Consumer Confidence Water Quality Report 2025 Copyrighted
June 2, 2025
City of Dubuque CONSENT ITEMS # 14.
City Council
ITEM TITLE: Consumer Confidence Water Quality Report 2025
SUMMARY: City Manager providing notification of the City of Dubuque
Consumer Confidence Water Quality Report 2025 which will
be published documenting the 2024 water quality results.
SUGGUESTED Receive and File
DISPOSITION:
ATTAC H M ENTS:
1. MVM Memo
2. Staff Memo
3. 2025 Water CCR for Web
Page 557 of 2490
�ubuque
THE CITY QF �
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TO: The Honorable Mayor and City Council Members
FROM: Michael C. Van Milligen, City Manager
SUBJECT: Consumer Confidence Water Quality Report 2025
DATE: May 29, 2025
Water Department Director Christopher Lester is providing notification of the City of
Dubuque Consumer Confidence Water Quality Report 2025 which will be published
documenting the 2024 water quality results
�
Mic ael C. Van Milligen
MCVM:as
Attachment
cc: Crenna Brumwell, City Attorney
Cori Burbach, Assistant City Manager
Christopher Lester, Water Department Director
Gus Psihoyos, City Engineer
Amy Scheller, Fire Chief
Joe Pregler, Chief Information Officer
Mary Rose Corrigan, Public Health Director
Randy Gehl, Public Information Officer
Nick Connolly, Water Operations Supervisor
Tom Berger, Emergency Management
Page 558 of 2490
Dubuque
THE CITY OF �
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TO: Michael C. Van Milligen, City Manager
FROM: Christopher J. Lester, Water Department Director
DATE: May 12, 2025
RE: City of Dubuque Consumer Confidence Water Quality Report 2025
PURPOSE
The purpose of this memorandum is to provide notification that the City of Dubuque will be
publishing its annual consumer confidence report documenting the 2024 water quality results.
BACKGROUND
The lowa Administrative Code (the Code) 567-42.1(2) identifies the notification and procedure
requirements for publicly owned and operated water supplies. The purpose of the notification
procedure is to protect public health. The lowa Department of Natural Resources assists local
water supply owners with compliance of the Code and provides a detailed report containing
information regarding the water quality of each public water supply.
DISCUSSION
The reports are required to be published and distributed to each water system's customers on
or before July 1, 2025. The report may be found digitally at
https://www.cityofdubuque.orq/2025waterquality. Hard copies are also available from the
following locations: the Eagle Point Water Treatment Plant, Water Distribution Office in the
Municipal Service Center, City Hall, the City Hall Annex, Multicultural Family Center, Carnegie-
Stout Public Library, Water& Resource Recovery Center, City of Dubuque Jule Intermodal, and
upon request by contacting the Water Department.
The City of Dubuque drinking water met all state and federal water quality requirements and had
no drinking water violations in 2024.
REQUESTED ACTION
I respectfully request the Consumer Confidence Report be placed on file.
Attachment: 2025 Consumer Confidence Report
Cc: Jenny Larson, Chief Financial Officer
Gus Psihoyos, City Engineer
Amy Scheller, Fire Chief
Joe Pregler, Chief Information Officer
Mary Rose Corrigan, Public Health Director
Tom Berger, Emergency Management Director
Randy Gehl, Public Information Officer
Nick Connolly, Water Operations Supervisor
Page 559 of 2490
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Dubuque's average household water .� �
rate for fiscal year 2026 is$43.74 per �
month.This is the fourth lowest of lowa's n
largest cities that soften their water.The VUB UE r� ' � �
highest (Des Moines) is 5.2% higher than ' , � "^� �
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Dubuque and the average is 5.2% lower - ' - �
than Dubuque. '—! '
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CITY OF DUBUQUE `.� � � ��'�'
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WATER DEPARTMENT � �--=� �
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� The Dubuque Water Department is � -
��` � dedicated to producing and delivering
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� drinking water that is in compliance with all
_ ] state and federal drinking water standards.
� .��. , ' 1 :�,. -�� � �
j : The City of Dubuque's distribution system �
�� � is composed of 330.4 miles of water mains '
� � ,� ^y��-. +� ranging from 4-inches to 30-inches in
��� �' diameter,8,008 control valves,and 2,606
`'` fire hydrants throughout the city.
�`` �` THE CITY OF
� It is our goal to operate and maintain a DUB E
/ water distribution system consistent with
���� �' established procedures recognized by Nlasterpie�eon thel�lississippi
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��,, � the American Water Works Association
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''� r''" � � ��' ` for efficient management practices.We
, '� .. WATER QUALITY
� continually strive to adopt new and better
'y � methods of delivering the best quality R E PO RT
' ����. , . drinking water.
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� ��; -�.- " � cityofdubuque.org/water 2 0 2 5
�.���� �`� � � 563-589-4291
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Page 560 of 2490
TABLE DEFINITIONS
Action Level (AL) - The concentration of a Maximum Residual Disinfectant Level (MRDL) - ppm- Parts Per Million
contaminant that,if exceeded,triggers treatment The highest level of a drinking water disinfectant
or other requirements that a water system must allowed in drinking water. There is convincing RAA- Running Annual Average
follow. evidence that addition of a disinfectant is Revised Total Coliform Rule(RTCR) -
necessary for control of microbial contaminants. Establishes a maximum contaminant level
LRAA- Locational Running Annual Average (MCL) based on the presence or absence
Maximum Residual Disinfectant Level Goal of total coliforms, modifies monitoring
Maximum Contaminant Level (MCL) - The highest (MRDLG) - The level of a drinking water requirements including testing for fecal
level of a contaminant that is allowed in drinking disinfectant below which there is no known or coliforms or E.coli, requires use of a sample
water. MCLs are set as close to the MCLGs as expected risk to health.
feasible using the best available technology. siting plan.
N/A- Not Applicable SGL- Single Sample Result
Maximum Contaminant Level Goal (MCLG) - The
level of a contaminant in drinking water below ND- Not Detected Treatment Technique (TT) - A required
which there is no known or expected risk to health. process intended to reduce the level of a
MCLGs allow for a margin of safety. ppb- Parts Per Billion
contaminant in drinking water.
DISTRIBUTION SYSTEM REPORT
COMPLIANCE RANGE
ANALYTE MCL- (MCLG� DATE VIOLATION TYPICALSOURCE
TYPE VALUE MIN MAX
Total Trihalomethanes(ppb� 80 (N�A� LRAA 65 51 85 6�30�2024 NO By-products of drinking water chlorination
Total Haloacetic Acids(ppb) 60 �N�A� LRAA 7 6 8 12�31�2024 NO By-products of drinking water chlorination
MRDL=4.0
Chlorine(ppm) RAA 1.1 0.40 1.69 12�31�2024 NO Water additive used to control microbes;disinfection
(MRDLG=4.0�
FINISHED WATER TAP REPORT
COMPLIANCE RANGE
ANALYTE MCL MCLG DATE VIOLATION TYPICALSOURCE
TYPE VALUE MIN MAX
Nitrate[as N] (ppm� 10 10 SGL 0.7 N�A N�A 2024 NO Runoff from fertilizer use;Leaching from septic tanks;sewage;Erosion of natural deposits.
Fluoride(ppm) 4 4 SGL 0.62 0.29 0.95 7�21�2021 NO Water additive which promotes strong teeth;Erosion of natural deposits;Discharge from
fertilizer and aluminum factories
Sodium(ppm� N�A N�A SGL 14 N�A N�A 7�10�2024 NO Erosion of natural deposits;Added to water during treatment process
LEAD AND COPPER REPORT
SAMPLES COMPLIANCE DETECT
ANALYTE AL MCLG DATE VIOLATION TYPICALSOURCE
TOTAL EXCEED AL TYPE VALUE MIN. MAX.
Lead(ppb� 15 0 30 0 90th 5.00 ND 11 2023 NO Corrosion of household plumbing systems;Erosion of natural
deposits;Leaching from wood preservatives
Copper(ppm) 1.3 1.3 30 0 90th 0.03 ND 0.05 2023 NO Corrosion of household plumbing systems; Erosion of natural
deposits
PFAS
RESULT RANGE
ANALVTE DATE HEALTH ADVISORV LEVEL(ppt)
MIN MAX
PFOA(ppt) 2 4 2024 0.004(interim)
PFOS(ppt) 32.4 4.2 2024 0.020(interim)
PFAS
CHEMICALS
In 2024,the City of Dubuque Water system Health Effecs of Exposure to PFAS
exceeded and Environmental Protection Exposure to PFAS may result in a wide range of
Agency drinking water lifetime interim health adverse health outcomes,including:
advisory for the PFAS compounds shown
above. • developmental effects including to
fetuses after exposure during pregnancy
According to the EPA, PFAS are a group of or postnatal development (e.g., low birth
man-made chemicals that have been weight,accelerated puberty,skeletal
in use since the 1940s. PFAS are (or have variations,development of the immune
been) found in a wide variety of consumer system);
products and as an ingredient in firefighting
foam. PFAS manufacturing and processing • cancer (e.g.,testicular, kidney); THEc�TYOF
facilities,airports,and military installations
• liver effects (e.g.,cellular lesions); UB E
are some of the contributors of PFAS
releases into the air,soil,and water. Because • immune effects (e.g.,decreased antibody Masterpiece on theMississippi
of their widespread use,most people have response to vaccination,decreased immune
been exposed to PFAS and there is evidence response immunity);
that exposure to certain PFAS may lead to FOR QUESTIONS,CONTACT:
adverse health effects. • thyroid effects and other effects Christopher Lester
(e.g.,cholesterol changes). Water Department Director
LEARN MORE 563-589-4291
www.cityofdubuque.org/PFAS
www.epa.gov/pfas/our-current-understanding-human-health-and-environmental-risks-pfas
Page 561 of 2490