DDW-2025-001753

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, Ph.D., P.E.
Director

February 4, 2025

Matthew Chambers
Sorrel River Ranch Water
Mile 17, UT-128
Moab, UT 84532

Subject: Increased Disinfection Byproduct Monitoring for Sorrel River Ranch Water
UTAH10033

Dear Matthew Chambers:

The Utah Division of Drinking Water has changed the disinfection byproduct (DBP) sampling
requirements for Sorrel River Ranch Water because the system's annual averages for Total
Trhialomethanes (TTHMs) and Total Haloacetic Acids (HAA5) in 2024 exceeded 60 ug/L and 45 ug/L,
respectively [R309-210-10(6)]. The system may return to its previous reduced monitoring schedule if the
annual averages are less than 40 ug/L for TTHMs and less than 30 ug/L for HAA5 after four quarters of
monitoring.

DBP Monitoring Requirements
The water system is now required to collect one (1) DBP sample(s) per quarter. Each sample must be a
dual sample set of total trihalomethanes (TTHMs) and haloacetic acids (HAA5). The next DBP samples
must be collected during the April 1 - June 30, 2025, monitoring period.

Questions
You may access an updated version of your water system’s monitoring schedule at waterlink.utah.gov by
searching for your water system and then clicking “Water Monitoring.” If you have any questions, please
contact Luke Treutel at [phone] or [e-mail].

Page 2

Sincerely,
Mark Berger
Monitoring & Standards Section Manager

cc: Matthew Chambers, Sorrel River Ranch Water, [e-mail]
Orion Rogers, Southeast Utah Health Department, [e-mail]
Luke Treutel, Division or Drinking Water, [e-mail]
Curtis Page, DEQ District Engineer, [e-mail]