DDW-2025-004377

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Annual Drinking Water Quality Report
Lewiston City
2024
We're 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 sources. Our water sources are
Griffin well and Hy Bair spring and the Sports Complex production well .

The Drinking Water Source Protection Plan for Lewiston City is available for your review. It
contains information about source protection zones, potential contamination sources and
management strategies to protect our drinking water. Our sources are located in remote and
protected areas and have a low level of susceptibility to potential contamination sources. 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.
There are many connections to our water distribution system. When connections are properly
installed and maintained, the concerns are very minimal. However, unapproved and improper
piping changes or connections can adversely affect not only the availability, but also the quality
of the water. A cross connection may let polluted water or even chemicals to mingle into the
water supply system when not properly protected. This not only compromises the water quality
but can also affect your health. So, what can you do? Do not make or allow improper
connections at your homes. Even that unprotected garden hose lying in the puddle next to the
driveway is a cross connection. The unprotected lawn sprinkler system after you have fertilized
or sprayed is also a cross connection. When the cross connection is allowed to exist at your
home, it will affect you and your family first. If you’d like to learn more about helping to protect
the quality of our water, call us for further information about ways you can help.
This report shows our water quality and what it means to you, our customer.
If you have any questions about this report or concerning your water utility, please contact Paul
Swainston at 435-258-2141. We want our valued customers to be informed about their water
utility. If you want to learn more, please attend any of our regularly scheduled meetings. They
are held on the third Thursday at 7:30 at 29 South Main.
Lewiston City routinely monitors for 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, 2024. 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.
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In the following table you will find many terms and abbreviations you might not be familiar
with. To help you better understand these terms we've provided the following definitions:
Non-Detects (ND) - laboratory analysis indicates that the constituent is not present.
ND/Low - High - For water systems that have multiple sources of water, the Utah Division of Drinking Water has given water
systems the option of listing the test results of the constituents in one table, instead of multiple tables. To accomplish this, the
lowest and highest values detected in the multiple sources are recorded in the same space in the report table.
Parts per million (ppm) or Milligrams per liter (mg/l) - one part per million corresponds to one minute in two years or a single
penny in $10,000.
Parts per billion (ppb) or Micrograms per liter (ug/l) - one part per billion corresponds to one minute in 2,000 years, or a single
penny in $10,000,000.
Parts per trillion (ppt) or Nanograms per liter (nanograms/l) - one part per trillion corresponds to one minute in 2,000,000
years, or a single penny in $10,000,000,000.
Parts per quadrillion (ppq) or Picograms per liter (picograms/l) - one part per quadrillion corresponds to one minute in
2,000,000,000 years or one penny in $10,000,000,000,000.
Picocuries per liter (pCi/L) - picocuries per liter is a measure of the radioactivity in water.
Millirems per year (mrem/yr) - measure of radiation absorbed by the body.
Million Fibers per Liter (MFL) - million fibers per liter is a measure of the presence of asbestos fibers that are longer than 10
micrometers.

Nephelometric Turbidity Unit (NTU) - nephelometric turbidity unit is a measure of the clarity of water. Turbidity in excess of 5
NTU is just noticeable to the average person.
Action Level (AL) - the concentration of a contaminant which, if exceeded, triggers treatment or other requirements which a
water system must follow.
Treatment Technique (TT) - A treatment technique is a required process intended to reduce the level of a contaminant in
drinking water.
Maximum Contaminant Level (MCL) - The “Maximum Allowed” (MCL) is 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.
Maximum Contaminant Level Goal (MCLG) - The “Goal”(MCLG) is 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 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. MRDLGs do not reflect the benefits of the use of disinfectants to control microbial
contaminants.
Date- Because of required sampling time frames i.e. yearly, 3 years, 4 years and 6 years, sampling dates may seem outdated.
Waivers (W)- Because some chemicals are not used or stored in areas around drinking water sources, some water systems have
been given waivers that exempt them from having to take certain chemical samples, these waivers are also tied to Drinking Water
Source Protection Plans.

TEST RESULTS
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Contaminant Violation
Y/N
Level
Detected
ND/Low-
High
Unit
Measurement
MCLG MCL Date
Sampled
Likely Source of Contamination
Microbiological Contaminants
Total Coliform Bacteria N ND N/A 0 Presence of coliform
bacteria in 5% of
monthly samples
2024 Naturally present in the
environment
Fecal coliform and
E.coli
N ND N/A 0 If a routine sample
and repeat sample
are total coliform
positive, and one is
also fecal coliform
or E. coli positive
2024 Human and animal fecal waste
Turbidity
for Ground Water
N 0.15 NTU N/A 3 2022 Soil runoff
Inorganic Contaminants
Arsenic N ND-3 ppb 0 10 2019 Erosion of natural deposits;
runoff from orchards; runoff
from glass and electronics
production wastes
Barium N .52 ppm 2000 2000 2022 Discharge of drilling wastes;
discharge from metal refineries;
erosion of natural deposits
Carbon, Total Organic (TOC) N ND ppm NA TT 2016 Naturally present in the
environment
Copper
a.90% results
b.# of sites that exceed
the AL
N a. .177
b.0
ppm 1300 AL=1300 2023 Corrosion of household
plumbing systems; erosion of
natural deposits
Fluoride N ND-0.2 ppb 4000 4000 2019 Erosion of natural deposits;
water additive which promotes
strong teeth; discharge from
fertilizer and aluminum factories
Lead
a.90% results
b.# of sites that exceed
the AL
N a. 1.2
b.0
ppb 15 AL=15 2023 Corrosion of household
plumbing systems, erosion of
natural deposits
Nitrate (as Nitrogen)N 0-2.669 ppm 10 10 2024 Runoff from fertilizer use;
leaching from septic tanks,
sewage; erosion of natural
deposits
Sodium N 5.11 ppm 500 None set by EPA 2022 Erosion of natural deposits;
discharge from refineries and
factories; runoff from landfills.
Sulfate N 5.54 ppm 1000 1000 2022 Erosion of natural deposits;
discharge from refineries and
factories; runoff from landfills,
runoff from cropland
TDS (Total Dissolved solids)N 352 ppm 2000 2000 2022 Erosion of natural deposits
Radioactive Contaminants
Alpha emitters N 1.99 pCi/1 0 15 2024 Erosion of natural deposits
Radium 228 N .617 pCi/1 0 5 2024 Erosion of natural deposits

Nitrate in drinking water at levels above 10 ppm is a health risk for infants of less than six
months of age. High nitrate levels in drinking water can cause blue baby syndrome. Nitrate
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levels may rise quickly for short periods of time because of rainfall or agricultural activity. If you
are caring for an infant you should ask advice from your health care provider.
In accordance with Lead and Copper Rule Revision, Lewiston’s water system has completed the
initial survey of service connections on our water system. We are happy to report that after
inspecting all meter barrels, no lead service connections were found.

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. Lewiston City 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.
All sources of drinking water are subject to potential contamination by constituents that are
naturally occurring or manmade. Those constituents can be microbes, organic or inorganic
chemicals, or radioactive materials. All 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 the water poses a health risk. More information
about contaminants and potential health effects can be obtained by calling the Environmental
Protection Agency’s Safe Drinking Water Hotline at 1-800-426-4791.
MCLs are set at very stringent levels. To understand the possible health effects described for
many regulated constituents, a person would have to drink 2 liters of water every day at the MCL
level for a lifetime to have a one-in-a-million chance of having the described health effect.
Some people may be more vulnerable to contaminants in drinking water than the general
population. Immunocompromised 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 from their health care providers about drinking water.
EPA/CDC guidelines on appropriate means to lessen the risk of infection by cryptosporidium
and other microbiological contaminants are available from the Safe Drinking Water Hotline
(800-426-4791).
We at Lewiston City 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 community,
our way of life and our children’s future.
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May 1, 2025
Brandi Smith
CCR Compliance
Division of Drinking Water
P.O. Box 144830
Salt Lake City, Utah 84114-4830
Dear Ms. Smith:
Subject: Consumer Confidence Report for Lewiston City 03009
Enclosed is a copy of Lewiston City Consumer Confidence Report. It contains the water
quality information for our water system for the calendar year 2024 or the most recent
sample data.
We have delivered this report to our customers by:
Direct mailing to all customers 4/15/2025
Copies of the report in the office 4/15/2025
Published on our web site https://lewistonutah.gov/
If you have any questions, please contact me, Paul Swainston at 435-770-4337
Sincerely,
Paul Swainston
Lewiston City