DDW-2024-009257

Rockville Pipeline Company
Rockville Pipeline Company March 25, 2024
P.O. Box. 630212
Rockville, Utah 84763
Utah Division of Drinking Water
Attn: Tim Davis
P.O. Box 144830
Salt Lake City, Utah 84114-4830
Subject: Rockville Pipeline Company PWS ID 27014 Consumer Confidence Report
Customer Notification
Dear Mr. Davis:
Enclosed is the Rockville Pipeline Company Consumer Confidence Report which
was also emailed to [e-mail] on March 25, 2024. It contains the water
quality information for our water system for the calendar year 2023.
We are mailing this report to our customers. We discussed this report at our annual
public meeting on March 6, 2024, and we have also made copies of the report
available at our office and on our web page.
If you have any questions, please contact me at 435-705-5060.
Sincerely,
Robert Snyder, President
Rockville Pipeline Company

Annual Drinking Water Quality Report
Rockville Pipeline
2023
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. Our water sources are Rimrock Spring and Wells 3,4,5. Our wells draw from the
Shinarump aquifer.
Rockville Pipeline Co. has a Drinking Water Source Protection Plan that is available for review to
our customers at our office. It provides more information such as potential sources of contamination
and our source protection areas. It has been determined we have a low susceptibility level to
contamination. Our source is in a remote location, and there are no potential contamination sources in
the protection zones, so we consider our source to have a low susceptibility to potential
contamination events.
There are many connections to our water distribution system. When connections are properly
installed and maintained, the concerns are 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 we 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 have any questions about this report or concerning your water utility, please contact Rob
Snyder, [phone], from 9 am to 4 pm. 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 first Tuesday of January, April, July, & October at 10 AM, Call [phone]
for an agenda. The meeting place is the Rockville Pipeline office.
Rockville Pipeline 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 is important to
remember that the presence of these constituents does not necessarily pose a health risk.

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 have provided the following definitions:
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.
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.

TEST RESULTS (water testing done in accordance with the Federal and Utah State laws)

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
2023 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
2023 Human and animal
fecal waste

Turbidity
for Ground Water
N ND –
0.29 NTU N/A 0.3 2022 Soil runoff
Radioactive Contaminants
Alpha emitters N 15 pCi/1 0 15 2021 Erosion of natural
deposits
Radium 226 N 3.3 pCi/1 0 5 2021 Erosion of natural
deposits
Radium 228 N 5.55 pCi/1 0 5 2023 Erosion of natural
deposits
Uranium N 0.8 Ug/l 0 30 2022 Erosion of natural
deposits
Inorganic Contaminants

Arsenic N 1.7

ppb 0 10 2022 Erosion of natural
deposits; runoff from
orchards; runoff from
glass and electronics
production wastes

Barium N 154 ppb 2000 2000 2022 Discharge of drilling
wastes; discharge
from metal refineries;
erosion of natural
deposits

Copper
a. 90% results
b. # of sites that exceed the AL
N a.111

b.0
ppb 1,300 AL=1,300 2022 Corrosion of
household plumbing
systems; erosion of
natural deposits

Lead
a. 90% results
b. # of sites that exceed the AL
N a. 4.3

b.0
ppb 0 AL=15 2022 Corrosion of
household plumbing
systems, erosion of
natural deposits

Nitrate (as Nitrogen) N ND ppm 10 10 2018 Runoff from fertilizer
use; leaching from
septic tanks, sewage;
erosion of natural
deposits

Selenium N 1.3 ppb 50 50 2022 Discharge from
petroleum and metal
refineries; erosion of
natural deposits;
discharge from mines

Sodium N 99.365 ppm 500 None set by
EPA 2022 Erosion of natural
deposits; discharge
from refineries and
factories; runoff from
landfills.

Sulfate N 33.513 ppm 1000* 1000* 2022 Erosion of natural
deposits; discharge
from refineries and
factories; runoff from
landfills, runoff from
cropland
TDS (Total Dissolved solids) N 468 ppm 2000** 2000** 2022 Erosion of natural
deposits
Disinfection Byproducts

TTHM [Total
trihalomethanes] N 46.89 ppb 0 80 2023 By-product of
drinking water
disinfection

Haloacetic Acids N 7.414 ppb 0 60 2023 By-product of
drinking water
disinfection
Chlorine N 0.666 ppm 4 4 2019 Water additive used
to control microbes

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.
Here is information about radium-228 in the RPC drinking water system:
1. The radium-228 quarterly sampling was triggered when the 2023 sample was 5.5 pCi/L. The maximum
allowed is 5 pCi/L.
2. After quarterly sampling is triggered then we need four quarters of data before we can determine if there is
an MCL violation. See Rule R309-205-7 for reference
(http://drinkingwater.utah.gov/documents/rules_ddw_version/R309-205_9-24-09.htm#_Toc251079942).
3. After we have data that covers all four quarters of the year we can then determine if we have an MCL
violation. If we don't have an MCL violation the rad sampling goes back to normal. If we do have an MCL
violation for radium-228 then it is a tier 2 violation which requires public notice and remedy of the
problem. In our case we’re looking at treatment or blending if blending is possible.
4. Here is our radium-228 data how it looks now:
2020 3.8-4.5 pCi/L,
2021 3.8-5.7 pCi/L,
2022 4.9 pCi/L,
2023 5.55 pCi/L.
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
(800-426-4791).
We at Rockville Pipeline work diligently 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.