DDW-2025-003011

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
March 14, 2025

Garrick Wilden Mayfield Town Water System PO BOX 541 52 N Main MAYFIELD, UT 84643
Subject: Notice of Decreased Monitoring for Mayfield Town Water System; UTAH20006 Garrick Wilden:
This letter serves as notification that quarterly monitoring for radionuclides is no longer required
at the Lower Spring (identified as WS002). A radionuclide sample is now due once every nine years. The next radionuclide sample from the Lower Spring (WS002) is due sometime between January
1, 2029, and December 31, 2037.
Following the issuance of an operating permit, Mayfield Town Water System has collected a sufficient amount of radionuclide samples from the Lower Spring (WS002) to qualify for reduced monitoring under R309-205.

The updated monitoring requirements for the Lower Spring (WS002) are given below. An updated monitoring schedule can be viewed any time at waterlink.utah.gov under the water monitoring section.
Facility with new
requirements
Analyte(s)
Required # of samples Sampling
Frequency Next Due Date Rule
Reference
WS002 Lower Spring Nitrate 1 Yearly 01/01/2025-12/31/2025 R309-205-5(4)(a)
Volatile Organic Contaminants 1 Yearly 01/01/2025-12/31/2025 R309-205-6(2)
Inorganics & Metals 1 Every three years 01/01/2026-12/31/2028 R309-205-5(3)(a)
Sulfate, Sodium, TDS 1 Every three years 01/01/2026-12/31/2028 R309-205-5(3)(a)
Garrick Wilden Page 2 of 2
March 14, 2025

Pesticides 1 Every three years 01/01/2026-12/31/2028 R309-205-6(1)(f)
Radionuclides 1 Every nine years 01/01/2029-12/31/2037 R309-205-7(1)(c)
PFAS Collect (1) sample every 5-7 months during a 12 month period for a total of 2 samples by April 26, 2027. 40 CFR 141 (2024) PFAS Information and Resources The EPA rule for PFAS requires that either method 533 or 537.1 version 2 are used for testing.
Please ensure that the chosen laboratory processes PFAS samples using one of these methods.
Additionally, the Division has resources to assist water systems in completing the PFAS initial monitoring requirements. For more information on the resources the division can provide related to PFAS initial monitoring please visit ddwpfas.utah.gov. For PFAS related questions, please contact John Steffan at [e-mail] or [phone].
Thank you for your efforts in maintaining a clean drinking water system. Please contact David Kruse at (385)-566-7789 or [e-mail] for questions regarding the source monitoring and reporting requirements for your water system.
Sincerely,
Mark Berger
Monitoring and Standards Section Manager
Enclosure: Monitoring Schedule
cc: Garrick Wilden, Mayfield Town Water System, [e-mail]
Eric Larsen, Central Utah Health Department, [e-mail]
John Chartier P.E., DEQ District Engineer, [e-mail]
Mark Berger, Division of Drinking Water, [e-mail]
John Steffan, Division of Drinking Water, [e-mail]
David Kruse, Division of Drinking Water, [e-mail]