HomeMy WebLinkAbout2015_Water_ReportPipelineYour Drinking Water Is Certified Safe
This issue of Public Works Pipeline contains the City’s annual water quality report, which includes complete
information on the monitoring done on Edina’s drinking water last year. Morningside Neighborhood
residents who receive their water from the City of Minneapolis will find information detailing the quality of
Minneapolis’ water on pages 10-12.
A detailed account of Edina’s water quality is in this issue, including test results on all contaminants deemed
by the Minnesota Department of Health to pose a health risk.
The City’s goal is to provide residents with water that surpasses both state and federal requirements for
safety and quality. This year’s report shows that Edina’s water surpasses regulatory standards on all counts.
For more information, contact Edina Public Works at 952-826-0312.
2015 Water Report
For the Year 2014
Neighborhood Street Reconstructions Are Under Way See Page 5 for details
PipelinePUBLIC WORKS
No-Fault Insurance Protects Edina Residents
By Hannah Watkins
Since November 2014, Edina residents and
business owners who pay for Edina sewer
and water utilities have also received
limited cleanup and property damage
protection for sewer backups and water
main breaks.
Water main breaks may cause water to enter
into property, causing damage. Blockages
or other conditions in the City’s sanitary
sewer lines may cause sewage to back up
into properties that are connected to the
City’s sanitary lines. These instances pose
a public health and safety concern, but it
is often difficult to determine the exact
cause and responsibility.
The League of Minnesota Cities insurance
trust has offered the City of Edina limited
“no fault” sewer coverage and water main
break coverage that will reimburse users
of the water and sewer system for certain
cleanup costs and property damage up
to $40,000, whether or not the City is at
fault.
“It is important that we offer no-fault
insurance to the residents of Edina
because they need to have at least basic
coverage that will help clean up their
basements and properties affected by
sewer backups and water main breaks,”
said Mayor James Hovland. That said,
Hovland cannot stress enough the
importance of also having private
insurance to help cover damage costs
greater than $40,000.
The “no-fault” insurance ensures a quick
clean-up time for sewer back-up and water
main break damage and makes life a little
easier for Edina residents. The owner of
the property can contract with a cleaning
service and then submit a claim to be
reimbursed for that service when damage
occurs.
“The City was looking into how it can go
above and beyond for Edina residents,
so that is one of the driving forces
behind why we made the switch to new
insurance,” said Public Works Coordinator
Dave Goergen.
Proper Lawn Care Improves Edina’s Water Quality
In the interest of sustainability and
environmental stewardship, it is vital to
maintain healthy water systems. Clean,
pure water benefits everyone. Working to
maximize water purity while minimizing
pollutants in our wetlands, lakes and
water supply makes a community
healthier.
Here are seven simple things you can do
now to ensure a healthier tomorrow:
1. Test your soil to make sure your lawn is
healthy and in balance. The University
of Minnesota completes soil tests for
$17. Add nutrients and adjust care as
needed.
2. Avoid fertilizers that contain
phosphorous. The “P” on the NPK rating
on a bag of fertilizer indicates the
amount of phosphorus, so be sure to
choose fertilizer with a “P” rating of
“zero.”
3. Apply the right amount of fertilizer.
Set your spreader to apply fertilizer
at the appropriate rate. Too much
fertilizer is detrimental to your lawn
and ecosystem.
4. Keep leaves, grass clippings and
fertilizer off driveways and streets, so
they don’t wash off into storm drains
and cause highly imbalanced “green”
lakes.
5. Mow grass to a height of three inches.
Taller grass requires less watering since
it holds more moisture.
6. In spring and autumn, overseed your
lawn. In autumn, aerate and dethatch.
A rich, plush lawn is the best defense
against weeds and excess chemical
usage.
7. Leave grass clippings on your lawn.
They will fertilize and enrich your soil.
For more information about lawn care, call
the Engineering Department at 952-826-
0371. For more information about getting
your soil tested, visit soiltest.cfans.umn.
edu.
– Compiled by Frank Petrovic2
Public Works Profile: Nate Kaderlik
By Lauryn Grimes
A Public Service Worker in the Utilities
Division, Nate Kaderlik developed his
strong work ethic and passion through
years of experience.
Kaderlik grew up in Montgomery, Minnesota,
and began working on local farms when
he was very young. He graduated from
Rochester Community and Technical
College in 2004 where he studied
horticulture and golf course maintenance.
Following graduation, he operated his
own tree trimming and landscaping
business for five years.
Kaderlik spent 15 years working for the
Shakopee Mdewakanton Sioux Community
(SMSC) in Shakopee, Minnesota, starting
with general labor and working his way
up the ladder from running push mowers
to spending his last six years in water/
equipment operations.
After more than a decade with SMSC,
Kaderlik wanted to explore other
opportunities in his field. Kaderlik began
his current position with the City of Edina
in December 2014. Even though he hasn’t
worked for the City long, Kaderlik has
already proven his skills and been able to
hone in on the aspects of his profession
he enjoys the most.
“When we went looking for a replacement
for one of our senior water plant
operators, we were looking for some very
specific qualifications,” said Utilities
Supervisor Gary Wells. “We are very lucky
to be able to bring Nate to Edina. He’s got
a ton of knowledge … plus he is at the
forefront with some of the technological
aspects of the job.”
Primarily, Kaderlik works in the water
plants, where he focuses on the water
treatment side of the Utilities Division.
Winter months are a time for his crew
to complete a lot of maintenance, as
they are tasked with ensuring everything
is functioning properly for the summer
months and the rise in irrigation.
“[We have to] make sure everything is
running the best that it can,” said
Kaderlik, whose team also tests water
quality, rates meters, oversees chemical
equipment and checks for possible leaks.
Kaderlik said he was initially overwhelmed
by the number of sites and enterprise
facilities Edina operates.
“I had first-day jitters,” he said. “Going
from knowing everybody to knowing
nobody was a big change for me.” Since
his first day, Kaderlik says the members of
his crew have been very welcoming.
Public Works Coordinator Dave Goergen also
said the City is fortunate to have such a
knowledgeable individual working within
the Utilities Division.
Kaderlik said he is excited to bring his years
of experience to the Department. “I have
experience in everything we do,” he said.
“[At SMSC], we worked in a smaller group,
so everyone had to do everything. Here,
my main focus is water treatment.”
Kaderlik resides in his newly built Prior Lake
home with his wife of six years and three
young children. He enjoys playing softball,
hunting, playing in a local pool league
and spending time with his family.
For more information, call the Public Works
Department at 952-826-0376.
Public Service Worker in the Utilities Division Nate Kaderlik began work for the City in
December 2014.
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Frequently Asked Questions
Q: What should I do when there is water
bubbling out of the street or from my
yard?
A: Call the Utilities Division of the
Public Works Department at 952-826-
0375. Weekdays after 3:30 p.m. or on
weekends or holidays, call the Edina
Police Department’s non-emergency
number, 952-826-1610. Maintenance
staff will be dispatched to the site of
the leak and determine if it is a water
main or service line leak, as well as who
is responsible for the repair (the City or
the homeowner).
Q: What is the difference between a water
main and a service line?
A: Water mains bring water via a large
diameter pipe from the water filtration
plants and wells to the street in front
of your home or business. Your service
line is connected to the City main in
the street. The “curb stop” (valve) is
seven to eight feet underground and
can only be accessed (and turned on or
off) with a special wrench used by the
Utilities Division. We turn your water
off at the curb stop when you request
your water be shut off for a plumber
to make repairs and also to determine
if a water leak is on the City’s or the
homeowner’s side of the service line.
Q: My sewer is backing up! What do I do?
A: If you experience a sewer backup,
immediately call the Utilities Division
at 952-826-0375. Weekdays after 3:30
p.m. or on weekends or holidays, call
the Edina Police Department’s non-
emergency number, 952-826-1610 and
they will dispatch help immediately.
Calling us first doesn’t cost you
anything and we might be able to
help you resolve the problem before
a plumber is required. City crews will
check the sewer main in the street to
make sure it is running properly. If the
blockage is within your service line, a
City employee will instruct you on what
to do next.
Q: I want my water tested. Where do I
take it?
A: The Utilities Division continuously
takes samples of the water it produces
for testing required by the Minnesota
Department of Health and the federal
government’s Safe Drinking Water Act
to maintain safe drinking water in
our community. Results are printed
annually in this report. If you desire
further testing, please call a private
testing laboratory. Search for “water
analysis” or “laboratories-analytical.” In
order to test water, you need to know
what you want it tested for. For more
information, call 952-826-0375 or visit
www.EdinaMN.gov/PublicWorks.
Q: Is “biodegradable” material “flushable”
material?
A: Generally, there are only three
“P’s” that should be flushed down a
toilet – “paper” (toilet style only),
“pee” and “poop.” When grease, paper
towels, wipes, rags, diapers or other
“sanitary” items – even those marketed
as “flushable” – are flushed into the
sanitary system, they create clogs,
which in turn cause sewer back-ups.
– Compiled by Susan Waack
Neighborhood Street Reconstructions Are Under Way
By Jordan Gilgenbach
Drivers know the pains of road
construction well, seeing orange
cones and barricades throughout the
metro. City streets in some Edina
neighborhoods are no exception.
Though it may be inconvenient,
repairing and replacing infrastructure
is integral in preventing further
damage.
To accomplish this, the Engineering
Department prioritizes streets and
utility work for the current year
based on necessity for improvements,
planning projects five years out.
Infrastructure to be repaired or
replaced include streets, storm sewers,
sanitary sewers, water mains, fire
hydrants and street lighting, depending
on the neighborhood. Private utility
companies may also elect to upgrade
or replace underground infrastructure
during these projects.
“A lot of these streets that we’re doing
now were built in the 1960s, so
we’re at 50 or 60 years of life,” said
Engineering Director Chad Millner,
explaining that streets are expected
to last 30 to 40 years. “Maintaining
a strong infrastructure is also vital
to keep future emergency work and
service disruptions at a minimum.”
Projects in progress for this summer
include Arden Park D and 54th Street,
Birchcrest B, Countryside H, Dewey Hill
G, Prospect Knolls B and a portion of
Valley View Road near Braemar Golf
Course.
Millner said that all of these projects
should be completed by November.
Construction timelines vary, depending
on the size of the project and weather.
One of the main concerns residents
have is the day-to-day disruption
of their routines, so Engineering
staff strive to answer any and all
questions that residents in the affected
neighborhoods might have.
Street projects in Edina are paid for with
special assessments to properties in
each neighborhood and with money
from the City’s Utility Fund.
In addition to street reconstruction
projects, 14 sidewalk projects are
scheduled to be completed this
summer. These new sidewalks are
paid for the by City’s Pedestrian
and Cyclist Safety (PACS) Fund. The
revenue in the fund is used exclusively
for improvements to the City’s non-
motorized transportation network.
For more information about street
reconstruction projects, contact the
City’s Engineering Department at 952-
826-0371. To keep up to date on
these projects, visit www.EdinaMN.gov/
Engineering and sign up for “City Extra”
emails at www.EdinaMN.gov/CityExtra.
2015 Pedestrian, Sidewalk and Bike Projects:
• Normandale Road Sidewalk from Benton
Avenue to Valley View Road
• Arden Avenue South Sidewalk from West
50th Street to West 52nd Street
• Minnehaha Boulevard Sidewalk from
West 52nd Street to West 54th Street
• West 52nd Street Sidewalk from Arden
Avenue to Halifax Avenue
• Indianola Avenue Sidewalk from West
50th Street to 200 feet south of West
50th Street
• Arbour Avenue Sidewalk from Grove
Street to West 61st Street
• Sun Road Sidewalk from Olinger
Boulevard to Arbour Avenue
• Interlachen Boulevard Sidewalk from
Mirror Lakes Drive to Vernon Avenue
• Vernon Avenue Sidewalk from Gleason
Road to Blake Road
• West 65th Street Sidewalk from Valley
View Road to France Avenue
• Valley View Road Sidewalk from
McCauley Trail South to Mark Terrace
Drive
• West 54th Street Sidewalk from
Wooddale Avenue to France Avenue
• Heritage Drive Sidewalk from York
Avenue South to Xerxes Avenue South
• Pedestrian-activated flashing beacon
crossing on West 66th Street at West
Shore Drive
• Three pedestrian-actuated flashing
beacon crossings
• Miscellaneous bike facility pavement
markings
Pavement is ground up and reused as a
base for a new roadway on Claredon
Drive as part of the Prospect Knolls B/
Dewey Hill G neighborhood roadway
reconstruction.
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The City of Edina is issuing
the results of monitoring
done on its drinking water
for the period from Jan. 1 to
Dec. 31, 2014.
The purpose of this report is to advance
consumers’ understanding of drinking
water and heighten awareness of the need
to protect precious water resources.
Source of Water
The City of Edina provides drinking water
to its residents from a groundwater
source: 17 wells ranging from 381 to
1,080 feet deep that draw water from
the Mount Simon, Jordan and Prairie Du
Chien-Jordan aquifers.
The water provided to customers may
meet drinking water standards, but the
Minnesota Department of Health has
also made a determination as to how
vulnerable the source of water may be to
future contamination incidents. If you
wish to obtain the entire source water
assessment regarding your drinking
water, please call 651-201-4700 or
1-800-818-9318 (and press 5) during
normal business hours. Also, you can
view it online at www.health.state.
mn.us/divs/eh/water/swp/swa.
Call 952-826-0375 if you have questions
about the City of Edina’s drinking
water or would like information about
opportunities for public participation in
decisions that may affect the quality of
the water.
Results of Monitoring
No contaminants were detected at levels
that violated federal drinking water
standards. However, some contaminants
were detected in trace amounts that
were below legal limits. The table
that follows shows the contaminants
that were detected in trace amounts
last year. (Some contaminants are
sampled less frequently than once a
year; as a result, not all contaminants
were sampled in 2014. If any of these
contaminants were detected the last
time they were sampled for, they are
included in the table along with the
date the detection occurred.)
Key to Abbreviations:
MCLG: Maximum Contaminant Level
Goal: 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.
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 treatment technology.
MRDL: Maximum Residual Disinfectant
Level
MRDLG: Maximum Residual Disinfectant
Level Goal
AL: Action Level: The concentration of a
contaminant which, if exceeded, triggers
treatment or other requirement which a
water system must follow.
90th Percentile Level: This is the
value obtained after disregarding 10
percent of the samples taken that had
the highest levels. (For example, in
a situation in which 10 samples were
taken, the 90th percentile level is
determined by disregarding the highest
result, which represents 10 percent of
the samples.) Note: In situations in
which only five samples are taken, the
average of the two with the highest
levels is taken to determine the 90th
percentile level.
pCi/l: PicoCuries per liter: a measure
of radioactivity.
ppb: Parts per billion, which can also be
expressed as micrograms per liter (μg/l).
ppm: Parts per million, which can
also be expressed as milligrams per
liter (mg/l).
nd: No Detection
N/A: Not Applicable (does not apply)
2014 City of Edina Drinking Water Report
6
Contaminant (units)MCLG MCL
Level Found
Typical Source of ContaminantRange (2013)Average/Result*
1,1-Dichloroethylene (ppb)7 7 nd-.54 .54 Discharge from industrial chemical factories.
Alpha Emitters (pCi/l)0 15.4 5.9-13 13 Erosion of natural deposits.
Barium (ppm)
(07/25/2013)2 2 N/A .14 Discharge of drilling wastes; Discharge from metal refineries;
Erosion of natural deposits.
Combined Radium (pCi/l)0 5.4 1.1-4.9 4.9 Erosion of natural deposits.
Fluoride (ppm)4 4 .84-1.1 1.04
The State of Minnesota requires all municipal water systems
to add fluoride to the drinking water to promote strong
teeth; Erosion of natural deposits; Discharge from fertilizer
and aluminum factories.
Haloacetic Acids (HAA5) (ppb)0 60 4.8-12.1 12.1 By-product of drinking water disinfection.
TTHM (Total trihalomethanes) (ppb)0 80 29.6-32.4 32.4 By-product of drinking water disinfection.
Total Coliform Bacteria 0
Present
>5%
Present N/A 2%**Naturally present in the environment.
Trichloroethylene (ppb)0 5 nd-.61 .61 Discharge from metal degreasing sites and other factories.
Vinyl Chloride (ppb)0 2 nd-.22 .22 Leaching from PVC piping; Discharge from plastics factories.
cis-1,2-Dichloroethylene (ppb)70 70 nd-4.3 4.3 Discharge from industrial chemical factories.
trans-1,2-Dichloroethylene (ppb)100 100 nd-.14 .14 Discharge from industrial chemical factories.
*This is the value used to determine compliance with federal standards. It sometimes is the highest value detected and sometimes is an average of all the detected values. If it is an average, it may contain sampling results from the previous year. ** Follow-up sampling showed no contamination present.
Contaminant (units)MRDLG MRDL *********Typical Source of Contaminant
Chlorine (ppm)4 4 .47-.8 .59 Water additive used to control microbes.
****Lowest and Highest Monthly Average. *****Highest Quarterly Average.
7
Contaminant (units)MCLG AL 90th Percentile Level # sites over AL Typical Source of
Contaminant
Copper (ppm) 1.3 1.3 1.16 1 out of 30 Corrosion of household plumbing systems; Erosion of natural deposits.
Lead (ppb) 0 15 2.4 0 out of 30
Corrosion of household
plumbing systems; Erosion
of natural deposits.
If present, infants and children who drink
water containing lead in excess of the
action level could experience delays in
their physical or mental development.
Children could show slight deficits in
attention span and learning abilities.
Adults who drink this water over many
years could develop kidney problems or
high blood pressure. Lead in drinking
water is primarily from materials and
components associated with service lines
and home plumbing. The City of Edina
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
two 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,
800-426-4791, or at www.epa.gov/
safewater/lead.
Monitoring may have been done for
additional contaminates that do not
have MCLs established for them and are
not required to be monitored under the
Safe Drinking Water Act. Results may be
available by calling 651-201-4700 or
1-800-818-9318 during normal business
hours.
Monitoring for unregulated contaminants
as required by U.S. Environmental
Protection Agency rules (40 CFR 141.40)
was conducted in 2014. Results of the
unregulated contaminant monitoring
are available upon request from Cindy
Swanson, Minnesota Department of
Health, at 651-201-4656.
8
Compliance with
National Primary
Drinking Water Regulations
The sources of drinking water (both
tap water and bottled) include rivers,
lakes, streams, ponds, reservoirs,
springs and wells. As water travels
over the surface of the land or through
the ground, it dissolves naturally
occurring minerals and, in some cases,
radioactive material, and can pick up
substances resulting from the presence
of animals or from human activity.
Contaminants that may be present in
source water include:
Microbial contaminants, such as
viruses and bacteria, which may
come from sewage treatment plants,
septic systems, agricultural livestock
operations and wildlife.
Inorganic contaminants, such as
salts and metals, which can be
naturally occurring or result from
urban stormwater runoff, industrial or
domestic wastewater discharges, oil
and gas production, mining or farming.
Pesticides and herbicides, which may
come from a variety of sources such as
agriculture, urban stormwater runoff
and residential uses.
Organic chemical contaminants,
including synthetic and volatile
organic chemicals, which are by-
products of industrial processes
and petroleum production, and can
also come from gas stations, urban
stormwater runoff and septic systems.
Radioactive contaminants, which
can be naturally occurring or be the
result of oil and gas production and
mining activities.
In order to ensure that tap water is
safe to drink, the U.S. Environmental
Protection Agency (EPA) prescribes
regulations that limit the amount
of certain contaminants in water
provided by public water systems. Food
and Drug Administration regulations
establish limits for contaminants in
bottled water, which must provide the
same protection for public health.
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
and potential health effects can be
obtained by calling the EPA’s Safe
Drinking Water Hotline at 1-800-426-
4791.
Some people may be more vulnerable
to contaminants in drinking water
than the general population.
Immuno-compromised people such
as those with cancer undergoing
chemotherapy, those 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 and Centers for Disease Control
Prevention guidelines on appropriate
means to lessen the risk of infection
by Cryptosporidium are available
from the Safe Drinking Water Hotline
at 1-800-426-4791.
Average Edina Water Chemistry
Hardness = 17 grains per gallon
Iron = less than 1 part per million
pH = 7.6
Fluoride = 0.9 to 1.1 parts per million
Chlorine = 1 to 1.2 parts per million
9
2014 City of Minneapolis Drinking Water Report
The City of Minneapolis
is issuing the results
of monitoring done on its
drinking water for the period
from Jan. 1 to Dec. 31, 2014.
The purpose of this report is to advance
consumers’ understanding of drinking
water and heighten awareness of the
need to protect precious water resources.
Source of Water
The City of Minneapolis provides
drinking water to its residents from
a surface water source: surface water
drawn from the Mississippi River.
The water provided to customers may
meet drinking water standards, but the
Minnesota Department of Health has
also made a determination as to how
vulnerable the source of water may be
to future contamination incidents. If
you wish to obtain the entire source
water assessment regarding your
drinking water, please call 651-201-
4700 or 1-800-818-9318 (and press
5) during normal business hours. Also,
you can view it online at www.health.
state.mn.us/divs/eh/water/swp/swa.
Call 612-661-4949 if you have questions
about the City of Minneapolis’ drinking
water or would like information about
opportunities for public participation
in decisions that may affect the
quality of the water.
Results of Monitoring
No contaminants were detected at
levels that violated federal drinking
water standards. However, some
contaminants were detected in
trace amounts that were below
legal limits. The table that follows
shows the contaminants that were
detected in trace amounts last year.
(Some contaminants are sampled
less frequently than once a year; as
a result, not all contaminants were
sampled for in 2014. If any of these
contaminants were detected the last
time they were sampled for, they are
included in the table along with the
date that the detection occurred.)
Key to abbreviations:
MCLG: Maximum Contaminant Level
Goal: 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.
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 treatment
technology.
TT: Treatment Technique: A required
process intended to reduce the level of
a contaminant in drinking water.
NTU: Nephelometric Turbidity Unit, used
to measure clarity in drinking water.
MRDL: Maximum Residual
Disinfectant Level
MRDLG: Maximum Residual
Disinfectant Level Goal
AL: Action Level: The concentration
of a contaminant which, if exceeded,
triggers treatment or other requirement
which a water system must follow.
90th Percentile Level: This is the
value obtained after disregarding 10
percent of the samples taken that had
the highest levels. (For example, in
a situation in which 10 samples were
taken, the 90th percentile level is
determined by disregarding the highest
result, which represents 10 percent of
the samples.) Note: In situations in
which only five samples are taken, the
average of the two with the highest
levels is taken to determine the 90th
percentile level.
ppb: Parts per billion, which can
also be expressed as micrograms
per liter (μg/l).
ppm: Parts per million,
which can also be expressed as
milligrams per liter (mg/l).
nd: No Detection
N/A: Not Applicable
(does not apply)
1010
Contaminant (units)MCLG MCL Level Found Typical Source of ContaminantRange (2014)Average/Result*
Fluoride (ppm)4 4 .95-1 .97
State of Minnesota requires all municipal water
systems to add fluoride to the drinking water to
promote strong teeth; Erosion of natural deposits;
Discharge from fertilizer and aluminum factories.
Haloacetic Acids (HAA5) (ppb)0 60 1.3-52 24.85 By-product of drinking water disinfection.
Nitrate (as Nitrogen) (ppm)10.4 10.4 N/A .19 Runoff from fertilizer use; Leaching from septic tanks,
sewage; Erosion of natural deposits.
TTHM (Total trihalomethanes)
(ppb)0 80 7.9-61.2 26.03 By-product of drinking water disinfection.
Total Coliform Bacteria 0 Present 0 Present N/A 1%Naturally present in the environment.
*This is the value used to determine compliance with federal standards. It sometimes is the highest value detected and sometimes is an average of all the detected values. If it is an average, it may
contain sampling results from the previous year. 5 out of 2,180 samples were positive for total coliforms. Follow-up sampling showed no contamination present.
**Lowest Monthly Percentage of Samples Meeting the Turbidity Limits. ***Highest Single Measurement.
****Highest and Lowest Monthly Average. *****Highest Quarterly Average.
Contaminant (units)MRDLG MRDL *********Typical Source of Contaminant
Chlorine (ppm)4 4 .5-3.9 3.4 Water additive used to control microbes.
Contaminant (units)MCLG AL 90 Percentile
Level # sites over AL Typical Source of Contaminant
Copper (ppm)
(07/26/2012)1.3 1.3 .07 0 out of 50 Corrosion of household plumbing systems;
Erosion of natural deposits.
Lead (ppb)0 15 3.2 1 out of 50 Corrosion of household plumbing systems;
Erosion of natural deposits.
Contaminant (units)MCLG MCL *****Typical Source of Contaminant
Turbidity (NTU)N/A TT 100 .19 Soil runoff.
Contaminant Unit % Removal Requirement % Removal Achieved # of Quarters out of Compliance Typical Source of Contaminant
Total Organic Carbon % Removed 25-30%43.5-60%0 Naturally present in the environment.
Turbidity is a measure of the clarity of the water. We monitor it because it is a good indicator of the effectiveness of our filtration system.
11
Infants and children who drink water containing lead in excess of the action level could experience delays in their physical or mental
development. Children could show slight deficits in attention span and learning abilities. Adults who drink this water over many years
could develop kidney problems or high blood pressure. Lead in drinking water is primarily from materials and components associated
with service lines and home plumbing. The City of Minneapolis 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 two 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, 800-426-4791, or at
www.epa.gov/safewater/lead.
Monitoring may have been done for additional contaminates that do not have MCLs established for them and are not required to be
monitored under the Safe Drinking Water Act. Results may be available by calling 651-201-4700 or 1-800-818-9318 during normal
business hours.
12
C ity Gets New Jet/Vac
Vehicle
By Hannah Watkins
The Public Works Department has added a
new Jet/Vac vehicle to its fleet.
The vehicle serves as a combination unit,
using two processes to complete a task.
When used for cleaning out sewage drains,
the vehicle’s jetting mode is employed,
where high-pressured water shoots from
a hose. This is followed by vacuuming,
where a hose sucks up the waste that’s
been rinsed from the sewage drain. Use
of the vehicle increases the effectiveness
of cleaning sewers and reduces the time
employees spend in the sewer system.
“The main reason the Public Works
Department purchased this unit is because
it takes the human element out of much
of the work that is done, keeping the
employees safer,” said Utilities Supervisor
Gary Wells.
With this newest addition, the City owns two
Jet/Vac vehicles. Four people will work with
the vehicles year round to clean the sewers,
but may also use the vehicles for other
tasks.
Periodically, the
Public Works
Department will
be asked to assist
in a contractor’s
excavation.
Sometimes,
underground
utilities include
a gas line
that must be
protected from
damage. In these
cases, the Jet/
Vac is gentler
than using a
backhoe. It
washes away dirt
surrounding the
utility line and vacuums it up.
The Public Works Department also trains
with the Fire-Rescue & Inspections
Department’s Special Operations Team
in using the Jet/Vac vehicle, just in
case they are called to the scene of a
trench collapse. In 2012, a man was
trapped under a large piece of concrete
at a property in Edina undergoing
construction. The Jet/Vac truck was used
to assist in the rescue of the worker by
removing dirt and debris to free him.
The Department was given $100,000 when
it traded in a 2003 Jet/Vac vehicle. The
money went toward the new vehicle.
The rest of the money used to purchase
the new $266,000 Jet/Vac vehicle came
from the Utility Fund. The other Jet/Vac
vehicle was purchased in 2013.
For more information, contact Wells at
952-826-0316.
The Public Works Streets Division pose with the Department’s
two Jet/Vac vehicles.
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