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TUD Rate Adjustment Effective Jan. 1, 2020

Customer Service

TUD strives for excellence in customer service. A dedicated staff provides a wide range of services including assisting our customers with all water and wastewater service related issues, changes regarding your account, billing, payment processing and water use efficiency.

Annual Water Quality Report

Tuolumne Utilities District has released its Annual Water Quality Report (also known as the Consumer Confidence Report) covering all testing of treated drinking water performed from January 1st through December 31, 2017. The water quality report covers the 11 water service areas the District serves, 11 surface water treatment plants, and 12 active wells. 


Thank you for your interest in working for Tuolumne Utilities District. The District is committed to employing and retaining a high quality, motivated workforce dedicated to delivering high-quality services to the community.

Board of Directors

The Board of Directors establishes policies for the operation of the District. The public is encouraged and invited to attend the regularly scheduled District Board meetings which occur at 2pm on the 2nd and 4th Tuesday of the month.


The District views the budget as an essential tool for proper financial management. The budgets are developed with input from the various department levels of the TUD organization.

Development Services

Our Engineering department would be glad to assist you on new water or sewer service at TUD, new development or other services. 


Traffic Advisory for Downtown Sonora Starting Tuesday, 2/11

TRAFFIC ADVISORY FOR TUESDAY, FEBRUARY 11TH: Tuolumne Utilities District construction crews will be replacing a water main pipeline in downtown Sonora starting Tuesday, February 11th. Motorists are encouraged to avoid Bradford Street, Green Street and Norlin Street in Sonora if possible, from Tuesday, February 11th to Friday, February 14th while crews are working in the […]

TUD Moving Forward with Improvements to Willow Springs Water Lines

The Tuolumne Utilities District (TUD or District) plans to invest $24.7 million dollars in water related Capital Improvement Projects (CIP) over the next five years. One of the many critical water projects identified in the CIP plan is the Willow Springs Distribution Improvements Project which replaces approximately 6,000 linear feet of leaky, undersized, galvanized steel […]

Phoenix Lake Preservation and Restoration Project Update

Project Update – February 6, 2020  The District is continuing to move forward with the Phoenix Lake Preservation and Restoration Project. If you live near Phoenix Lake you may notice the following activity: ) Bird deterrents being placed such as owl figurines, orange spheres that look like eyes, and shiny ribbon. These measures will protect […]

Board Directors

TUD is governed by a five-member Board of Directors, elected at large. The Board of Directors establishes policies for the operation of the District.

Board Vision & Goals

The Board of Directors meet annually to set Strategic Goals, Vision, Plan and Execution for the District.

Agenda, Minutes & Video

TUD Board of Director meetings can be viewed LIVE by simply connecting through the internet. Or to find out more about the TUD Board meetings – including Agenda, Minutes or Video any time.


The Board of Directors establishes policies for the operation of the District. The public is encouraged and invited to attend the regularly scheduled District Board meetings which occur at 2pm on the 2nd and 4th Tuesday of the month.

Tue 25

Regular Board Meeting

February 25 @ 2:00 pm - 4:00 pm
Mar 10

Regular Board Meeting

March 10 @ 2:00 pm - 4:00 pm
Mar 24

Regular Board Meeting

March 24 @ 2:00 pm - 4:00 pm


Approximately 95% of the water the District distributes originates from the South Fork Stanislaus River and is impounded in Pacific Gas and Electric Company’s (PG&E) Lyons and Pinecrest Reservoirs. PG&E owns and operates a canal and flume system to convey water from Lyons Reservoir to the Phoenix Powerhouse. The District owns and operates a total of 71 miles of ditch, flume, pipe, and tunnel infrastructure that diverts water from the PG&E system at various locations. The majority of TUD customers reside in or near the community of Sonora which is at about elevation 2,000 feet elevation. TUD also serves customers in several communities to the east up to about elevation 6,000 feet elevation past Sierra Village.



The District utilizes approximately 140 miles of sewer pipeline to collect between 400-500 million gallons of sewage per year. The Sonora Regional Wastewater Treatment Plant was constructed in the late 1970’s along with a network of sewer trunk lines to collect sewage from the surrounding areas of Columbia, East Sonora, Mono Village, Mono Vista, Ranchos Poquitos, Soulsbyville, Twain Harte, and Willow Springs. Also in the late 1970’s, a regional reclamation system was constructed that allows for the reuse of the treated sewer effluent for irrigation on pasture lands outside of the community of Jamestown. The overall sewer system directly serves approximately 6,000 residential, commercial and industrial customers.




Mono Vista Tank Replacement Project

The Tuolumne Utilities District (TUD) is excited to announce the construction of a new water storage tank as part of the Mono Vista Tank Replacement Project.  The existing 400,000 gallon Mono Vista Water Tank in Sonora is in poor condition with severe corrosion on the interior of the tank. The roof of the tank has [...]
1 Oct, 2019 Read More

Jamestown Water Tank Project Completed

Tuolumne Utilities District (TUD/District) is holding a ribbon cutting ceremony on Thursday, October 10th  at 11am to celebrate the completion of the Jamestown Water Tank Project.     The newly constructed Jamestown Water Tank replaces the former Jamestown Reservoir, a 1-million gallon underground reservoir originally constructed in 1937 that suffered from structural concrete cracking and a [...]
25 Sep, 2019 Read More
Oneil tunnel

O’Neil Tunnel Improvements Project

Tuolumne Utilities District (TUD) has started the O’Neil Tunnel Improvements Project with improvements to the O’Neil Tunnel, which is located on the historic 1852 Table Mountain Ditch, one of thirteen ditch conveyance systems the District operates. The O’Neil tunnel is located at the end of the Table Mountain Ditch at O’Neil Reservoir near Jamestown.  The [...]
5 Aug, 2019 Read More

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