DDW-2024-008247

PG 1PUBLIC WATER SYSTEM ID: 18007
Improving
quality of
life today –
Creating
a better
tomorrow
GRANGER-HUNTER IMPROVEMENT DISTRICT
Annual Water Quality
Report for 2024
PG 2
We at Granger Hunter Improvement District work around the clock to provide top-quality water to every
tap. We ask that all our customers help us protect our water sources, which are the heart of our communi-
ty, our way of life, and our children’s future.
Where Your Drinking Water Comes From
We are pleased to present to you this year’s Annual Drinking Water Quality Report. This report is designed
to inform you about the quality of the water and services we deliver to you every day. Our constant goal
is to provide you with a safe and dependable supply of drinking water. We want you to understand the
efforts we make to continually improve the water treatment process and protect our water resources. We
are committed to ensuring the quality of your water. Our water sources have been determined to be from
groundwater and surface water sources. Our water sources are 6 groundwater wells and surface water
from Jordan Valley Water Conservancy District.
We Protect the Source
The Drinking Water Source Protection Plan for Granger Hunter Improvement District is available for your
review. It contains information about source protection zones, potential contamination sources and man-
agement strategies to protect our drinking water. Our sources have been determined to have a low level of
susceptibility from potential contamination from sources such as septic tanks, roads, and residential areas.
We have also developed management strategies to further protect our sources from contamination. Please
contact us if you have questions or concerns about our source protection plan.
Pesticides
Parameter Units 2023
Maximum
2023
Minimum
2023
Average
MONITORING CRITERIA Last
Sampled
Comments
/Likely
Source(s)MCL MCLG Violation
PESTICIDES/PCBs/SOCs
Bis(2ethylhexyl)
phthalate ug/L ND ND ND 6 0 NO 2023
Discharge from
rubber and chemi-
cal factories.
All other Parameters ug/L ND ND ND 0 NO 2023 Various Sources.
ABOUT YOUR WATER
PG 3
Your response to the drought over the past
two years has been incredible. Significant
water use reductions have helped avoid
more extreme economic and environmental
impacts. Despite one winter of great snow,
we are still recovering from multiple years
of drought. Any water we save this year
puts us in a stronger position next year,
conserves this precious resource and
allows us to get more water to the Great
Salt Lake. We have discovered it takes
much less water than previously thought
to meet our water needs. Let’s use only
what’s necessary!
PG 3
What Is in Your Drinking Water
The sources of drinking water (both tap water and bottled water) include rivers, lakes, streams, ponds, res-
ervoirs, 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 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 storm-
water 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.
To ensure that tap water is safe to drink, the Environmental Protection Agency (EPA) prescribes regula-
tions that limit the amount of certain contaminants in water provided by public water systems. The Food
and Drug Administration (FDA) 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 Envi-
ronmental Protection Agency’s Safe Drinking Water Hotline at 800- 426-4791.
PG 4
Our Water Met and Exceeded State
and Federal Requirements In 2023.
Granger Hunter routinely monitors constituents in our drinking water in accordance with the Federal and
Utah State laws. The following table shows the results of our monitoring for the period of January 1st to
December 31st, 2023. All drinking water, including bottled drinking water, may be reasonably expected to
contain at least small amounts of some constituents. It’s important to remember that the presence of these
constituents does not necessarily pose a health risk.
Microbiological
We look for bacteria regularly, as required by law, and there are 100 locations in the water system where we
take samples for analysis.
Parameter Units Number of
samples taken
Positive
Samples Violation Comments/Likely Source(s)
MICROBIOLOGICAL
Total Coliform Present/Not
present 1200+Not > 5%NO Naturally present in the environment.
All other Parameters Present/Not
present 1200+0 NO Bacteria found in the lower intestine of
warm-blooded organisms.
Jason Hidebrand, Water Quality Technician.
PG 5
MCL - Maximum Contaminant Level: This is the highest level
allowed for a pollutant in drinking water. MCLs are set as close
as possible to the goal using the best available technology.
AL - Action Level: The concentration of a contaminant
which, if exceeded, triggers treatment or other
requirements which a water system must follow.
Water crew identifying water line material.
LEAD AND COPPER RULE
REVISIONS (LCRR)
Revisions to the Lead and Copper Rule,
effective December 16, 2021, are designed to
better protect children and communities from
the risks of lead exposure. The implementa-
tion of this rule has begun, however, there
are additional changes on the way. The EPA
announced that it intends to further revise
its regulation on water. The Lead and Cop-
per Rule Improvements (LCRI) are expected
before October 2024.
Lead and Copper
The most recent tests were taken in 2022. We take water samples from 50 different homes in our system
every three years to test them for lead and copper.
Lead violation is determined by the 90th percentile result. Copper violation is determined by the 90th
percentile result.
Parameter Units 2022
Maximum
2022
Minimum
2022
Average
MONITORING CRITERIA Comments
/Likely Source(s)MCL MCLG Violation
Lead ug/L 4.1 ND 0.001 AL = 15 NE NO
Corrosion of household plumbing
systems, erosion of naturally occurring
deposits.
Copper ug/L 0.5 0.009 0.12 AL = 1300 NE NO
Corrosion of household plumbing
systems, erosion of naturally occurring
deposits.
Water crew identifying water line material using a valve maintenance vehicle.
PG 5
PG 6
Run Water After Vacation
Another factor that affects water quality in
your home is how “stale” the water is. When
you leave your home or business for a long
time, as you may when you take a vacation,
the water in the pipes and plumbing doesn’t
move. When water has been sitting in the
pipes for days, bacteria can grow, and if you
have lead or copper plumbing, those metals
can start to seep into the water. After being
away for a long time run the water on full
blast for 30 seconds to 2 minutes before
drinking. Cold fresh water drawn from the
outside should always be used for cooking.
PG 6
Water
Meter
Water
Main
Stop and
Waste
Sewer
Clean-out
Wastewater
Main
Homeowner
Responsibility
GHID
Responsibility
HomeownerResponsibilityGHIDResponsibility
PRIVATE WATER RESPONSIBILITY
PG 7
Check Your Home or Business’ Plumbing for Lead and Copper
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 plumb-
ing. Granger-Hunter is responsible for providing high-quality drinking water and removing lead pipes but
cannot control the variety of materials used in plumbing components in your home. You share the respon-
sibility for protecting yourself and your family from the lead in your home plumbing. You can take respon-
sibility by identifying and removing lead materials within your home plumbing and taking steps to reduce
your family’s risk. Before drinking tap water, flush your pipes for several minutes by running your tap, taking
a shower, doing laundry, or a load of dishes. You can also use a filter certified by an American National
Standards Institute accredited certifier to reduce lead in drinking water. If you are concerned about lead in
your water and wish to have your water tested, contact Water Quality at 801-955-2283. Information on lead
in drinking water, testing methods, and steps you can take to minimize exposure is available at
http://www.epa.gov/safewater/lead.
Granger-Hunter has been working diligently to identify the material that every service line is made of;
however, we have not found any lead. You may be able to help determine if you or your loved ones are
being exposed by determining on your own if your service line is made of lead. Service lines typically
enter the home in the basement or crawl space. If the pipe is lead, it will
have a dull finish that shines brightly when scratched with a key or coin.
Using a magnet can also help you identify a lead pipe because even a
strong magnet will not cling to lead.
We appreciate your help in keeping your water safe. Please, scan the code
for more information and photos of what to look for.
Ensuring a Lead-free Community
PG 8
We work hard to provide high-quality water when it arrives on your property. Once the water we provide
passes through the meter on your property, however, it is exposed to a whole new environment in your
home that we have no control over. But you do.
Some of the things that can change the water quality on your property include your plumbing and pipe ma-
terial, how long you go without running the water, and whether or how you connect outdoor hoses to your
home’s water supply.
CROSS-CONNECTION CONTROL
Cross-connections that contaminate drinking water distribution lines are a major concern. A cross-connec-
tion is formed at any point where a drinking water line connects to equipment or water sources of ques-
tionable quality.
Contamination can occur when the pressure in the equipment or system fluctuates. For more information
on backflow prevention, visit our website at ghid.org.
IMPORTANT: When GHID installs a backflow device at the
meter to protect the public water supply, it will create a closed
system in your home. Damage may be caused if the excess
pressure build-up inside your water heater tank does not have
an adequate place to release. Please inspect your water
heater and have a thermal expansion tank installed if needed.
Connect Outdoor Hoses
A third factor that can influence water quality in your home is
connections to the water outside your home. The outdoor
spigot connection to a hose provides a potential way for
pollutants to enter your plumbing. If you use the hose to spray
chemicals on your yard by connecting the nozzle to a spray
bottle, or if you have a sprinkler system connected, there is the
potential for chemicals from the bottle or the lawn to be
accidentally sucked back into your internal plumbing.
YOUR ROLE IN WATER QUALITY
PG 9
Primary Inorganic Chemicals
Parameter Units 2023
Maximum
2023
Minimum
2023
Average
MONITORING CRITERIA Last
Sampled Comments/Likely Source(s)
MCL MCLG Violation
Antimony ug/L ND ND ND 6.00 6.00 No 2023 Discharge from petroleum refineries; fire
retardants; ceramics; electronics; solder.
Arsenic ug/L 4.31 ND 0.5 10.0 0.0 No 2023 Erosion of naturally occurring deposits and
runoff from orchards.
Asbestos MFL ND ND ND 7.0 7.0 No 2023 Decay of asbestos cement in water mains;
erosion of natural deposits.
Barium ug/L 134 ND 54.4 2000 2000 No 2023 Erosion of naturally occurring deposits.
Beryllium ug/L ND ND ND 4 4 No 2023 Discharge from metal refineries and coal burn-
ing factories.
Cadmium ug/L 0.0002 ND 0.00002 5.00 5.00 No 2023 Corrosion of galvanized pipes; erosion of
natural deposits.
Copper ug/L 38 ND 1.3 NE NE No 2023 Erosion of naturally occurring deposits.
Chromium ug/L 9.39 ND 0.0 100.0 100.0 No 2023 Discharge from steel and pulp mills; Erosion of
natural deposits.
Cyanide, Free ug/L 3.7 ND 0.5 200.0 200.0 No 2023 Discharge from steel/metal factories; dis-
charge from plastic and fertilizers.
In the year 2000, residents of Salt Lake County voted to fluoridate drinking water. (Fluoride is added at the Source)
Fluoride mg/L 0.9 ND 0.4 4.0 4.0 No 2023 Erosion of naturally occurring deposits and
discharge from fertilizers.
Lead ug/L 1 ND 0.06 NE NE No 2023 Erosion of naturally occurring deposits.
Mercury ug/L ND ND ND 2.00 2.00 No 2023 Erosion of naturally occurring deposits and
runoff from landfills.
Nickel ug/L 3.5 ND 0.1 NE NE No 2023 Erosion of naturally occurring deposits.
Nitrate mg/L 2.9 ND 0.5 10.0 10.0 No 2023
Runoff from fertilizer, leaching from septic
tanks, and naturally occurring organic
material.
Nitrite mg/L ND ND ND 1.0 1.0 No 2023
Runoff from fertilizer, leaching from septic
tanks, and naturally occurring organic
material.
Selenium ug/L 2.4 ND 0.4 50.0 50.0 No 2023 Erosion of naturally occurring deposits.
Sodium mg/L 106 8 64.2 NE NE No 2023 Erosion of naturally occurring deposits and
runoff from road deicing.
Sulfate mg/L 138 13.5 95.5 1000 NE No 2023 Erosion of naturally occurring deposits.
Thallium ug/L 0.0002 ND 0.00001 2.0 0.5 No 2023
Leaching from ore- processing sites and
discharge from electronics, glass and drug
factories.
Total
Dissolved solids mg/L 652 28 433 2000 NE No 2023 Erosion of naturally occurring deposits.
Turbidity
(Ground Water)NTU 0.59 0.01 0.3 5.0 NE No 2023 MCL is 5.0 for groundwater.
Suspended material from soil runoff.
Turbidity
(Surface Water)NTU 0.8357 0.011 0.03 0.3 TT No 2023 MCL is 0.3 NTU 95% of the time for surface
water. Suspended material from soil runoff.
NTU - Nephelometric Turbidity Units: Turbidity is measured
with an instrument called a nephelometer. Measurements are
given in nephelometric turbidity units. Turbidity is the measure
of cloudiness of the water and has no health effects
MCL - Maximum Contaminant Level: This is the highest level
allowed of a pollutant in drinking water. MCLs are set as close
as possible to the goal using the best available technology.
MCLG - Maximum Contaminant Level Goal: The goal level of
a pollutant in drinking water. Below this amount, there is no
known or expected health effect.
mg/L - Milligrams per liter
ug/L - Micrograms per liter
mg/L - Number of milligrams in one liter of water ug/L
NE – Not Established.
PG 10
RUSHTON WATER TREATMENT PLANT PROJECT
In 2018, GHID embarked on a multi-year study to improve the quality of our drinking water. An outside
consultant developed several recommendations on how to improve the quality of GHID’s groundwater
sources, including constructing facilities to remove naturally occurring minerals that cause aesthetic water
quality complaints. In 2023, the first of GHID’s treatment plants was completed and commissioned. The
new Rushton Groundwater Treatment Plant removes iron, manganese, and ammonia that naturally occurs
in the aquifer below West Valley City from three wells near the Jordan River. In 2023, GHID received grants
totaling $7.5M to construct the second water treatment plant to treat two additional wells. The new An-
derson Groundwater Treatment Plant will be designed similarly to the first and remove the same naturally
occurring minerals.
These projects allow Granger-Hunter to maintain a drought-resilient high-quality source of water not
dependent on reservoir storage and snowfall. In an extreme drought, GHID could supply approximately
half its water from these wells, significantly reducing reliance on imported water from mountain sources.
Please visit ghid.org/future-water-quality-improvements for additional information.
PG 10
PG 11
Your input is important to us!
You are welcome to attend our Board meetings or visit our
website for more details on ghid.org.
Social Media
One way to stay connected with us is by following us on
Instagram or Facebook . Here you’ll find the latest news about
big projects we’re working on, fun lessons for students or
opportunities to get involved with water in our community. We
also offer helpful tips on conservation, landscaping, and how
to protect your pipes.
Projects and Rates
Infrastructure projects and our rates go hand in hand.
We can’t keep the system in top shape without your help, so
we want you to be as informed as possible about what we
need and why. Check out our website at www.ghid.org to
learn about projects and ways you can have input into them.
Parameter Units 2023
Maximum
2023
Minimum
2023
Average
MONITORING CRITERIA Last
Sampled Comments/Likely Source(s)
MCL MCLG Violation
Secondary Inorganics – Aesthetic Standards
Aluminum ug/L 50.0 ND 2.8 SS =
50-200 NE No 2023 Erosion of naturally occurring deposits
and treatment residuals.
Chloride mg/L 161.0 10.0 44.9 SS =
250 NE No 2023 Erosion of naturally occurring deposits.
Color CU 10.0 0.1 4.2 SS = 15 NE No 2022 Decaying naturally occurring organic
material and suspended particles.
Iron ug/L 313.0 ND 2.132 SS =
300 NE No 2023 Erosion of naturally occurring deposits.
Manganese ug/L 34.0 ND 3.72 SS = 50 NE No 2023 Erosion of naturally occurring deposits.
Odor ug/L ND ND ND SS = 3 NE No 2022 Various sources.
pH 8.8 6.8 7.7 SS =
6.5-8.5 NE No 2023 Naturally occurring and effected by
chemical treatment.
Silver Ug/L ND ND ND SS = 100 NE No 2023 Erosion of naturally occurring deposits.
Zinc Ug/L 1.3 ND 0.06 SS =
5000 NE No 2023 Erosion of naturally occurring deposits.
Secondary Inorganics - Aesthetic Standards
STAY INFORMED ABOUT YOUR WATER
PG 12
Disinfection by-products (Trihalomethane (THM) or Haloacetic Acids (HAA))
Four times per year we look for byproducts of the disinfection process. When chlorine and sodium
hypochlorite, the disinfectant we use to protect the water against bacteria and viruses, starts to break down
in the water, it can form new compounds. These compounds, trihalomethanes (THM) and haloacetic acid
(HAA) have been known to cause cancer at high levels. We test for these compounds at eight different
locations in the water system.
What are VOCs? VOCs are a significant source of pollution in the environment, sometimes found in the
groundwater beneath certain industrial businesses such as dry cleaners and gas stations.
Parameter Units 2023
Maximum
2023
Minimum
2023
Average
MONITORING
CRITERIA Last
Sampled Comments/Likely Source(s)
MCL MCLG Violation
DISINFECTANTS/DISINFECTION BY-PRODUCTS
Chlorine mg/L 1.5 0.01 0.4 4.0 NE No 2023 Drinking water disinfectant.
TTHMs ug/L 66.3 ND 43.04 80.0 NE No 2023 By-product of drinking water disinfection.
HAA5s ug/L 65.1 ND 16.0 60.0 NE No 2023
High result is not a violation, violation is
determined on annual location average.
By-product of drinking water disinfection.
HAA6 ug/L 70.9 32.3 53.0 UR NE No 2023 By-product of drinking water disinfection.
Highest Annual
Location Wide Avg.ug/L TTHM = 48.97 ug/L, HAA5s = 28.4 ug/L
Bromate ug/L ND ND ND 10.0 NE No 2023 By-product of drinking water disinfection.
Chlorine Dioxide ug/L 0.04 ND 0.003 800 NE No 2023 Drinking water disinfectant.
Chlorite mg/L 0.6 0.1 0.4 1.00 0.80 No 2023 By-product of drinking water disinfection.
Parameter Units 2023
Maximum
2023
Minimum
2023
Average
MONITORING CRITERIA Last
Sampled
Comments/Likely
Source(s)MCL MCLG Violation
VOCs (Volatile Organic Compounds)
Chloroform ug/L 27.87 ND 0.78 UR NE No 2023
By-product of drinking water
disinfection.
Dibromochloromethane ug/L 5.13 ND 0.09 UR NE No 2023
Bromodichloromethane ug/L 6.80 ND 0.22 UR NE No 2023
Bromoform ug/L ND ND ND UR NE No 2023
All Other Parameters ug/L 31.27 ND 1.01 Various Various No 2023 Various sources.
Disinfection By-products
VOCs Volatile Organic Compounds
TTHMs - Total Trihalomethanes
THAAs - Total Haloacetic Acids
NE – Not Established
MCL - Maximum Contaminant Level: This is the highest level
allowed for a pollutant in drinking water. MCLs are set as close as
possible to the goal using the best available technology.
PG 13
Many of the contaminants found in public drinking water sources occur naturally. For example, radioactive
radium and uranium are found in small amounts in almost all rock and soil and can dissolve in water. Ra-
don, a radioactive gas, created through the decay of radium, can also naturally occur in groundwater.
Parameter Units 2023
Maximum
2023
Minimum
2023
Average
MONITORING CRITERIA Last
Sampled
Comments/Likely
Source(s)MCL MCLG Violation
VOCs (Volatile Organic Compounds)
Radium 226 pCi/L 1.3 -0.5 0.2 NE NE No 2023 Decay of natural and man-
made deposits.
Radium 228 pCi/L 1.3 -0.3 0.4 NE NE No 2023 Decay of natural and man-
made deposits.
Gross-Alpha pCi/L 7.2 0.5 2.2 15.0 NE No 2023 Decay of natural and man-
made deposits.
Gross-Beta pCi/L 11.0 0.9 3.9 50.0 NE No 2023 Decay of natural and man-
made deposits.
Uranium ug/L 7.5 0.0 3.5 30.0 NE No 2023 Decay of natural and man-
made deposits.
Radon pCi/L ND ND ND NE NE No 2020 Naturally occurring in soil.
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 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.
MRDLG Maximum Residual Disinfectant Level Goal: This is the lowest amount of cleaning chemical drinking water should have because it is the lowest amount
needed to make sure bacteria and viruses can’t live.
MRDL Maximum Residual Disinfectant Level: The highest level of disinfectant allowed in drinking water. There is convincing evidence that the addition of a
disinfectant is necessary for control of microbial contaminants.
NR Monitoring is not required but recommended
NTU Nephelometric Turbidity Units: Turbidity is measured with an instrument called a nephelometer. Measurements are given in nephelometric turbidity
units.
PPM Part Per Million= 1 drop of water in a hot tub
PPB Part Per Billion = 1 drop of water in an Olympic size swimming pool
PPT Part Per Trillion (ppt) = 1 drop of water in a lake that’s 6 square acres
Radiological
Definitions
pCi/L - Picocuries per liter (a measure of radioactivity)
NE – Not Established
ND – Not Detected
PG 13
PG 14
Not All Substances in the Water Have Official Health Limits.
The law doesn’t specify a limit for every potential substance that could be found in the water, so the
Environmental Protection Agency (EPA) is constantly studying new potential pollutants (they call them
unregulated contaminants) to determine what their effects are on our health, and at what levels, to
determine where to set limits for them.
Forever chemicals, Per- and Polyfluoroalkyl Substances (PFAS) Are a
Group of Manufactured Chemicals
PFAS are a group of manufactured chemicals that have been used in industry and consumer products
since the 1940s because of their useful properties. There are thousands of different PFAS, some of which
have been more widely used and studied than others. One common characteristic of concern of PFAS is
that many break down very slowly and can build up in people, animals, and the environment over time.
In 2019, the Department of Environmental Quality (DEQ) assembled a workgroup to develop a monitoring
reconnaissance plan for PFAS in the State of Utah. This workgroup developed an ongoing monitoring and
reporting strategy to determine if PFAS contaminants can be found in Utah’s groundwater, surface water,
or drinking water. This monitoring effort will help identify point source discharges of PFAS substances, so
they can be addressed.
April 10th the EPA approved National Primary Drinking Water Regulation (NPDWR) to establish legally
enforceable levels, called Maximum Contaminant Levels (MCLs), for six PFAS in drinking water. EPA is also
proposing health-based, non-enforceable Maximum Contaminant Level Goals (MCLGs) for these six PFAS.
We proactively seek out and rigorously monitor for unregulated contaminants to stay ahead of potential
health risks, such as participating in the Division of Environmental Quality’s 2019 PFAS Reconnaissance
Plan, and the Unregulated Contaminant Monitoring Rule 5 (UCMR5). During both investigational studies,
Granger-Hunter Improvement District sources were found to be below the MRL for Per- and polyfluoroalkyl
substances (PFAS).
Compound Units Maximum Minimum
MONITORING CRITERIA
Last Sampled
MCL MCLG Violation
PFOA ug/L <0.0037 <0.0037 4.0 ppt 0 No 2023
PFOS ug/L <0.0037 <0.0037 4.0 ppt 0 No 2023
PFNA ug/L <0.0037 <0.0037 10 ppt 10 ppt No 2023
PFHxS ug/L 10 ppt 10 ppt No 2023
HFPO-DA (GenX chemicals)ug/L <0.0047 <0.0047 10 ppt 10 ppt No 2023
Mixture of two or more: PFNA, PFHxS,
HFPO-DA, and PFBS ug/L Hard Index of 1 Hard Index of 1 No 2023
Maximum Contaminant Level Goal (MCLG): The
level of contaminant in drinking water which there
is no known or expected risk to health. MCLGs
allow for a margin of safety and enforceable public
health goals.
Maximum Contaminant Level (MCL): The
highest level of a contaminant that is allowed in
drinking water. MCLs are set as close to MCLGs
as feasible using best available treatment technol-
ogy and taking cost into consideration. MCLs are
enforceable standards
ppt: parts per trillion
PG 14
PFAS
Hard Index (HI): The Hazard Index is a long-established approach that
EPA regularly uses to understand health risks from chemical a mixture
(i.e., exposure to multiple chemicals). The HI is made up of a sum of
fractions. Each fraction compares the level of each PFAS measured in
the water to the health-based water concentration.
We proactively seek out and rigorously monitor for unregulated con-
taminants to stay ahead of potential health risks, such as participating
in the Division of Environmental Quality’s 2020 PFAS Reconnaissance
Plan, and the Unregulated Contaminant Monitoring Rule 5 (UCMR5).
During both investigational studies, Granger-Hunter Improvement
District sources were found to be below the MRL for Per- and polyfluo-
roalkyl substances (PFAS).
PG 15
Look Out for Special Populations
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 at 800-426-4791.
Radon
Radon is a naturally occurring gas present in some groundwater. Radon may pose a risk to your health if
you inhale it once it is released from water into the air. This could occur during showering, bathing, washing
dishes, or washing clothes. The radon gas released from drinking water is a relatively small part of the
total radon naturally found in the air. One major source of radon gas is from the soil, where the gas can
seep through the foundations of homes. It is not clear whether ingested (i.e., taken through the mouth)
radon contributes to cancer or other adverse health conditions. If you are concerned about radon in your
home, tests are available to determine the total exposure level. For additional information on home testing,
contact Salt Lake County Health Department.
Lithium is a natural metal that can be found more in certain places, especially in the groundwater of dry
areas in the Western U.S. People have been using lithium in medicines for a long time to help with certain
health issues. Even though we know a lot about using lithium in medicine, there’s not much information
about the health risks for people who get small amounts of lithium from drinking water, which is way less
than what’s used in medicine. Right now, the Environmental Protection Agency (EPA) is not sure about the
risks for people who have low levels of lithium in their drinking water. Scientists are still learning about how
lithium affects our health and at what levels it might be a concern.
Parameter Units 2023
Maximum
2023
Minimum
2023
Average
MONITORING CRITERIA Last
SampledMCLMCLGViolation
Unregulated Parameters
Lithium, Total ug/L 26.6 ND 15.65 UR NE No 2023
UCMR5 Lithium
PG 16
Additional Resources
Information on lead in drinking water: www.epa.gov/safewater/lead
Requirements of the Water Quality Report
http://www.epa.gov/sites/default/files/201405/documents/guide_qrg_ccr_2011.pdf
The Safe Drinking Water Act: www.epa.gov/sdwa
American Water Works Association: http://www.awwa.org
Water Environment Federation: http://www.wef.org
Groundwater Information: https://waterdata.usgs.gov/nwis and
http://www.epa.gov/ground- water-and-drinking-water/
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