DDW-2024-009756

We are pleased to present to you the previous year's 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.

Note for Kayenta residents: The west side Kayenta neighborhood, mostly west of the Dry Wash, is served
by KWU, a private water system. This water quality report does not include the water delivered to KWU which
uses a different water source. You should receive a separate report from KWU. If you are unsure whether you
are on the KWU system or not, please call Ivins City Public Works 634-0689 or go to www.ivins.com/culinary-
water-system/

Ivins City Water Sources:
• Gunlock Wells Arsenic Removal Plant: Ivins City purchases this groundwater from the City of St.
George, who owns and operates several wells near Gunlock Reservoir. The groundwater is then
treated by the plant to lower arsenic levels.
• Quail Creek Water Treatment Plant (Regional): Ivins City purchases this treated surface water
from the Washington County Water Conservancy District (WCWCD). This water that has been
drawn from the Virgin River and then held in either the Sand Hollow Reservoir or Quail Creek
Reservoir prior to being treated at the plant. The plant removes suspended particles using
absorption with activated carbon and sand filtration. The water is sent to Ivins City through the
Regional Water System transmission pipeline network.
• Sand Hollow Wells (Regional): Ivins City purchases this groundwater from the Washington County
Water Conservancy District, who owns and operates several wells near Sand Hollow Reservoir.
This water is run through an arsenic removal treatment plant and then mixed with water from the
Quail Creek Water Treatment Plant before being sent to Ivins City.
• Snow Canyon Wells: Ivins City jointly owns several wells in Snow Canyon with the cities of St
George and Santa Clara, which provides this important groundwater source to our city along with
our partners. Usually, this water is mixed with water from Quail Creek/Sand Hollow to reduce
arsenic levels.

As this water has either traveled over the surface of land or through the ground, it absorbs dissolved
naturally occurring minerals, and in some cases, radioactive material, and can also absorb substances
resulting from the presence of animals or from human activity. 15 to 25% of the City’s water is from
the Gunlock Wells, 60 to 75% is from the regional pipeline (Quail Creek/Sand Hollow Wells), and 10
to 15% is from the Snow Canyon Wells.

General Information:
Ivins City and our suppliers routinely monitor for contaminants in our drinking water in accordance with
Federal and State laws. All drinking water, including bottled drinking water, may be reasonably
expected to contain at least small amounts of some contaminants. All sources of drinking water
are subject to potential contamination by contaminants that are naturally occurring or manmade.
Those contaminants can be microbes, organic or inorganic chemicals, or radioactive materials. 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 Environmental
Protection Agency’s Safe Drinking Water Hotline at 1-800-426-4791 or by going to:
https://www.epa.gov/ground-water-and-drinking-water

Maximum Contaminant Levels or MCL’s are set with conservative stringent standards. To understand the
possible health effects described for many regulated contaminants, a person would drink two liters of
water every day at the MCL for a lifetime for a one-in-a-million chance of having the described health
effect.
Ivins City 2023 Water Quality Report
Important Information Regarding your Drinking Water
Ivins City 2023 Water Quality Report Page 2 of 5

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 at 1-800-426-4791.

Cross Connection Risk:
Ivins City is doing all it can to keep the water
system as safe as possible, but we need your help.
There are many connections to our water
distribution system. When connections are properly
installed and maintained, concerns are very
minimal. However, unapproved and improper
piping changes or connections can adversely affect
the quality and availability of our water. A cross
connection may let polluted water or even
potentially harmful 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 home.

There are rare times, perhaps if there is a main
break, when the water system loses pressure and
could turn into a vacuum and start sucking air. It is
important to make sure that all openings in the
water system are exposed to air only. Even the
unprotected garden hose lying in the puddle next to the driveway could cause a contamination event. The
unprotected lawn sprinkler system after you have fertilized or sprayed is also a cross connection. Since you
can’t guarantee that the lawn sprinklers will only suck air, the irrigation must be connected with a backflow
prevention device.

When a cross connection is allowed to exist at your home it will affect you and your family first. If you suspect
you have a cross-connection or you would like to learn more about helping to protect the quality of our water,
call us for further information about ways you can help.

Definitions:

Action Level (AL) - the concentration of a contaminant that, if exceeded, triggers treatment or other
requirements that a water system must follow.
Maximum Contaminant Level (MCL) - The “Maximum Allowed” (MCL) is the highest level of a contaminant that is
allowed in drinking water. MCL’s are set as close to the MCLG’s 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. MCLG’s allow for a margin of safety.
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.
Non-Detects (ND) - laboratory analysis indicates that the contaminant 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 contaminants 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.
Ivins City 2023 Water Quality Report Page 3 of 5

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.
Picocuries per liter (pCi/L) - picocuries per liter is a measure of the radioactivity in water.
Running Annual Average (RAA) - Highest running annual average of four consecutive quarters when sampling
occurs.
Treatment Technique (TT) - A treatment technique is a required process intended to reduce the level of a
contaminant in drinking water.
All contaminants analyzed were below the limits established by the State of Utah and Federal
Safe Drinking Water Acts.
Arsenic: Your drinking water meets EPA’s standard for arsenic, but it does contain low levels of arsenic. EPA’s
standard balances the current understanding of arsenic’s possible health effects against the costs of removing
arsenic from drinking water. EPA continues to research the health effects of low levels of arsenic which is a
mineral known to cause cancer in humans at high concentrations and is linked to other health effects such as skin
damage and circulatory problems.

Lead: 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. Ivins 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 www.epa.gov/safewater/lead

Water Hardness: Due to the heavy influence from groundwater, Ivins City water supply is usually high
in water hardness. Many customers use treatment devices, such as water softeners, to remove minerals
like calcium and magnesium that cause water hardness. Many customers with water softeners may find
that a setting of 22 grains of hardness per gallon provides the most effective treatment.

Ivins City personnel work very hard to provide quality water to every residence and we closely
monitor it to ensure it. We ask that all our customers help us protect and conserve our water sources,
which are the heart of our community. If you have any questions about this report or concerning your
water utility, please contact us at 435-634-0689 or send an email [e-mail]. We want
our valued customers to be informed about their water utility.

Please feel free to visit our website at www.ivins.com or attend any of our regularly scheduled City
Council meetings that are held on the first and third Thursday of every month beginning at 5:30 pm.

We are pleased to report that your drinking water was analyzed, and all contaminants were
measured below the limits established by the Utah Safe Drinking Water Act and the Federal Safe
Drinking Water Act.

Sincerely,

Charles R. Gillette, P.E.
Public Works Director/City Engineer
June 2024

Ivins City 2023 Water Quality Report Page 4 of 5

WATER ANALYSIS FOR YEAR 2023
(EPA Requires monitoring of over 80 drinking water contaminants. The contaminants listed in this table are the only contaminants
detected in your drinking water.)
Contaminant Violation
Level
Detected
ND/Low-High

Unit
Measure-
ment MCLG MCL Last
Sample
Date
Likely Source of
Contamination
Microbiological Contaminants (Sampled weekly by Ivins City)
Total Coliform
Bacteria NO 0 Positive of 144
Samples Taken Positive or
Negative 0 > 1 Positive
Per month 2023 Naturally present in the
environment
When there is a positive coliform bacteria sample, repeat samples are taken immediately at the same location and a location upstream and downstream as well as at
the groundwater sources to determine if additional action needs to be taken. If the results of these repeat samples are negative, no further action is required.
Fecal Coliform & E.
Coli NO 0 Positive of 144
Samples Taken Positive or
Negative 0
If routine & repeat samples
are total coliform positive
and one is also fecal
coliform or E. Coli positive
2022 Human and Animal Fecal
Waste
Radioactive Contaminants (Sampled at the source by City of St. George and WCWCD)
Gross Alpha including
Radon & Uranium NO 1 – 4 pCi/L 0 15 2022 Erosion of natural deposits
Beta Emitters NO 4 – 5 pCi/L 0 50 2022 Erosion of natural deposits
Combined Radium
226/228 NO 0.6 – 4.5 pCi/L 0 5 2022 Erosion of natural deposits
Inorganic Contaminants (Sampled at the water source by City of St. George and WCWCD)
Aluminum NO ND – 0.2 ppm NE NE 2022 Erosion of natural deposits
Antimony NO ND – 1.8 ppb 6 6 2023 Erosion of natural deposits
Arsenic NO 2.8 – 8.2 ppb RAA 0 10 2023 Erosion of natural deposits
Barium NO ND – 0.3 ppm 2 2 2023 Erosion of natural deposits
Calcium NO ND – 65 ppm NE NE 2022 Erosion of natural deposits
Fluoride NO 0.2 – 0.4 ppm 4 4 2023 Erosion of natural deposits
Magnesium NO ND – 38 ppm NE NE 2022 Erosion of natural deposits
Manganese NO ND - .003 ppm NE 0.05 2023 Erosion of natural deposits
Nitrate (as Nitrogen) NO ND – 3.0 ppm 10 10 2023
Runoff from fertilizer use;
leaching from septic tanks,
sewage; erosion of natural
deposits
Selenium NO 1.0 – 6 ppb 50 50 2023 Erosion of natural
deposits; discharge from
mines
Sodium NO 9 – 52 ppm 500 None 2023 Erosion of natural
deposits; runoff from
landfills
Sulfate NO 30 – 273 ppm NE 500 2023 Erosion of natural
deposits; runoff from
landfills and croplands
Total Dissolved
Solids NO 172 – 580 ppm N/A 1,000 2023 Erosion of natural deposits
Total Organic
Carbon NO ND – 2.7 ppm TT NE 2023 Naturally present in
environment
Turbidity. NO 0.1 – 0.3 NTU N/A 5 2023 Soil runoff
Lead and Copper (Sampled at 20 residences every 3 years by Ivins City, next samples will be taken in 2024)
Lead – 90th
percentile results NO 0.0021 ppm 0 AL = 0.015 2021 Corrosion of household plumbing;
erosion of natural deposits
Copper – 90th
percentile results NO 0.086 ppm 1.3 AL = 1.3 2021 Corrosion of household plumbing;
erosion of natural deposits
Disinfection Byproducts (Sampled quarterly by Ivins City)
Chlorine (as Cl2) NO 0.07 – 0.41 ppm 4.0 4.0 2023 Added for sanitization
Total HAA’s NO 0.0 – 3.2 ppb 0 60 2023 Disinfection byproduct
Total THM’s NO 3.9 – 36.6 ppb 0 80 2023 Disinfection byproduct

Ivins City 2023 Water Quality Report Page 5 of 5

Update on Water Conservation

You may have heard that Ivins City has received
awards for water conservation efforts. Back in
October, Mayor Hart was handed a water
conservation award by Governor Cox. This is after
receiving the same award five years previously in
2019. The State is recognizing huge achievements
of water conservation by Ivins City Residents.

This award was not given without merit. Since the
Year 2000, Ivins City residents have reduced water
usage by 44 percent on a per capita basis. Thank
you to everyone that has figured out ways to keep
our City looking beautiful with much less water.

The City recently passed a new water conservation plan with goals to improve conservation by an
additional 1% every year. Please help us by being deliberate and conscious with your water usage.

293 289 285 282
253
235
273 281
255 249
223 217 222 230 220 210 218 219 223
203 210
186 182
166
0
25
50
75
100
125
150
175
200
225
250
275
300
20
0
0
20
0
1
20
0
2
20
0
3
20
0
4
20
0
5
20
0
6
20
0
7
20
0
8
20
0
9
20
1
0
20
1
1
20
1
2
20
1
3
20
1
4
20
1
5
20
1
6
20
1
7
20
1
8
20
1
9
20
2
0
20
2
1
20
2
2
20
2
3
Total Usage Per Person
gal/cap/day
44% Reduction!
since 2000