2022 Water Quality Report Copyrighted
June 6, 2022
City of Dubuque Consent Items # 020.
City Council Meeting
ITEM TITLE: 2022 Water Quality Report
SUMMARY: City Manager providing a copy of the 2022 Water Quality Report Public
Information Brochure.
SUGGESTED Suggested Disposition: Receive and File
DISPOSITION:
ATTACHMENTS:
Description Type
2022 Water Quality Report Supporting Documentation
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Drinking Water Information Source Water Information THE CITY
TOF
Drinking water, including bottled water, may reasonably The City of Dubuque obtains water from the sand and v
be expected to contain at least small amounts of some gravel of the Apple-Plum Alluvial aquifer and the Jordan Masterpiece on the Mississippi
contaminants. The presence of contaminants does not (Cambrian-Ordovician) aquifer. Every aquifer has a necessarily indicate that water poses a health risk. More degree of susceptibility to contamination because of the Water Q u a Iity Report
information about contaminants or potential health characteristics of the aquifer, overlying materials, and
effects can be obtained by submitting a form on the human activity including contamination from leaking ili
Environmental Protection Agency's website at www.epa. underground storage tanks, contaminant spills, and excess
gov/ground-water-and-drinking-water or from the Safe fertilizer application. Susceptibility to contamination "'';,
Drinking Water Hotline (800-426-4791). generally increases with shallower aquifers because the A�Y` �Y
characteristics of the aquifer and the overlying materials f`'' _
Some people may be more vulnerable to contaminants provide little protection from contamination at the 4 s \`
in drinking water than the general population. Immuno- land surface. Susceptibility to contamination generally
compromised persons including those with cancer decreases with deeper wells in the Jordan aquifer because k ilL.*, :144.10g
undergoing chemotherapy, persons who have undergone the characteristics of the aquifer and the overlying -
organ transplants, people with HIV/AIDS or other immune materials provide moderate protection from contamination
system disorders, some elderly, and infants can be at the land surface.
particularly at risk from infections. These people should
seek advice about drinking water from their health care The Apple-Plum Alluvial aquifer is considered to be highly
providers. EPA/CDC guidelines on appropriate means to susceptible to contamination, while the Jordan (Cambrian ``. .
lower the risk of infection by Cryptosporidium and other Ordovician) aquifer has been determined to be slightly iQa(�
c *
microbial contaminants are available on the Environmental susceptible to contamination. A detailed evaluation of
Protection Agency's website at www.epa.gov/ground-water- your source water was completed by the Iowa Department „741\AN k
and-drinking-water or from the Safe Drinking Water Hotline of Natural Resources, and is available on our website, `-_-
(800-426-4791). www.cityofdubuque.org/water. You may also call 563-589-
4291 to obtain a copy of the report.
1
For questions regarding this 1
information, please contact Have you signed - -
Christopher Lester, Water Department __ :o_
Manager, at 563-589-4291. up for WaterSmart? —= .-=- 1--\. GP.
k • View and pay bills _._______
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• Track daily water usage ,� � . , ,r
• View tips on how to save4
1 • Sign up for leak alerts...and moreLipei.e ��
SIGN UP TODAY! 1
ri'll.-
j 1.„ , , www.cityofdubuque.org/watersmart _
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cityofdubuque.org/2022waterquality
I � i I WD006-050422
Table Definitions
Action Level (AL)-The concentration of a contaminant that, if exceeded, triggers WA- Not Applicable
treatment or other requirements that a water system must follow. ND Not Detected
LRAA- Locational Running Annual Average
ppb- parts per billion
Maximum Contaminant Level (MCL)-The highest level of a contaminant that is ppm parts per million
allowed in drinking water. MCLs are set a close to the MCLGs as feasible using the
best available technology. RAA- Running Annual Average
Maximum Contaminant Level Goal (MCLG)-The level of a contaminant in drinking Revised Total Coliform Rule(RTCR)- Establishes a maximum contaminant level
water below which there is no known or expected risk to health. MCLGs allow for (MCL) based on the presence or absence of total coliforms, modifies monitoring
a margin of safety. requirements including testing for fecal coliforms or E. coli, requires use of a
Maximum Residual Disinfectant Level(MRDL)-The highest level of a drinking water sample siting plan.
disinfectant allowed in drinking water. There is convincing evidence that addition SGL-Single Sample Result
of a disinfectant is necessary for control of microbial contaminants. Treatment Technique(TT)-A required process intended to reduce the level of a
Maximum Residual Disinfectant Level Goal(MRDLG)-The level of a drinking water contaminant in drinking water.
disinfectant below which there is no known or expected risk to health.
DISTRIBUTION SYSTEM REPORT '
COMPLIANCE
ANALYTE MCL-(MCLG) DATE VIOLATION # TYPICAL SOURCE
N NiMMMIlliliff. VALUE MIN
LM
Total Trihalomethanes(ppb) 80(N/A) LRAA 54 43 63 12/31/2021 NO By-products of drinking water chlorination
Total Haloacetic Acids(ppb) 60(N/A) LRAA 8 6 9 12/31/2021 NO By-products of drinking water chlorination
MRDL=4.0
Total Chlorine(ppm) (MRDLG=4.0) RAA 1.1 0.67 1.77 12/31/2021 NO Water additive used to control microbes;disinfection
Total Coliform Bacteria TT (TT) RTCR 0 positive N/A N/A 2021 NO Coliforms are bacteria that are naturally present in the environment and are used as an indicator that other waterbome pathogens may be prresent,or
samples that a potiential pathway exists through which contamination may enter the drinking water.
FINISHED WATER TAP REPORT
COMPLIANCE RANGE
ANALYTE MCL MCLG DATE VIOLATIO TYPICAL SOURCE
ilmTYPE VALUE MIN MAX
Nitrate[as N](ppm) 10 10 SGL 0.56 N/A N/A 2021 NO Runoff from fertilizer use;Leaching from septic tanks;sewage;Erosion of natural deposits.
Fluoride(ppm) 4 4 MCL 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
Gross Alpha excluding Uranium(piC/L) 15 0 MCL <2.2 N/A N/A 2018 NO Erosion of natural deposits of certain minerals that are radioactive and may emit a form of radiation known as alpha radiation.
LEAD AND COPPER REPORT
SAMPLES COMPLIANCE DETECT
ANALYTE a MCLG EXCEED DATE VIOLATION TYPICAL SOURCE
TOTAL AL TYPE VALUE MIN. MAX.
Lead(ppb) 15 0 34 1 90th 7.00 ND 23 2020 NO Corrosion of household plumbing systems;Erosion of natural deposits;Leaching from wood preservatives
Copper(ppm) 1.3 1.3 34 0 90th 0.04 ND 0.05 2020 NO Corrosion of household plumbing systems;Erosion of natural deposits
UNREGULATED CONTAMINANT MONITORING RULE(UCMR 4)REPORT
RAW WATER
RANGE
ANALYTE NO.OF SAMPLES AVERAGE YEAR COMMENTS:Unregulated contaminant monitoring helps EPA to determine where certain contaminants occur and whether the Agency should consider regulating those contaminants in the
VALUE MIN MAX future.
IMMII
Bromide(ppb) 2 30.50 21.0 40.0 2018 These samples were collected as part of the requirements for UCMR 4.
Total Organic Carbon(ppm) 2 1.95 1.8 2.1 2018 These samples were collected as part of the requirements for UCMR 4
FINISHED WATER
Manganese(ppb) 2 1.50 1.0 2.0 2018 These samples were collected as part of the requirements for UCMR 4
Germanium(ppb) 2 <0.3 <0.3 <0.3 2018 These samples were collected as part of the requirements for UCMR 4
DISTRIBUTION SYSTEM REPORT
Chloroacetic acid(ppb) 2 <2.0 <2.0 <2.0 2018 These samples were collected as part of the requirements for UCMR 4
Bromoacetic acid(ppb) 2 <0.3 <0.3 <0.3 2018 These samples were collected as part of the requirements for UCMR 4
Dichloroacetic acid(ppb) 2 6.60 6.10 7.10 2018 These samples were collected as part of the requirements for UCMR 4
Trichloroacetic acid(ppb) 2 2.20 1.80 2.60 2018 These samples were collected as part of the requirements for UCMR 4
Bromochloroacetic acid(ppb) 2 2.70 2.50 2.90 2018 These samples were collected as part of the requirements for UCMR 4
Dibromoacetic acid(ppb) 2 1.05 1.00 1.10 2018 These samples were collected as part of the requirements for UCMR 4
Bromodichloroacetic acid(ppb) 2 1.15 1.00 1.30 2018 These samples were collected as part of the requirements for UCMR 4
Chlorodibromoacetic acid(ppb) 2 0.61 0.52 0.69 2018 These samples were collected as part of the requirements for UCMR 4
Tribromoacetic acid(ppb) 2 0.10 <0.2 2.0 2018 These samples were collected as part of the requirements for UCMR 4
Note: Contaminants with dates, indicate results from the most recent testing done in accordance with regulations.
Lead & Copper Reporting
If present, elevated levels of lead can cause seriousIiiir ..•..,,,...,
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health problems, especially for pregnant women and ,4����
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young children. Lead in drinking water is primarily _ ` I .. .,,,1 , . .
'
from materials and components associated with '' .., ,�,. %[ii •i
service lines and home plumbing. The City of Dubuque t ��It11�iit‘
Water Department is responsible for providing high i 1 _
quality drinking water, but cannot control the variety ' . /41 _..�.i A -'. A � .q.* t
of materials used in plumbing components. When - ' - -= ser \.L a +� L'
your water has been sitting for several hours, you can . ` "� �' - , 'iive
minimize the potential for lead exposure by flushing . Cam i i
your tap for 30 seconds to 2 minutes before using the
water for drinking or cooking. Dubuque's average household water rate for -
fiscal year 2023 is $33.18 per month. -
If you are concerned about lead in your water, you may 1.
wish to have your water tested. Information on lead This is the second lowest of Iowa's largest cities that
in drinking water, testing methods, and steps you can soften their water. The highest (West Des Moines) is
take to minimize exposure is available from the Safe 26% higher than Dubuque and the average :s l V
Drinking Water Hotline or at o ,'
http://www.epa.gov/safewater/lead. is 7/o higher than Dubuque.
1
CITY OF DUBUQUE
WATER DEPARTMENT 100 gallons of bottled water Compare to 100 gallons
�
} of City water costs only » (20 oz. at$1.19 each
www.cityofdubuque.org/water $0.55 at a convenience store) y_ -
563 589 4291costs over $1,100!