2018 City of Dubuque Water Quality Report Copyrighted
July 2, 2018
City of Dubuque Consent Items # 6.
ITEM TITLE: 2018 Cityof Dubuque WaterQuality Report
SUMMARY: City Manager providing notice that the City of Dubuque has
published its annual water quality consumer confidence
report.
SUGGESTED DISPOSITION:
ATTACHMENTS:
Description Type
2018 Water Quality Report-NNM Memo City Manager Memo
City of Dubuque Water Quality Report 2018 Staff Memo
2018 Water Quality Report Supporting Documentation
THE CITY OF Dubuque
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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 Reports 2018
DATE: June 27, 2018
Water Department Manager Denise Ihrig is providing notice that the City of Dubuque
has published its annual water quality consumer confidence report.
The City of Dubuque drinking water met all state and federal water quality requirements
and had no drinking water violations in 2017.
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Mic ael C. Van Milligen �� �
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Attachment
cc: Crenna Brumwell, City Attorney
Teri Goodmann, Assistant City Manager
Cori Burbach, Assistant City Manager
Denise Ihrig, Water Department Manager
THE CITY OF Dubuque
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TO: Michael Van Milligen, City Manager
FROM: Denise Ihrig, Water Department Manager
DATE: June 27, 2018
RE: City of Dubuque
Consumer Confidence Water Quality Reports 2018
PURPOSE
The purpose of this memorandum is to provide notification that the City of Dubuque has
published its annual water quality consumer confidence report.
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.
The reports are required to be published and distributed to each water system's customers
on or before July 1, 2018.
DISCUSSION
The City of Dubuque drinking water met all state and federal water quality requirements and
had no drinking water violations in 2017.
REQUESTED ACTION
I respectfully request the Consumer Confidence Report be placed on file.
Cc: MaryRose Corrigan, Health Service Manager
Randy Gehl, Public Information Office
Chris Kohlmann, Information Services Manager
Jean Nachtman, Finance Director
Gus Psihoyos, City Engineer
Rick Steines, Fire Chief
Tom Berger, Emergency Management
CITY OF DUBUQUE
2018 WATER QUALITY REPORT
2017 Drinking Water Summary
The City of Dubuque's Water Department is proud of the high quality of the City's readily
available water supply, which meets all state and federal drinking water quality requirements. The
City's Water Department is pleased to report that Dubuque had no drinking water violations in
2017. The City's water quality testing results shown below, includes testing for regulated
contaminants that were at detectable levels in the distributed water. The contaminants or analytes
are reported in comparison to a maximum contaminant level (MCL) established by the U.S.
Environmental Protection Agency's (EPA) Safe Drinking Water Act. Testing is not required for
each parameter every year. For questions regarding this information, please contact Denise Ihrig,
P.E., Water Department Manager, at 563-589-4291 or the Water Distribution Supervisor, Brant
Schueller, at 563-589-4303.
Source Water Information
The City of Dubuque obtains water from 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.
Susceptibility to contamination generally increases with shallower aquifers, increasing
permeability of the aquifer and overlying material, nearby development or agricultural activity,
and abandoned or poorly maintained wells. The Apple-Plum Alluvial aquifer is considered to be
highly susceptible to contamination, while the Cambrian-Ordovician aquifer has a low degree of
susceptibility. 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.
Drinking Water General 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 posed 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.ena�ov/around-water-and-drinkin�-water .
Some people may be more vulnerable to contaminants in drinking water than the general
population. Immuno-compromised persons such as persons 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 lessen the risk of infection by Cryptosporidium and
other microbial contaminants are available from the Environmental Protection Agency's Website,
www.ena�ov/around-water-and-drinkin�-water .
Lead and Copper Reporting
If present, elevated levels of lead can cause serious health problems, especially for pregnant
women and young children. Lead in drinking water is primarily from materials and components
associated with service lines and home plumbing. The City of Dubuque Water Department is
responsible for providing high quality drinking water, but cannot control the variety of materials
used in plumbing components. When your water has been sitting for several hours, you can
minimize the potential for lead exposure by flushing your tap for 30 seconds to 2 minutes before
using water for drinking or cooking.
If you are concerned about lead in your water, you may wish to have your water tested, please
contactthe City of Dubuque Water Department on 563-889-4291. Information on lead in
drinking water, testing methods, and steps you can take to minimize exposure is available from
the Environmental Protection Agency's website at www.ena.�ov/safewater/lead .
Cit of Dubu ue Water Qualit testin shows the followin results:
DISTRIBUTION SYSTEM REPORT
nrvn�,vre mc�-(mc�c� corvwwnrvce rearvce nere v�o�ar�ory rva�cs�sourece
rvae v,v.ue rv�m rv�ix
TotalT�ihalomethar�es(ppb) @](N/A) LRAA 55.00 55 55 9f30/201� NO By-prod�dsofd�inlrngweterchlonveticn
TotalHaloaceticAcids(ppb) 6J(N/A) LRAA 8.00 8 8 9f30/201� NO By-prod�dsofd�inlrngweterehlonveticn
TotalCNodve(ppm) �DL-4�0 RAA 1.1 0.40 1.62 1P131/201"] NO Wetaedditive�sedWconhnlmionbu
(MI2DL6=4.0)
FINISHED WATER TAP REPORT
corvwwnrvce rearvce
nrv,v,vre mc�mc�c nere v�o�ar�ory rva�cs�sourece
rvae v,v.ue rv�m rv�ix
Nifrek[asNJ(ppm) 10 10 SGL 0.61 N/A N/A 201� NO R�mtffinmfertiliza�se;LeechingfinmsepticfeNc;
sewege;Fsos�on ofvetwel deposRc
Weter edditivewhich promofes strongteeth;Fsosion of
��dae(vv�) a a Mei aee o.3v i.oe zov No �awraia�o���;n���n��wmeen;rz��aam��
�rwde�
Sodiian(ppm) N/A N/A SGL 16 N/A N/A G']/21/2015 NO ErosiovofveWreldeposiL=;AddedYqweterdwing
treetrnmtprocess
LEAD AND COPPER REPORT
6AMPLE6 COMPLIAIVCE DEiECi
AIVALYTE AL MCLG DATE IOLATIO TYPIC9L600RCE
iOiAL EXCEED NPE VALOE MIIV. MAX.
CORosion ofho�sehold pl�mbmg
Iuad(ppb) 15 0 61 1 90tli 4.00 ND TI 201� NO rysG=m;Erosiov ofveWrel deposiL=;
Leeching Gom wood pruavetives
Coppev(ppm) 13 13 61 0 90tli O.OA ND 0.08 201� NO CORosionofho�seholdpl�mbing
ryslmis;Fsos�on ofvetwel deposrts
Note: Contaminants with dates, indicate results from the most recent testing done in
accordance with regulations.
Table DeFmitions
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, reporting in accordance with the EPA's Stage 2
Disinfectant Byproducts Rule
Maximum Contaminant Level (MCL) - The highest level of a contaminant that is allowed in
drinking water. MCLs are set a 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. A Drinking Water Standard has not yet been determined to establish the
Maximum Contaminant Level OR Value for a Range.
ND - Not Detected
ppb - parts per billion
ppm -parts per million
RAA - Running Annual Average
SGL - Single Sample Result