DDW-2024-009285

195 North 1950 West • Salt Lake City, UT
Mailing Address: P.O. Box 144830 • Salt Lake City, UT 84114-4830
Telephone [phone] • Fax [phone] • T.D.D. [phone]
www.deq.utah.gov
Printed on 100% recycled paper
State of Utah

SPENCER J. COX
Governor

DEIDRE HENDERSON
Lieutenant Governor
Department of
Environmental Quality

Kimberly D. Shelley
Executive Director

DIVISION OF DRINKING WATER
Nathan Lunstad P.E.
Director

July 15, 2024

David Hewett
Foothill Water Users Association
2268 North Cottontail Drive
Cedar City, Utah 84721

Dear Mr. Hewett,

Subject: RTCR Level 2 Assessment Foothill Water Users Association UTAH11099

Thank you for meeting with me on May 23, 2024, to conduct the Level 2 Assessment (L2) of your
water system. Your cooperation in facilitating this assessment is greatly appreciated.

Observations:
The assessment was conducted due to four Level 1 assessments performed within a 12-month
period. These assessments included routine, repeat, and Triggered Source Total Coliform Positive
(TC+) and (EC+) Escherichia coli (E. coli) samples collected from December 2023 through May
2024.
Foothill Water Users is a residential subdivision with 13 service connections. The system includes
a well source, a 140,000-gallon above-ground steel storage tank, and a distribution system of
unknown size and type. The distribution system also includes fire hydrants distributed throughout
the area.
The system is currently not approved due to multiple deficiencies in the well, tank, and
distribution system. During the site visit, the steel storage tank was found to have multiple holes
and seams coming apart, rendering it capable of holding only a few feet of water. The system is
currently under a Boil Order as of the date of this letter and is in the process of replacing the tank
and completing improvements to the wellhead building.
Conclusions:
1. The TC+EC+ samples are likely due to outside contamination entering compromised storage
tank.
David Hewett
Page 2
July 15, 2024

Deficiencies:

Deficiencies were assigned on the Sanitary Survey (SS), as this was a combined SS/L2 site visit.

Recommendations:
1. Distribution System O&M: Conduct disinfection and flushing of the distribution system
in accordance with AWWA C651 standards.
2. Revise RTCR Sample Site Plan: Update the RTCR sample site plan to exclude sampling
sites located at the ends of the system and submit the revised plan to the Division of Drinking
Water (DDW).
3. Implement Unidirectional Flushing Program: Initiate a unidirectional flushing program
with a goal of achieving a flushing velocity of 2.5 feet per second. For assistance, contact
the Rural Water Association of Utah.
4. Follow Sanitary Sampling Protocol: Ensure that sampling locations are properly flushed
and disinfected using a strong chlorine-based solution. This includes applying the solution,
allowing adequate contact time, flushing the site, and collecting the sample.
Contact Rural Water Association of Utah for Further Technical assistance or questions on
flushing/sampling procedure: Terry Smith 435-691-0691 [e-mail]

Feel free to contact me at [phone] or [e-mail], with questions or if we can be of
further assistance.

If you have any questions regarding the work performed, please contact Field Services Section
manager, Ryan Dearing, at [e-mail] [phone].

Sincerely,

Brian Pattee
Environmental Scientist
Utah Division of Drinking Water

Enclosures: Assessment Report
cc:
Brian Pattee, Division of Drinking Water, [e-mail]
Sitara Federico, Division of Drinking Water, [e-mail]
Jeremy Roberts, Southwest Utah Health Department, [e-mail]
Paul Wright P.E., DEQ DE, [e-mail]

David Hewett
Page 3
July 15, 2024