City of Dubuque Consumer Confidence Water Quality Report 2024City of Dubuque
City Council Meeting
ITEM TITLE
SUMMARY:
SUGGESTED
DISPOSITION:
ATTACHMENTS:
Description
MVM Memo
Copyrighted
June 17, 2024
Consent Items # 028.
City of Dubuque Consumer Confidence Water Quality Report 2024
City Manager is providing notification of the City of Dubuque Consumer
Confidence Water Quality Report 2024 which will be published
documenting the 2023 water quality results.
Suggested Disposition: Receive and File
2024 Water Quality Report MVM Memo
2024 Water Quality Report
Type
City Manager Memo
Staff Memo
Supporting Documentation
THE C
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TO: The Honorable Mayor and City Council Members
FROM: Michael C. Van Milligen, City Manager
SUBJECT: City of Dubuque Consumer Confidence Water Quality Report 2024
DATE: June 12, 2024
Water Department Director Christopher Lester is providing notification of the City of
Dubuque Consumer Confidence Water Quality Report 2024 which will be published
documenting the 2023 water quality results.
I concur with the recommendation and respectfully request Mayor and City Council
approval.
v
Mic ael C. Van Milligen
MCVM:sv
Attachment
cc: Crenna Brumwell, City Attorney
Cori Burbach, Assistant City Manager
Christopher Lester, Water Department Director
Jenny Larson, Chief Financial Officer
Gus Psihoyos, City Engineer
Amy Scheller, Fire Chief
Chris Kohlmann, Chief Information Officer
Mary Rose Corrigan, Public Health Director
Randy Gehl, Public Information Officer
Nick Connolly, Water Operations Supervisor
Tom Berger, Emergency Management
THE CITY OF
DUB E
Masterpiece on the Mississippi
TO: Michael C. Van Milligen, City Manager
FROM: Christopher J. Lester, Water Department Director
DATE: June 12, 2024
RE: City of Dubuque
Consumer Confidence Water Quality Report 2024
Dubuque
MI -America City
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2007.2012.2013
2017*2019
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 2023 water quality results.
BACKGROUND
The Iowa 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 Iowa 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, 2024. The report may be found digitally at
https://www.citVofdubuque.org/2024waterguality. 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 2023.
REQUESTED ACTION
I respectfully request the Consumer Confidence Report be placed on file.
Attachment: 2024 Consumer Confidence Report
Cc: Jenny Larson, Chief Financial Officer
Gus Psihoyos, City Engineer
Amy Scheller, Fire Chief
Chris Kohlmann, Chief Information Officer
Mary Rose Corrigan, Public Health Director
Randy Gehl, Public Information Officer
Nick Connolly, Water Operations Supervisor
Tom Berger, Emergency Management
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Drinking Water Information
Drinking water, including bottled water, may
reasonably be expected to contain at least
small amounts of some contaminants. The
presence of contaminants does not necessarily
indicate that water poses a health risk. More
information about contaminants or potential
health effects can be obtained by submitting a
form on the Environmental Protection Agency's
website at www.epa.gov/ground-water-and-
drinking-water or from the Safe Drinking Water
Hotline (800-426-4791).
Some people may be more vulnerable to
contaminants in drinking water than the
general population. Immuno-compromised
persons including those with cancer undergoing
chemotherapy, persons who have undergone
organ transplants, people with HIV/AIDS or other
immune system disorders, some elderly, and
infants can be particularly at risk from infections.
These people should seek advice about drinking
water from their health care providers. EPA/
CDC guidelines on appropriate means to lower
the risk of infection by Cryptosporidium and
other microbial contaminants are available on
the Environmental Protection Agency's website
at www.epa.gov/ground-water-and-drinking-
water or from the Safe Drinking Water Hotline
(800-426-4791).
Dubuque's average
household water rate for fiscal
year 2025 is $39.06 per month.
This is the fourth lowest of Iowa's largest
cities that soften their water. The highest
(West Des Moines) is 13.18% higher than Dubu
and the average is 1 cent higher than Dubuq
100 gallons
of City water costs only
$0.65
Compare to 100 c
of bottled water
(20 oz. at $1.99 ec
at a convenience store)
costs over $1,270!
Source Water Information
The City of Dubuque obtains water from the sand
and gravel of the Apple -Plum Alluvial aquifer
and the Jordan (Cambrian -Ordovician) aquifer.
Every aquifer has a degree of susceptibility to
contamination because of the characteristics
of the aquifer, overlying materials, and human
activity including contamination from leaking
underground storage tanks, contaminant spills,
and excess fertilizer application. Susceptibility
to contamination generally increases with
shallower aquifers because the characteristics of
the aquifer and the overlying materials provide
little protection from contamination at the land
surface. Susceptibility to contamination generally
decreases with deeper wells in the Jordan aquifer
because the characteristics of the aquifer and the
overlying materials provide moderate protection
from contamination at the land surface.
The Apple -Plum Alluvial aquifer is considered to
be highly susceptible to contamination, while
the Jordan (Cambrian -Ordovician) aquifer
has been determined to be slightly susceptible
to contamination. A detailed evaluation of
your source water was completed by the Iowa
Department of Natural Resources, and is available
on our website, www.cityofdubuque.org/water.
You may also call 563-589-4291 to obtain a copy
of the report.
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Masterpiece on the Mississippi
WATER QUAI ITY
REPORT
2024
Table Definitions
Action Level (AL) - The concentration of a
contaminant that, if exceeded, triggers treatment or
other requirements that a water system must follow.
LRAA - Locational Running Annual Average
Maximum Contaminant Level (MCL) - The highest
level of a contaminant that is allowed in drinking
water. MCLs are set as close to the MCLGs as
feasible using the best available technology.
Maximum Contaminant Level Goal (MCLG) - The
level of a contaminant in drinking water below
which there is no known or expected risk to health.
MCLGs allow for a margin of safety.
Maximum Residual Disinfectant Level (MRDL) -
The highest level of a drinking water disinfectant
allowed in drinking water. There is convincing
evidence that addition of a disinfectant is necessary
for control of microbial contaminants.
Maximum Residual Disinfectant Level Goal
(MRDLG) - The level of a drinking water disinfectant
below which there is no known or expected risk to
health.
N/A - Not Applicable
ND - Not Detected
ppb - parts per billion
ppm - parts per million
RAA - Running Annual Average
Revised Total Coliform Rule (RTCR) - Establishes
a maximum contaminant level (MCL) based
on the presence or absence of total coliforms,
modifies monitoring requirements including
testing for fecal coliforms or E. coli, requires use of
a sample siting plan.
SGL - Single Sample Result
Treatment Technique (TT) - A required process
intended to reduce the level of a contaminant in
drinking water.
DISTRIBUTION SYSTEM REPORT
COMPLIANCE
RANGE
ANALYTE
MCL- (MCLG)
DATE
TYPICAL SOURCE
TYPE
VALUE
MIN
MAX
NO
By-products of drinking water chlorination
Total Trihalomethanes (ppb)
80 (N/A)
LRAA
59
50
63
6/30/2023
Total Haloacetic Acids (ppb)
60 (N/A)
LRAA
11
6
14
3/31/2023
NO
By-products of drinking water chlorination
MRDL = 4.0
Chlorine (ppm)
(MRDLG = 4.0)
RAA
1.1
0.06
1.76
12/31/2023
NO
Water additive used to control microbes; disinfection
Total COliform Bacteria
TT (TT)
RTCR
2 positive
samples
N/A
N/A
2023
NO
Coliforms are bacteria that are naturally present in the environment and are used as an
indicator that other waterborne pathogens may be prresent, or that a potiential pathway
exists through which contamination may enter the drinking water.
FINISHED WATER TAP REPORT
COMPLIANCE
RANGE
L
ANALYTE
MCL MCLG
DATE
VIOLATION
TYPICAL SOURCE
TYPE
VALUE
MIN
MAX
Nitrate [as N] (ppm)
10
10
SGL
0.72
N/A
N/A
2023
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
16
N/A
N/A
7/21/2021
NO
Erosion of natural deposits; Added to water during treatment process
LEAD AND COPPER REPORT
W
i
I
SAMPLES
COMPLIANCE
DETECT
ANALYTE
AL
MCLG
DATE
VIOLATION
TYPICALSOURCE
IiL
TOTAL
EXCEEDAL
TYPE
VALUE
L
MIN.
MAX.
.1111111.
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
ANALYTE
HEALTH ADVISORY LEVEL (ppt)
PFOA (ppt)
5.1
3
5.1
2023
0.004 (interim)
PFOS (ppt)
3.6
3.2
3.6
2023
0.020 (interim)
In 2023 our water system exceeded an EPA drinking water liftetime interim health advisory for the PFAS compounds shown above. Public notice was
previously provided for these contaminants when we became aware of the situation. Please refer to the past notification for more information
regarding these results.
Note: Contaminants with dates, indicate results from the most recent testing done in accordance with regulations.
PFAS CHEMICALS
PFAS, or perfluoroalkyl substances, remains a
significant concern in the drinking water industry
The Environmental Protection Agency, or EPA, is
seeking to implement enforceable regulation or
Maximum Contaminant Levels (MCLs) of 4.0 parts
per trillion for PFOA and PFOS, individually; and for
PFNA, PFHxS, and HFPO-DA (Genx Chemicals), an
MCL of 10 parts per trillion.
In response to these upcoming
requirements, the City is proactively
investing in the advancement of a
new deep well water supply.
Deep well analytics have shown no detects of PFAS
to date per sampling requirements. The estimated
cost to advance a new deep well is estimated at
$4.6 million.
Funding for the project is divided over three years,
with additional funding dedicated in future years for
PFAS removal at the Eagle Point Water Treatment
Plant This commitment underscores Dubuque's
dedication to ensuring high quality drinking water
for its residents.
LEARN MORE
www.cityofdubuque.org/PFAS
THE CITY OF
DUB E
Masterpiece on the Mississippi
FOR QUESTIONS, CONTACT:
Christopher Lester
Water Department Director
563-589-4291