DDW-2025-007556

DRINKING WATER QUALITY
2025 ANNUAL REPORT
UTAH PUBLIC WATER SYSTEM #27016
2
D R I N K I N G
SA
N
T
A

C
L
A
R
A

|

2
0
2
5

W
A
T
E
R

Q
U
A
L
I
T
Y

R
E
P
O
R
T

We are pleased to present you with 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. In addition
to our vested water rights, we purchase water from St. George City and the Washington County
Water Conservancy District. Sources include the Snow Canyon wells, Gunlock Wells, and the Quail
Creek Water Treatment Plant.
SOURCE PROTECTION PLAN
A Drinking Water Source Protection Plan was completed to identify any potential sources of
contamination to our water supply. It contains information about source protection zones,
potential contamination sources and management strategies to protect our drinking water. The
Plan determined that the City has a low susceptibility level to potential contamination because of
the remote location of our water sources. The Plan is available for review by our customers at the
Town Hall. Please do not hesitate to contact us if you have any questions or concerns about our
Source Protection Plan.
WHAT YOU CAN DO
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 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.
If you want to get involved in water resources, you can attend any of the regularly cheduled
meetings of the Washington County Water Conservancy District (WCWCD). Meetings are held at
533 East Waterworks Drive (just off East Red Hills Parkway) in St. George. The schedule is available
at:
https://www.wcwcd.org/about-us/management/board-of-trustees-meeting-schedule
or call [phone].
THE GOOD NEWS
We are pleased to report that our drinking water meets federal and state requirements. If you
have any questions about this report or concerning your water utility, please contact Jamie Mills
at 435-656-4690 Ext. 213. Santa Clara 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.
3
D R I N K I N G W A T E R Q U A L I T Y
SA
N
T
A

C
L
A
R
A

|

2
0
2
5

W
A
T
E
R

Q
U
A
L
I
T
Y

R
E
P
O
R
T
TERMS & ABBREVIATIONS
Maximum Contaminant Level (MCL)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) Level of a contaminant in drinking water below which there is no known or ex-pected risk to health. MCLGs allow for a margin of safety.
Nephelometric Turbidity Unit (NTU) 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 whicha water system must follow.
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 UT Division of Drink-ing Water has given water systems the option of listing the test results of the constituents in one table, instead of multiple tables. The lowest and highest values detected in the multiple sources are recorded in the same space in the report table.
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 con-taminants.
Maximum Residual Disinfectant Level Goal (MRDLG) The level of a drinking water disinfectant below which there is no known or ex-pected risk to health. MRDLGs do not reflect the benefits of the use of disin-fectants to control microbial contaminants.
Parts per million (ppm) or Milligrams per liter (mg/l)A unit that represents 1 part contaminant in 1,000,000 parts water. In water appli-cations, one part per million is also equivalent to 1 milligram per liter (mg/L).
Parts per billion (ppb) or Micrograms per liter (ug/l) 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) 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) Corresponds to one minute in 2,000,000,000 years or one penny in $10,000,000,000,000.
Picocuries per Liter (pCi/L) Measure of the radioactivity in water.
Waivers (W)Because some chemicals are not used or stored in areas around drinking water sources, some water sources have been given waivers that exempt them from having to take certain chemical samples.
Treatment Technique (TT) EPA requires process intended to reduce the level of a contaminant in drinking water.
DateBecause of required sampling time frames i.e. yearly, 3 years, 4 years and 6 years, sampling dates may seem out-dated. Million Fibers per Liter (MFL)Measure of the presence of asbestos fibers that are longer than 10 micrometers.
20
2
5

W
A
T
E
R

Q
U
A
L
I
T
Y

R
E
P
O
R
T

|

A
N
A
L
Y
S
I
S
Contaminant Violation Y/N
Level Detected Low-High
Unit of Measure MCLG MCL Date Sam-pled
Likely Source of Contamination
Likely Source
of Contamination
MICROBIOLOGICAL CONTAMINANTS MICROBIOLOGICAL CONTAMINANTS
Coliform Bacteria N ND NA 0
Presence of total coli-
form bacteria in 5% of
monthly samples
2024 Naturally present in the
environment.
*If the sulfate level of a public water system is greater than 500 ppm, the supplier must satisfactorily demonstrate
that a) no better water is available; and b) the water shall not be available for human consumption from commercial
establishments. In no case shall water having level above 1000 ppm be used.
E. Coli N ND NA 0
If routine & repeat
samples are total coli-
form positive, and one
is also E. Coli positive.
2024 Human and animal
fecal waste.Sulfate N 1.38 - 209 ppm 1000 1000 2024 Erosion of natural
deposits.
Turbidity N ND - 0.66 NUT N/A 5 2024 Soil runoff Sodium N 9.0 - 55.0 ppm None None 2024 Erosion of natural
deposits.
Total Disolved Solids (TDS) N 136 - 552 ppm 2000 2000 2024 Erosion of natural
deposits.
*If TDS is greater than 1000 ppm, the supplier shall demonstrate to the Utah Drinking Board that no better water is
available. The Board shall not allow the use of an inferior source of water if a better source is available.
RADIOACTIVE CONTAMINANTS LEAD AND COPPER - Sampled Residences throughout the distribution system
Alpha Emitters N -1.0 - 5.0 PCl/L 0 15 2023 Erosion of natural
deposits.
Lead
a. 90% results
b. # of sites that
exceed the AL
N

a. 0.06
b. ND
ppb 0 15 (AL) 2024
Corrosion of house-
hold plumbing
systems; Erosion of
natural deposits.
Combined Radium 226/228 N 0.6 - 1.6 PCl/L 0 5 2023 Erosion of natural
deposits.
Copper
a. 90% results
b. # of sites that
exceed the AL
N a. 0.053b. ND ppm 1.3 1.3 (AL) 2024
Erosion of natural deposits; Leaching from wood preserv-atives; Corrosion of household plumbing systems.
Radium 226 N 0.2 - 1.0 PCl/L 0 5 2022 Erosion of natural
deposits.
Radium 228 N 1 PCl/L 0 5 2022 Erosion of natural
deposits.
INORGANIC CONTAMINANTS DISINFECTION BYPRODUCTS
Antimony N ND - 1.0 ppb 6 6 2024 Erosion of natural
deposits.Haloacetic Acids N 3.46 - 6.848 ppb 0 60 2024 By-product of drink-ing water disinfec-tion.
Arsenic N
RAA = 8.68 Range = 1.0 - 13.0
ppb 0 10 2024
Erosion of natural
deposits; Runoff from
orchards; Runoff from
glass and electronics
production wastes.
Total Trihalomethanes (TTHM)N 26.52 - 33.94 ppb 0 80 2024 By-product of drinking water disinfection.
Barium N 0.08 -
0.287
ppm 2 2 2024 Erosion of natural
deposits. ORGANIC CARBON
Fluoride N 0.2 - 0.512 ppm 4 4 2024 Erosion of natural
deposits.Total Organic Carbon N NA - 2.2 ppm NA TT 2024 Naturally present in
the environment.
Nitrate N ND - 3.0

ppm

10 10 2024 Runoff from fertilizer use;
leaching from septic tanks;
sewage; erosion of natural
deposits.
Selenium N 1.0 - 4.0 ppb 50 50 2024 Erosion of natural
deposits.
20
2
5

W
A
T
E
R

Q
U
A
L
I
T
Y

R
E
P
O
R
T

|

A
N
A
L
Y
S
I
S
ContaminantViolation Y/N
Level Detected Low-High
Unit of MeasureMCLGMCLDate Sam-pled
Likely Source of Contamination Contaminant Violation Y/N
Level Detected Low-High
Unit of Measure MCLG MCL Date Sampled
Likely Source
of Contamination
MICROBIOLOGICAL CONTAMINANTS MICROBIOLOGICAL CONTAMINANTS
Coliform BacteriaNNDNA0
Presence of total coli-
form bacteria in 5% of
monthly samples
2024Naturally present in the
environment.
*If the sulfate level of a public water system is greater than 500 ppm, the supplier must satisfactorily demonstrate
that a) no better water is available; and b) the water shall not be available for human consumption from commercial
establishments. In no case shall water having level above 1000 ppm be used.
E. ColiNNDNA0
If routine & repeat
samples are total coli-
form positive, and one
is also E. Coli positive.
2024Human and animal
fecal waste.Sulfate N 1.38 - 209 ppm 1000 1000 2024 Erosion of natural
deposits.
TurbidityNND - 0.66NUTN/A52024Soil runoffSodium N 9.0 - 55.0 ppm None None 2024 Erosion of natural
deposits.
Total Disolved Solids (TDS) N 136 - 552 ppm 2000 2000 2024 Erosion of natural
deposits.
*If TDS is greater than 1000 ppm, the supplier shall demonstrate to the Utah Drinking Board that no better water is
available. The Board shall not allow the use of an inferior source of water if a better source is available.
RADIOACTIVE CONTAMINANTS LEAD AND COPPER - Sampled Residences throughout the distribution system
N-1.0 - 5.0PCl/L0152023Erosion of natural
deposits.
Lead
a. 90% results
b. # of sites that
exceed the AL
N

a. 0.06
b. ND
ppb 0 15 (AL) 2024
Corrosion of house-
hold plumbing
systems; Erosion of
natural deposits.
Combined Radium 226/228N0.6 - 1.6PCl/L052023Erosion of natural
deposits.
Copper
a. 90% results
b. # of sites that
exceed the AL
N a. 0.053b. ND ppm 1.3 1.3 (AL) 2024
Erosion of natural deposits; Leaching from wood preserv-atives; Corrosion of household plumbing systems.
Radium 226N0.2 - 1.0PCl/L052022Erosion of natural
deposits.
Radium 228N1PCl/L052022Erosion of natural
deposits.
INORGANIC CONTAMINANTS DISINFECTION BYPRODUCTS
AntimonyNND - 1.0ppb662024Erosion of natural
deposits.Haloacetic Acids N 3.46 - 6.848 ppb 0 60 2024 By-product of drink-ing water disinfec-tion.
ArsenicN
RAA = 8.68 Range = 1.0 - 13.0
ppb0102024
Erosion of natural
deposits; Runoff from
orchards; Runoff from
glass and electronics
production wastes.
Total Trihalomethanes (TTHM)N 26.52 - 33.94 ppb 0 80 2024 By-product of drinking water disinfection.
BariumN0.08 -
0.287
ppm222024Erosion of natural
deposits. ORGANIC CARBON
N0.2 - 0.512ppm442024Erosion of natural
deposits.Total Organic Carbon N NA - 2.2 ppm NA TT 2024 Naturally present in
the environment.
NitrateNND - 3.0

ppm

10102024Runoff from fertilizer use;
leaching from septic tanks;
sewage; erosion of natural
deposits.
SeleniumN1.0 - 4.0ppb50502024Erosion of natural
deposits.5
6
20
2
5

W
A
T
E
R

Q
U
A
L
I
T
Y

R
E
P
O
R
T

|

H
E
A
L
T
H

P
R
O
T
E
C
T
I
O
N
S A N T A C L A R A W A T E R D E P A R T M E N T
PRESENCE OF LEAD
If present, elevated levels of lead can cause serious health problems, especially for
pregant women and young children. Lead in drinking water is primarily from materials and
components associated with service lines and home plumbing. Santa Clara City is responsible for
providing high quality drinking water, but can not 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 flusihing 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
PRESENCE OF CONTAMINANTS
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 affects can be obtained by calling the Environmental
Protection Agency’s Safe Drinking Water Hotline at: [phone].

HEALTH RISKS & CONCERNS
MCLS are set at very stringent levels. To understand 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. Immuno-compromised persons such as persons with cancer undergoing
chemotherapy, person who have undergone organ transplants, people with HIV/AIDS or other
immune system disorder, some elderly, and infants can be particularly at risk from infections.
These people should seek advice from their healthcare 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: [phone].
OUR PLEDGE TO YOU
We at Santa Clara City work around the clock to provide top quality water to every tap. We
pledge to provide our community with high quality, safe and reliable drinking water year round.
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.
7
2
0
2
5

W
A
T
E
R

Q
U
A
L
I
T
Y

R
E
P
O
R
T

|

H
E
A
L
T
H

P
R
O
T
E
C
T
I
O
N

S A N T A C L A R A W A T E R D E P A R T M E N T Source Water Name Type of Water Source ID
UTAH27094 WCWCD -
QUAIL LAKE
SW WS007
SNOW CANYON WELL
#6
GW WS012
SNOW CANYON WELL #7 GW WS013
UTAH27015 ST
GEORGE
SW WS014
2603 Santa Clara Drive
Santa Clara, UT 84765
Monday - Thursday: 8 am - 5 pm
Friday: 8 am - 1 pm
Closed Saturday & Sunday
Jamie Mills | [e-mail]
Phone: [phone] Ext. 213
Fax: [phone]
https://santaclarautah.gov
S A N T A C L A R A C I T Y W A T E R