DDW-2024-009604

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Annual Drinking Water Quality Report
The Water We Drink
Ashley Valley Water and Sewer Improvement District

We're pleased to present to you this year's Annual 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 source is Ashley Springs. The spring receives its water from the Dry Fork Creek, which
sinks into a limestone formation and resurfaces in the Ashley Spring. Additionally, the district owns water rights
in the Red Fleet Reservoir, and that water can be treated via the Central Utah Water Conservancy District’s water
treatment plant.

I'm pleased to report that our drinking water meets or exceeds federal and state requirements.

If you have any questions about this report or questions concerning your water utility, please contact Ryan
Goodrich at 435-789-9400. 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 board meetings. They are held on the third Tuesday
of each month at 12:00 noon at the district office.

Ashley Valley Water and Sewer Improvement District 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, 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.

Ashley Valley Water and Sewer Improvement District has a Drinking Water Source Protection Plan that
is available for review. It provides more information such as potential sources of contamination and our
source protection areas. It has been determined we have a low susceptible level to potential sources of
contamination, such as septic tanks, roads, homes, etc. If you have any questions regarding source
protection, contact the office to review our source protection plan. Our source is in a remote location, and
there are few potential contamination sources in the protection zones, so we consider our source to have a
low susceptibility to potential contamination events. We have also developed management strategies to
further protect our sources from contamination.

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.

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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.
Picocuries per liter (pCi/L) - picocuries per liter is a measure of the radioactivity in water.
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.
Maximum Contaminant Level (MCL) - (mandatory language) 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) - (mandatory language) 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.
Date- Because of required sampling time frames i.e. yearly, 3 years, 4 years and 6 years, 9 years, sampling
dates “may” seem out of date.
Waivers- 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
Contaminant Violation
Y/N
Level
Detected
ND/Low
High
Unit
Measurement MCLG MCL Date
Sampled
Likely Source of
Contamination
MICROBIOLOGIAL CONTAMINANTS
Total Coliform
Bacteria No 0 CFU 0
Presence of
Coliform
bacteria in
5% of
monthly
samples
2023 Naturally present
in the environment
Turbidity for
Surface Water No
0.002
Min
0.19
Max
NTU N/A
0.3 in at
least 95%
of the
samples
and must
never
exceed 1.0
2023
Soil Runoff (highest
single measurement &
the Lowest Monthly
percentage of samples
meeting the turbidity
limits)
RADIOACTIVE CONTAMINANTS
Alpha Emitters No 0.8 pCi/L 0 15 2020 Erosion of natural
deposits
Beta Emitters No 0.2 pCi/L 0 50 2020 Decay of natural and
man-made deposits
Radium 228 No 0.35 pCi/L 0 5 2020 Erosion of natural
deposits

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Inorganic Contaminants
Barium No .102 mg/L 2 2 2022
Discharge of drilling
wastes; discharge from
metal refineries;
erosion of natural
deposits
Copper
a. 90% results b.# of
sites that exceed the
AL
No
0/0.267 ppb 1300 AL=1300 2023
Corrosion of
household plumbing
systems, erosion of
natural deposits,
leaching from wood
preservatives
Lead No 0
/0.0071 ppb 0 15 2023
Corrosion of
household plumbing
systems, erosion of
natural deposits
Sodium No 1.1 ppm 2000 2000 2019 Erosion of natural
deposits
Nitrate
(as Nitrogen) No
.11 ppm 10 10 2023
Runoff from fertilizer
use; leaching for septic
tank, sewage: erosion
of natural deposits
Sulfate No
2.8 mg/L 250 250 2022
Erosion of natural
deposits; discharge
from refineries and
factories; runoff from
landfills, run off from
cropland
Selenium No ND ppt 50000 50000 2022 Erosion of natural
deposits
VOLATILE ORGANIC CONTAMINANTS
TTHM (Total
trihalomethanes) No
15.96
Qrtly
Average
ppb 0 80 2023 By-product of drinking
water chlorination
Haloacetic Acid
(HAA5) No
13.13
Qrtly
Average
ppb 0 60 2023 By-product of drinking
water chlorination
Total Organic
Carbon No
1.625
Raw
Average

1.408 Fin.
Average
ppm 0 N / A 2023 Naturally occurring
plant matter

The following constituents are regulated more closely, Arsenic, Lead, Nitrate, Radon and Cryptosporidium.
Notice of any detection is required.

In addition to the sampling outlined in the table above, we have also sampled for (21 Volatile Organic
Chemicals, 28 Pesticides, 35 Unregulated Organic Chemicals and 10 Unregulated Pesticides). These

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additional chemicals were not detected. Our system has been granted use waivers for these chemicals.

As you can see by the table, our system had no water quality violations. We’re proud that your drinking water
meets or exceeds all Federal and State requirements. We have learned through our monitoring and testing that
some constituents have been detected. The EPA has determined that your water IS SAFE at these levels.

All sources of drinking water are subject to potential contamination by constituents that are naturally occurring
or are 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.

MCL’s 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.

In our continuing efforts to maintain a safe and dependable water supply it may be necessary to make
improvements in your water system. The costs of these improvements may be reflected in the rate structure.
Rate adjustments may be necessary to address these improvements.

Thank you for allowing us to continue providing your family with clean, quality water this year. In order to
maintain a safe and dependable water supply we sometimes need to make improvements that will benefit all of
our customers. These improvements are sometimes reflected as rate structure adjustments. Thank you for
understanding.

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 microbiological contaminants are available from the Safe Drinking Water Hotline [phone]).

Please call our office if you have questions. Call 435-789-9400 ask for Ryan Goodrich or Chris Allen. Ashley
Valley Water and Sewer operators 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.