2016-2017 Water Quality Report for Dubuque, Vernon and Barrington Water Systems Copyrighted
July 5, 2017
City of Dubuque Consent Items # 3.
ITEM TITLE: 2016-2017 Water Quality Report for Dubuque, Vernon, and
Barrington Water Systems
SUMMARY: City Manager providing notice that the City of Dubuque has
published the annual water quality reports for the City of
Dubuque, Barrington Lakes and Vernon water systems.
SUGGESTED DISPOSITION: Suggested Disposition: Receive and File
ATTACHMENTS:
Description Type
Consumer Confidence Water Quality Reports 2017- City Manager Memo
MVM Memo
Staff Memo Staff Memo
Dubuque Supporting Documentation
Barrington Supporting Documentation
Vernon Supporting Documentation
2017 Confidence Report Supporting Documentation
THE CITY OF Dubuque
fta B E I 11p y
Masterpiece 012 the Mississippi 2007.2012«2013
TO: The Honorable Mayor and City Council Members
FROM: Michael C. Van Milligen, City Manager
SUBJECT: City of Dubuque, Barrington Lakes, and Vernon Water System
Consumer Confidence Water Quality Reports 2017
DATE: June 28, 2017
Water Department Manager Denise Ihrig is providing notice that the City of Dubuque
has published the annual water quality reports for the City of Dubuque, Barrington
Lakes and Vernon water systems.
The drinking water for all three systems met all state and federal water quality
requirements and had no drinking water violations in 2016.
1P�' 1 I !�s!Y iAf(JA 4 f RSI
Mic ael C. Van Milligen
MCVM:jh
Attachment
cc: Crenna Brumwell, City Attorney
Teri Goodmann, Assistant City Manager
Denise Ihrig, Water Department Manager
THE CITY OF Dubuque
UBgkE 111-America III
I.
Masterpiece on the Mississippi 2007-2012-2013
TO: Michael Van Milligen, City Manager
FROM: Denise Ihrig, Water Department Manager
DATE: June 27, 2017
RE: City of Dubuque, Barrington Lakes, and Vernon Water System
Consumer Confidence Water Quality Reports 2017
PURPOSE
The purpose of this memorandum is to provide notification that the City of Dubuque has
published the annual water quality reports for Dubuque, Barrington Lakes, and Vernon
water systems.
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 (Iowa DNR) 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 by the water supply owner to each
water system's customers on or before July 1, 2017.
DISCUSSION
The consumer confidence water quality reports contain information on the source of the
drinking water; results of water contaminants sampled and analyzed per the water system's
operating permit; and general information including the Water Department's contact
information and the U.S. Environmental Protection Agency's Safe Drinking Water Hotline
contact number and website address.
The City of Dubuque following purchase of the Barrington Lakes and Vernon water systems
in 2016, is responsible their operation, maintenance, and management. The water supply
for these systems are separate from each other and from the City of Dubuque's water
supply, with connection of these systems to the Dubuque water supply scheduled for later
this year. During the transition or interim period until the Barrington Lakes and Vernon water
systems are connected to the City of Dubuque water supply, a separate water quality report
is available.
The drinking water for all three systems met all state and federal water quality requirements
and had no drinking water violations in 2016. A copy of each Water Quality Report is
attached.
In compliance with the Iowa Administrative Code and the Iowa DNR, the City is required to
distribute the Consumer Confidence Water Quality Report to each customer no later than
July 1, 2017. The Code and the Iowa DNR provide several methods of acceptable delivery.
The City's delivery methods in 2017 include, electronic delivery by method of insertion of an
informational line on the utility bill detailing where the reports may be found and on what
date they are available; posting of the reports on the City's Water Department webpage; a
one day publication of the reports in the Telegraph Herald; and hard copies available at
several public buildings including City Hall and the Carnegie-Stout Library. Hard copies are
also available upon request directly from the City's Water Department.
REQUESTED ACTION
No further action is requested at this time.
2
CITY OF DUBUQUE
2016 WATER QUALITY REPORT
2016 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
2016. 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 are reported
in comparison to a maximum contaminant level (MCL) established by the U.S. Environmental
Protection Agency's (EPA) Safe Drinking Water Act. The EPA also requires the City to monitor
for specific unregulated contaminants,these are contaminants that do not yet have a drinking
water standard. The results are also listed below and are shown as not having an applicable
maximum contaminant level. 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 calling the Environmental Protection Agency's 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 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 Safe Drinking Water Hotline.
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.
Information on lead in drinking water,testing methods, and steps you can take to minimize
exposure is available from the Safe Drinking Water Hotline or at
http://www.epa.gov/safewater/lead.
City of Dubuque Water Quality testing shows the following results:
C
CONTAMINANT MCL-(MCLG) TYPF VAIUE I VR
AWE6(RANGE) RCE DATE TYPICAL SOU
Total Trihalomethanes(ppb) 80(N/A) LRAA 40.00(40-40) 09/30/2016 NO By-products of drinking water chlorination
Total Haloacetic Acids(ppb) 60(N/A) LRAA 8.00(8-8) 09/30/2016 NO By-productsofdrinking water chlorination
Lead(ppb) AL-15 (0) 90th 1.00(No-6) 2015 NO Corrosion of household plumbing systems;Erosion of
natural deposits;Leaching from wood preservatives
Copper(ppm) AL=1.3 (1.3) 90th 0.02(No-0.02) 2015 NO Corrosion of household plumbing systems;Erosion of
natural deposits
DISTRIBUTION SYSTEM
Total Chlorine(ppm) MaD1.=40
(MRDLL4.0) RAA 11(0.06-176) 9/30/2016 NO Water additive used to control microbes
Coliforms are bacteria that are naturally present in the
environment and are used as an indicator that other water
Total Coliform Bacteria TT(TT) RTCR 3 Samples 10/31/2016 NO borne pathogens may be present,or that a potential
Positive pathway exists through which contamination may enter
the drinking water
FINISHED WATER TAP
Water additive which promotes strong teeth;Erosion
Fluoride(ppm) 4(4) SGL 0.6 09/04/2012 NO of natural deposits;Discharge from fertilizer and
aluminum factories
Barium(ppm) 2(2) SGL 0.0201 09/04/2012 NO Discharge of drilling wastes;Discharge from metal
refineries;Erosion of natural deposits
Sodium(ppm) N/A(N/A) SGL 16 07/21/2015 NO Erosion of natural deposits;Added to water during
treatment process
Note: Contaminants with dates indicate results from the most recent testing done in accordance
with regulations.
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, 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.
ND - Not Detected
ppb - parts per billion
ppm -parts per million
RAA - Running Annual Average
RTCR - Revised Total Coliform Rule
SGL - Single Sample Result
Treatment Technique(TT) - A required process intended to reduce the level of contaminant in
drinking water.
2016 WATER QUALITY REPORT FOR
BARRINGTON LAKES
This report contains important information prepared by the City of Dubuque,regarding the water quality in the
Barrington Lakes Water System in 2016. The source of the water was groundwater water.
Barrington Lakes Water Quality testing shows the following results:
CONTAMINANT MCL-IMCLG) COMPLIANCE DATE un TVPICALSOURCE
TYPE VALUE 8(RANGE)
Total Trihalomethanes(ppb) 80(N/A) LRAA 2.00(2-2) 9/30/2016 NO By-products of drinking water chlorination
Lead(ppb) AL=15(0) 90th 2.50(ND-3) 2015 NO Corrosion of household plumbing systems;Erosion of
natural deposits
copper(ppm) AL=1.3(1.3) 90th 0.176(0.0525- 2015 NO Corrosion of household plumbing systems;Erosion of
0.195) natural deposits;Leachingfrom wood preservatives
DISTRIBUTION SYSTEM
Chlorine(ppm) MRDL=a.0 RAA 1.5(ND-3.09) 12/31/2016 NO Water additive used to control microbes
(MRDLG=6.0)
FINISHED WATER TAP
Combined Radium(pCi/L) 5(0) SGL 1.3 6/19/2012 NO Erosion of natural deposits
Sodium(ppm) N/A(N/A) SGL 3.6 1/21/2015 NO
Erosion of natural deposits;Added to water during
treatment process
Note:Contaminants with dates indicate results from the most recent testing done in accordance with regulations.
TABLE DEFINITIONS
AL (Action Level): The concentration of a contaminant which, if exceeded,triggers treatment or other
requirements which a water system must follow
LRAA -Locational Running Annual Average
MCL (Maximum Contaminant Level): 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.
MCLG(Maximum Contaminant Level Goal): The level of a contaminant in drinking water below which
there is no known or expected risk to health
MRDL (Maximum Residual Disinfectant Level): The highest level of a disinfectant allowed in drinking
water. There is convincing evidence that addition of a disinfectant is necessary for control of microbial
contaminants.
MRDLG(Maximum Residual Disinfectant Level Goal): 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.
ND: Not Detected
NTU: Nephelometric Turbidity Units
pCi/L: picocuries per liter
CCR 2016 BARRINGTON LAKES PWSID: 3126301 Page 1 of 2
ppb: parts per billion(or micrograms per liter)
ppm: parts per million(or milligrams per liter)
RAA: Running Annual Average
Range(Low-High): This column represents a range of individual sample results,from lowest to highest,
that were collected during the reporting year
RTCR: Revised Total Coliform rule
SGL: Single Monitoring Period Sample
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 calling the
Environmental Protection Agency's 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 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 healthcare providers. EPA/CDC guidelines on appropriate means to lessen the risk of infection
by Cryptosporidium and other microbial contaminants are available from the Safe Drinking Water Hotline
(800-426-4791).
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. Information on lead
in drinking water,testing methods and steps you can take to minimize exposure is available from the Safe
Drinking Water Hotline or at http://www.epa.gov/safewater/lead.
SOURCE WATER ASSESSMENT INFORMATION
This water supply obtains its water from the dolomite of the Ordovician(abv St. Peter) aquifer. The
Ordovician(abv St. Peter)aquifer was determined to be slightly susceptible to contamination because the
characteristics of the aquifer and overlying materials provide moderate protection from contaminants at the
land surface. The Ordovician(abv St. Peter)well will be slightly susceptible to surface contaminants such
as leaking underground storage tanks, contaminant spills, and excess fertilizer application. The Iowa
Department of Natural Resources completed a detailed evaluation of the source water; you may call 563-
589-4291 to obtain a copy of the report.
CONTACT INFORMATION
CCR 2016 BARRINGTON LAKES PWSID: 3126301 Page 2 of 2
For more information about this report, or for any questions relating to your drinking water,please contact
Denise Ihrig,P.E., Water Department Manager, at 563-589-4291, or Brant Schueller, Water Distribution
Supervisor, at 563-589-4303.
CCR 2016 BARRINGTON LAKES PWSID: 3126301 Page 3 of 2
2016 WATER QUALITY REPORT FOR
VERNON TOWNSHIP
This report contains important information prepared by the City of Dubuque,regarding the water quality in the
Vernon Township Water System in 2016. The source of the water was groundwater water.
Vernon Township Water Quality testing shows the following results:
CONTAMINANT MCE-(MCW) COMKIANCE DATE TYRICRI.WuRa
TYPE I VMuElk(RANDPJ
Copper(ppm) AL-1.3-1.3 90th 0.85610-0134- 2014 NO Corrosion of household plumbing systems;Erosion of
0.984) natural deposits;Leaching from wood preservatives
Lead(ppb) AL=15(0) 90th 0.80IND-2) 2014 NO Corrosion of household plumbing systems;Erosion of
natural deposits
DISTRIBUTION SYSTEM
Chlorine(ppm) MRDL=4.0(MRDLG=4.0) RAA 1A(No-2.6) 12/31/2016 NO Water additive used to control microbes
Coliforms are bacteria that are naturally present in the
1 Sample environment and are used as an indicator that other water
Total Coliform Bacteria Tr ITT) RTCR positive 7/31/2016 NO borne pathogens may be present,or that a potential
pathway exists through which contamination may enter
the drinking water
Total Trihalomethanes(ppb) 80(N/A) SGL 2.32 8/11/2015 NO By-products of drinking water chlorination
FINISHED WATER TAP
Combined Radium(pCi/L) s(0) SGL 3.3 4/20/2016 NO Erosion of natural deposits
Barium(ppm) 2(2) SGL 0.0761 3/11/2014 NO Discharge of drilling wastes;Discharge from metal
refineries;Erosion of natural deposits
Water additive which promotes strong teeth;Erosion of
Fluoride(ppm) 4(4) SGL 0.3 3/18/2014 NO natural deposits;Discharge from fertilizer and aluminum
factories
,Sodium(ppm) N/A(N/A) SGL 24.2 3/11/2014 NO Erosion of natural deposits;Added to water during
treatment process
Note:Contaminants with dates indicate results from the most recent testing done in accordance with regulations.
TABLE DEFINITIONS
AL (Action Level): The concentration of a contaminant that, if exceeded,triggers treatment or other
requirements that a water system must follow
MCL (Maximum Contaminant Level): 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.
MCLG(Maximum Contaminant Level Goal): The level of a contaminant in drinking water below which
there is no known or expected risk to health
MRDL (Maximum Residual Disinfectant Level): The highest level of a disinfectant allowed in drinking
water. There is convincing evidence that addition of a disinfectant is necessary for control of microbial
contaminants.
MRDLG(Maximum Residual Disinfectant Level Goal): 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.
ND: Not Detected
CCR 2016 VERNON TOWNSHIP PWSID:3126315 Page 1 of 2
NTU: Nephelometric Turbidity Units
pCi/L:picocuries per liter
ppb: parts per billion(or micrograms per liter)
ppm: parts per million(or milligrams per liter)
RAA: Running Annual Average
Range(Low-High): This column represents a range of individual sample results,from lowest to highest,
that were collected during the reporting year
RTCR: Revised Total Coliform rule
SGL: Single Monitoring Period Sample
TT (Treatment Technique): A required process intended to reduce the level of contaminant in 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 calling the
Environmental Protection Agency's 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 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 healthcare providers. EPA/CDC guidelines on appropriate means to lessen the risk of infection
by Cryptosporidium and other microbial contaminants are available from the Safe Drinking Water Hotline
(800-426-4791).
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. Information on lead
in drinking water,testing methods and steps you can take to minimize exposure is available from the Safe
Drinking Water Hotline or at http://www.epa.gov/safewater/lead.
SOURCE WATER ASSESSMENT INFORMATION
This water supply obtains its water from the sandstone and dolomite of the Cambrian-Ordovician aquifer.
The Cambrian-Ordovician aquifer was determined to have low susceptibility to contamination because the
characteristics of the aquifer and overlying materials provide natural protection from contaminants at the
land surface. The Cambrian-Ordovician well will have low susceptibility to surface contaminants such as
leaking underground storage tanks, contaminant spills,and excess fertilizer application. The Iowa
Department of Natural Resources completed a detailed evaluation of the source water; you may call 563-
589-4291 to obtain a copy of the report.
CCR 2016 VERNON TOWNSHIP PWSID: 3126315 Page 2 of 2
CONTACT INFORMATION
For more information about this report, or for any questions relating to your drinking water,please contact
Denise Ihrig,P.E., Water Department Manager, at 563-589-4291, or Brant Schueller, Water Distribution
Supervisor, at 563-589-4303.
CCR 2016 VERNON TOWNSHIP PWSID: 3126315 Page 3 of 2
DID YOU 2016
K N 0 W . Drinking Water Summary
• • Point Water Plant Dubuque's Water Department is proud of the high /
produces an aver. • • of I quality of our water supply, which meets all state and
GALLONS of • . • • water per day. The federal drinking water quality requirements. f
plant has the capacity to produce We are pleased to inform you that Dubuque had
• to 18 MILLIONI per day. The no drinking water violations for 2016.
wellscurrent . • . to
Our water quality testing results include substances
• _• IN GALLONS per
day. that were detected in our water. Some of these have
maximum contaminant levels established by the
Safe Drinking Water Act. The EPA also requires us
Dubuque's water distribution system to monitor for certain unregulated substances while
consists of over 321 MILES OF WATER they consider whether or not to enforce limits on
them. Testing is not required for each parameter
MAINS, over 8,000 CONTROL VALVES, every year.
almost 2,900 FIRE HYDRANTS, and over Water
For questions regarding this information, please
23,500 SERVICE CONNECTIONS. visit www.cityofdubuque.org/water or contact Water \'
Department Manager Denise Ihrig, P.E., at 563-
or Water Distribu
100 gallons Scchue lertat 563-58914303tion Supervisor Brant \ u a I I t Y
of City of Quality
C JJ
Dubuque470 Report
water costs
Compare to 100 gallons of bottled2 01 7
water (16.9 oz. at an average $1.59
each at a convenience store)... ;17111�
That's over $17200.
THE CTTY OF
AND Quantity I D2U E
Quality
�G u a 1 it Masterpiece on the Mississippi
HIM. III'
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I
Source Water Information
Jordan across Iowa
The City of Dubuque obtains water from the Across-section of Iowa shows how the Jordan aquifer changes elevation as it runs
Apple-Plum Alluvial aquifer* and the Jordan across the state.Rock formations help filter the water in the aquifer,which needs
(Cambrian Ordovician) Aquifer. decades to recharge,say experts. 0 20 40 60 miles
SW Missouri Middle Des NE
River Raccoon Moines Iowa Cedar Mississippi
Every aquifer has a degree of susceptibility River River River River River
to contamination because of the 1.000 ft. ; I 1,000 ft.
characteristics of the aquifer, overlying Pennsylvanianaquitard �t I niter
materials, and human activity. (local sandstone laquifers) Missiwlolan aQ vejo�tao aQ
Sea level to evaporite Q a Ultard dao aqui{e Sea level
r
Susceptibility to contamination generally Devon aQ�{et
increases with shallower aquifers, increasing -1,000 ft -_ t.siMpO 4 1000 ft.
permeability of the aquifer and overlying M `1
material, nearby development or agricultural
activity, and abandoned or poorly maintained -2,000 ft. ' , -2,000ft.
we Is. \
The Apple-Plum Alluvial aquifer is -3,000 ft. s,000n.
considered to be highly susceptible to
contamination, while the Jordan (Cambrian- n
Ordovician) aquifer has a low degree of �,000ft. / `r 4,000 ft.
susceptibility.
Source:Iowa Department of Natural Resources THE REGISTER
A detailed evaluation of your source water
was completed by the Iowa Department of *Apple-Plum Alluvial aquifer, not shown above, is present along the Mississippi
Natural Resources, and is available on our River in depths ranging from 50 feet up to an estimated 250 feet.
website at www.cityofdubuque.org/water.
You may also call 563-589-4291 to For additional : • , , , - .
obtain a copy of the report.
General Information
Drinking water, including bottled water, HIV/AIDS or other immune system disorders, for providing high quality drinking water, but
may reasonably be expected to contain some elderly, and infants can be particularly cannot control the variety of materials used
at least small amounts of contaminants. at risk from infections. These people should in plumbing components. When your water
The presence of contaminants does not seek advice about drinking water from their has been sitting for several hours, you can
necessarily indicate that water poses health care providers. EPA/CDC guidelines minimize the potential for lead exposure
a health risk. More information about on appropriate means to lessen the risk by flushing your tap for 30 seconds to 2
contaminants or potential health effects can of infection by Cryptosporidium and other minutes before using water for drinking or
be obtained by calling the Environmental microbial contaminants are available from cooking.
Protection Agency's Safe Drinking Water the Safe Drinking Water Hotline.
Hotline (1-800-426-4791). If you are concerned about lead in your
If present, elevated levels of lead can cause water, you may wish to have your water
Some people may be more vulnerable to serious health problems, especially for tested. Information on lead in drinking
contaminants in drinking water than the pregnant women and young children. Lead water, testing methods, and steps you can
general population. Immuno-compromised in drinking water is primarily from materials take to minimize exposure is available from
persons such as persons with cancer and components associated with service the Safe Drinking Water Hotline or at
undergoing chemotherapy, persons who have lines and home plumbing. The City of www.epa.gov/safewater/lead.
undergone organ transplants, people with Dubuque Water Department is responsible
Table Definitions
Action Level (AL) -The concentration of a contaminant that, if exceeded, Maximum Residual Disinfectant Level Goal (MRDLG)- The level of a drinking water
triggers treatment or other requirements that a water system must follow. disinfectant below which there is no known or expected risk to health.
LRAA- Locational Running Annual Average WA- Not Applicable
Maximum Contaminant Level (MCL)- The highest level of a contaminant that is allowed ND - Not Detected
in drinking water. MCLS are set a close to the MCLGs as ppb- parts per billion
feasible using the best available technology.
ppm- parts per million
Maximum Contaminant Level Goal (MCLG) - The level of a contaminant in drinking water RAA- Running Annual Average
below which there is no known or expected risk to health. MCLGs allow for a margin
RTCR- Revised Total Coliform Rule
of safety.
Maximum Residual Disinfectant Level (MRDL)-The highest level of a drinking water SGL- Single Sample Result
disinfectant allowed in drinking water. There is convincing evidence that addition of Treatment Technique(TT)- A required process intended to reduce the level of
a disinfectant is necessary for control of microbial contaminants. contaminant in drinking water.
CONTAMINANT MCL- (MCLG) COMPLIANCE DATE MUTON
TYPE VALUE&(RANGE) TYPICAL SOURCE
Total Trihalomethanes (ppb) 80 (N/A) LRAA 40.00(40-40) 09/30/2016 NO By-products of drinking water chlorination
Total Haloacetic Acids (ppb) 60(N/A) LRAA 8.00(8-8) 09/30/2016 NO By-products of drinking water chlorination
Lead (ppb) AL=15 (0) 90th 1.00(ND-6) 2015 NO Corrosion of household plumbing systems; Erosion of
natural deposits;Leaching from wood preservatives
Copper (ppm) AIL=1.3 (1.3) 90th 0.02(ND-0.02) 2015 NO Corrosion of household plumbing systems;Erosion of
natural deposits
DISTRIBUTION SYSTEM 9r
Total Chlorine (ppm) MRD4.0
(MRDLG=4.0) RAA 1.1(0.06-1.76) 9/30/2016 NO Water additive used to control microbes
Coliforms are bacteria that are naturally present in the
environment and are used as an indicator that other water
Total Coliform Bacteria TT (TT) RTCR 3 Samples 10/31/2016 NO borne pathogens may be present,or that a potential
Positive
pathway exists through which contamination may enter
the drinking water.
FINISHED WATER TAP
Water additive which promotes strong teeth;Erosion
Fluoride (ppm) 4 (4) SGL 0.6 09/04/2012 NO of natural deposits; Discharge from fertilizer and
aluminum factories
Discharge of drilling wastes;Discharge from metal
Barium (ppm) 2 (2) SGL 0.0201 09/04/2012 NO refineries;Erosion of natural deposits
Sodium (ppm) N/A (N/A) SGL 16 07/21/2015 NO Erosionofnaturaldeposits;Addedtowaterduring
treatment process
City of Dubuque
Water Department
,, THE CrrY OF
DUB E
Masterpiece on the Mississippi