DDW-2025-004334

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

DIEDRE HENDERSON
Lieutenant Governor
Department of
Environmental Quality

Tim Davis
Executive Director

DIVISION OF DRINKING WATER
Nathan Lunstad, Ph.D., P.E.
Director

May 6, 2025

Jacob Sharp
Castledale
PO Box 877
Castle Dale, UT 84513

Jacob Sharp:

Subject: Reduced Disinfection Byproduct Monitoring for Castledale, UTAH08001

This letter is to inform you that the Utah Division of Drinking Water has changed the disinfection
byproduct (DBP) sampling schedule for Castledale because the water system now qualifies for reduced
DBP monitoring based on sample results from the previous year.

DBP Monitoring Requirements
The water system is now required to collect one (1) DBP sample 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. The specific sites that need to be
monitored can be found on the system’s WaterLink page under the water monitoring section.

If you have any questions, please contact Luke Treutel at [phone] or [e-mail].

Sincerely,
Mark Berger
Monitoring & Standards Section Manager

cc: [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]