Brookfield, WI · Waukesha County

BROOKFIELD WATER UTILITY 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): WI2680253
System type: Community Water System
Population served: 29,070
Service connections: 10,766
Ownership: local government
Water source: groundwater (wells)

Violation history

Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
January 1, 2024 – December 31, 2024
Archived
Monitoring, Regular
—
Nitrate
January 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Combined Radium (-226 and -228)
January 1, 2024 – December 31, 2024
Archived
Monitoring, Regular
—
Radium-228
January 1, 2024 – December 31, 2024
Archived
Public Notification Violation for NPDWR Violation
—
Public Notice
April 24, 2020 – May 7, 2021
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
April 1, 2020 – June 30, 2020
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
December 31, 2019 – May 7, 2021
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
December 31, 2019 – May 7, 2021
Resolved
Monitoring, Regular
—
Selenium
January 1, 2019 – October 10, 2019
Resolved
Monitoring, Regular
—
Antimony, Total
January 1, 2019 – October 10, 2019
Resolved
Monitoring, Regular
—
Beryllium, Total
January 1, 2019 – October 10, 2019
Resolved
Monitoring, Regular
—
Thallium, Total
January 1, 2019 – October 10, 2019
Resolved
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
January 1, 2019 – December 31, 2019
Resolved
Monitoring, Regular
—
Mercury
January 1, 2019 – October 10, 2019
Resolved
Monitoring, Regular
—
Chromium
January 1, 2019 – October 10, 2019
Resolved
Monitoring, Regular
—
Cadmium
January 1, 2019 – October 10, 2019
Resolved
Monitoring, Regular
—
Arsenic
January 1, 2019 – October 10, 2019
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
October 1, 2018 – December 31, 2018
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
September 1, 2018 – September 30, 2018
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
July 1, 2018 – September 30, 2018
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
April 1, 2018 – June 30, 2018
Resolved
Monitoring, Regular
—
Pentachlorophenol
January 1, 2017 – July 11, 2017
Resolved
Lead Consumer Notice
—
Lead and Copper Rule
January 1, 2017 – March 8, 2017
Resolved
Monitoring, Regular
—
Methoxychlor
January 1, 2017 – July 11, 2017
Resolved
Monitoring, Regular
—
Dalapon
January 1, 2017 – July 11, 2017
Resolved
Monitoring, Regular
—
Diquat
January 1, 2017 – July 11, 2017
Resolved
Monitoring, Regular
—
Endothall
January 1, 2017 – July 11, 2017
Resolved
Monitoring, Regular
—
Glyphosate
January 1, 2017 – July 11, 2017
Resolved
Monitoring, Regular
—
OXAMYL
January 1, 2017 – July 11, 2017
Resolved
Monitoring, Regular
—
Simazine
January 1, 2017 – July 11, 2017
Resolved
Monitoring, Regular
—
Picloram
January 1, 2017 – July 11, 2017
Resolved
Monitoring, Regular
—
Dinoseb
January 1, 2017 – July 11, 2017
Resolved
Monitoring, Regular
—
Hexachlorocyclopentadiene
January 1, 2017 – July 11, 2017
Resolved
Monitoring, Regular
—
Aldicarb sulfoxide
January 1, 2017 – July 11, 2017
Resolved
Monitoring, Regular
—
Carbofuran
January 1, 2017 – July 11, 2017
Resolved
Monitoring, Regular
—
Aldicarb
January 1, 2017 – July 11, 2017
Resolved
Monitoring, Regular
—
Heptachlor
January 1, 2017 – July 11, 2017
Resolved
Monitoring, Regular
—
Heptachlor epoxide
January 1, 2017 – July 11, 2017
Resolved
Monitoring, Regular
—
2,4-D
January 1, 2017 – July 11, 2017
Resolved
Monitoring, Regular
—
2,4,5-TP
January 1, 2017 – July 11, 2017
Resolved
Monitoring, Regular
—
HEXACHLOROBENZENE
January 1, 2017 – July 11, 2017
Resolved
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
July 1, 2015 – September 30, 2015
Resolved
Monitoring, Regular
—
Radium-228
July 1, 2015 – September 30, 2015
Resolved
Monitoring, Regular
—
Combined Radium (-226 and -228)
July 1, 2015 – September 30, 2015
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Gross Alpha, Excl. Radon and U
July 1, 2013 – September 30, 2013
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
June 11, 2013 – August 21, 2013
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Gross Alpha, Excl. Radon and U
April 1, 2013 – June 30, 2013
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Gross Alpha, Excl. Radon and U
January 1, 2013 – March 31, 2013
Resolved
Monitoring, Source Water (GWR)
—
E. COLI
July 14, 2010 – July 29, 2010
Resolved
Monitoring, Source Water (GWR)
—
E. COLI
July 14, 2010 – July 29, 2010
Resolved
Monitoring, Source Water (GWR)
—
E. COLI
July 14, 2010 – July 29, 2010
Resolved
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
January 1, 2009 – March 31, 2009
Resolved
Monitoring, Regular
—
Radium-228
January 1, 2009 – March 31, 2009
Resolved
Monitoring, Regular
—
Combined Radium (-226 and -228)
January 1, 2009 – March 31, 2009
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
October 1, 2008 – November 18, 2008
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
October 1, 2008 – October 31, 2008
Resolved
Monitoring, Regular
—
Nitrate
October 1, 2003 – December 31, 2003
Resolved
Monitoring, Regular
—
Trichloroethylene
January 1, 2001 – September 30, 2001
Resolved
Monitoring, Regular
—
2,4,5-TP
January 1, 1999 – December 31, 1999
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
January 1, 1996 – January 31, 1996
Resolved
Monitoring, Regular
—
Nitrate
January 1, 1994 – December 31, 1994
Resolved

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
January 1, 2024 – December 31, 2024	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Archived
January 1, 2024 – December 31, 2024	Monitoring, Regular	Nitrate	—	Resolved
January 1, 2024 – December 31, 2024	Monitoring, Regular	Combined Radium (-226 and -228)	—	Archived
January 1, 2024 – December 31, 2024	Monitoring, Regular	Radium-228	—	Archived
April 24, 2020 – May 7, 2021	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
April 1, 2020 – June 30, 2020	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
December 31, 2019 – May 7, 2021	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
December 31, 2019 – May 7, 2021	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
January 1, 2019 – October 10, 2019	Monitoring, Regular	Selenium	—	Resolved
January 1, 2019 – October 10, 2019	Monitoring, Regular	Antimony, Total	—	Resolved
January 1, 2019 – October 10, 2019	Monitoring, Regular	Beryllium, Total	—	Resolved
January 1, 2019 – October 10, 2019	Monitoring, Regular	Thallium, Total	—	Resolved
January 1, 2019 – December 31, 2019	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Resolved
January 1, 2019 – October 10, 2019	Monitoring, Regular	Mercury	—	Resolved
January 1, 2019 – October 10, 2019	Monitoring, Regular	Chromium	—	Resolved
January 1, 2019 – October 10, 2019	Monitoring, Regular	Cadmium	—	Resolved
January 1, 2019 – October 10, 2019	Monitoring, Regular	Arsenic	—	Resolved
October 1, 2018 – December 31, 2018	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
September 1, 2018 – September 30, 2018	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
July 1, 2018 – September 30, 2018	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
April 1, 2018 – June 30, 2018	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
January 1, 2017 – July 11, 2017	Monitoring, Regular	Pentachlorophenol	—	Resolved
January 1, 2017 – March 8, 2017	Lead Consumer Notice	Lead and Copper Rule	—	Resolved
January 1, 2017 – July 11, 2017	Monitoring, Regular	Methoxychlor	—	Resolved
January 1, 2017 – July 11, 2017	Monitoring, Regular	Dalapon	—	Resolved
January 1, 2017 – July 11, 2017	Monitoring, Regular	Diquat	—	Resolved
January 1, 2017 – July 11, 2017	Monitoring, Regular	Endothall	—	Resolved
January 1, 2017 – July 11, 2017	Monitoring, Regular	Glyphosate	—	Resolved
January 1, 2017 – July 11, 2017	Monitoring, Regular	OXAMYL	—	Resolved
January 1, 2017 – July 11, 2017	Monitoring, Regular	Simazine	—	Resolved
January 1, 2017 – July 11, 2017	Monitoring, Regular	Picloram	—	Resolved
January 1, 2017 – July 11, 2017	Monitoring, Regular	Dinoseb	—	Resolved
January 1, 2017 – July 11, 2017	Monitoring, Regular	Hexachlorocyclopentadiene	—	Resolved
January 1, 2017 – July 11, 2017	Monitoring, Regular	Aldicarb sulfoxide	—	Resolved
January 1, 2017 – July 11, 2017	Monitoring, Regular	Carbofuran	—	Resolved
January 1, 2017 – July 11, 2017	Monitoring, Regular	Aldicarb	—	Resolved
January 1, 2017 – July 11, 2017	Monitoring, Regular	Heptachlor	—	Resolved
January 1, 2017 – July 11, 2017	Monitoring, Regular	Heptachlor epoxide	—	Resolved
January 1, 2017 – July 11, 2017	Monitoring, Regular	2,4-D	—	Resolved
January 1, 2017 – July 11, 2017	Monitoring, Regular	2,4,5-TP	—	Resolved
January 1, 2017 – July 11, 2017	Monitoring, Regular	HEXACHLOROBENZENE	—	Resolved
July 1, 2015 – September 30, 2015	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Resolved
July 1, 2015 – September 30, 2015	Monitoring, Regular	Radium-228	—	Resolved
July 1, 2015 – September 30, 2015	Monitoring, Regular	Combined Radium (-226 and -228)	—	Resolved
July 1, 2013 – September 30, 2013	Maximum Contaminant Level Violation, Average	Gross Alpha, Excl. Radon and U	Health-based	Resolved
June 11, 2013 – August 21, 2013	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
April 1, 2013 – June 30, 2013	Maximum Contaminant Level Violation, Average	Gross Alpha, Excl. Radon and U	Health-based	Resolved
January 1, 2013 – March 31, 2013	Maximum Contaminant Level Violation, Average	Gross Alpha, Excl. Radon and U	Health-based	Resolved
July 14, 2010 – July 29, 2010	Monitoring, Source Water (GWR)	E. COLI	—	Resolved
July 14, 2010 – July 29, 2010	Monitoring, Source Water (GWR)	E. COLI	—	Resolved
July 14, 2010 – July 29, 2010	Monitoring, Source Water (GWR)	E. COLI	—	Resolved
January 1, 2009 – March 31, 2009	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Resolved
January 1, 2009 – March 31, 2009	Monitoring, Regular	Radium-228	—	Resolved
January 1, 2009 – March 31, 2009	Monitoring, Regular	Combined Radium (-226 and -228)	—	Resolved
October 1, 2008 – November 18, 2008	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
October 1, 2008 – October 31, 2008	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
October 1, 2003 – December 31, 2003	Monitoring, Regular	Nitrate	—	Resolved
January 1, 2001 – September 30, 2001	Monitoring, Regular	Trichloroethylene	—	Resolved
January 1, 1999 – December 31, 1999	Monitoring, Regular	2,4,5-TP	—	Resolved
January 1, 1996 – January 31, 1996	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
January 1, 1994 – December 31, 1994	Monitoring, Regular	Nitrate	—	Resolved

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

Enforcement actions

June 23, 2025State Public Notification received4 linked violations
June 23, 2025State Public Notification received1 linked violation
March 24, 2025State Compliance achieved1 linked violation
March 17, 2025State Violation/Reminder Notice4 linked violations
March 17, 2025State Public Notification requested4 linked violations
March 17, 2025State Public Notification requested2 linked violations
May 7, 2021State Public Notification received1 linked violation
May 7, 2021State Compliance achieved1 linked violation
May 7, 2021State Compliance achieved1 linked violation
May 7, 2021State Compliance achieved1 linked violation
May 7, 2021State Public Notification received1 linked violation
May 7, 2021State Public Notification received1 linked violation
April 19, 2021State Violation/Reminder Notice1 linked violation
April 19, 2021State Violation/Reminder Notice2 linked violations
April 19, 2021State Violation/Reminder Notice2 linked violations
April 19, 2021State Public Notification requested1 linked violation
April 19, 2021State Violation/Reminder Notice1 linked violation
April 19, 2021State Violation/Reminder Notice12 linked violations
March 29, 2021State Compliance achieved1 linked violation
March 29, 2021State Compliance achieved1 linked violation
March 29, 2021State Compliance achieved1 linked violation
March 29, 2021State Compliance achieved1 linked violation
March 29, 2021State Compliance achieved1 linked violation
March 29, 2021State Compliance achieved1 linked violation
March 29, 2021State Compliance achieved1 linked violation
June 15, 2020State Public Notification received1 linked violation
June 15, 2020State Public Notification received1 linked violation
June 15, 2020State Public Notification received12 linked violations
April 25, 2020State Compliance Meeting conducted1 linked violation
April 25, 2020State Formal Notice of Violation issued1 linked violation
March 10, 2020State Compliance achieved1 linked violation
February 11, 2020State Compliance achieved1 linked violation
March 14, 2019State Public Notification received2 linked violations
February 26, 2019State Public Notification requested4 linked violations
November 27, 2018State Formal Notice of Violation issued3 linked violations
September 17, 2018State Public Notification received1 linked violation
September 6, 2018State Compliance Meeting conducted3 linked violations
September 6, 2018State Compliance Meeting conducted2 linked violations
August 23, 2018State Formal Notice of Violation issued3 linked violations
July 11, 2017State Compliance achieved28 linked violations
November 13, 2015State Public Notification requested6 linked violations
December 11, 2014State Compliance achieved2 linked violations
October 24, 2014State Compliance achieved4 linked violations
May 27, 2014State Compliance Meeting conducted1 linked violation
May 1, 2014State Formal Notice of Violation issued1 linked violation
May 1, 2014State Formal Notice of Violation issued1 linked violation
May 1, 2014State Formal Notice of Violation issued1 linked violation
May 1, 2014State Formal Notice of Violation issued1 linked violation
April 9, 2014State Other2 linked violations
April 7, 2014State Other2 linked violations
April 7, 2014State Other3 linked violations
August 21, 2013State Public Notification received4 linked violations
April 10, 2013State Public Notification requested3 linked violations
August 4, 2011State Public Notification issued3 linked violations
June 20, 2011State Public Notification received2 linked violations
July 29, 2010State Compliance achieved3 linked violations
July 29, 2010State Compliance achieved3 linked violations
July 29, 2010State Compliance achieved4 linked violations
July 28, 2010State Violation/Reminder Notice13 linked violations
July 28, 2010State Violation/Reminder Notice2 linked violations
December 3, 2008State Public Notification requested16 linked violations
August 10, 2004State Compliance achieved35 linked violations
March 14, 2001State Public Notification requested36 linked violations

Contact

BROOKFIELD CITY CLERK - MICHELLE LUEDTKE

Phone not on record

Brookfield, WI 53005