19, 2011State Violation/Reminder Notice8 linked violations
October 19, 2011State Violation/Reminder Notice8 linked violations
September 29, 2011Federal Compliance achieved3 linked violations
August 27, 2010Federal Final Administrative Order issued3 linked violations
September 29, 2009State Compliance achieved55 linked violations
February 23, 2004State Public Notification requested36 linked violations
June 6, 1996State Compliance achieved118 linked violations
February 1, 1994State Compliance achieved1 linked violation
December 14, 1993State Public Notification received1 linked violation
December 2, 1993State Other1 linked violation
November 29, 1993State Public Notification issued1 linked violation
November 18, 1993State Public Notification requested1 linked violation
November 18, 1993State Violation/Reminder Notice1 linked violation

Common questions

Is MONTREAL WATERWORKS required to publish a Consumer Confidence Report?: Yes. MONTREAL WATERWORKS 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 MONTREAL WATERWORKS’s next Consumer Confidence Report due?: MONTREAL WATERWORKS’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does MONTREAL WATERWORKS have any open drinking water violations on record?: As of August 1, 2026, EPA's federal records show 1 item for MONTREAL WATERWORKS that is open and awaiting resolution. None are health-based violations — open items of this kind are most often monitoring or reporting requirements, not water-safety findings.
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

Not on record

Phone not on record