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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.

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.


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.

General Info

Tuolumne Utilities District (TUD) is the largest water and wastewater utility serving nearly 44,000 residents in Tuolumne County.


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. 


When the District was formed in 1992, it acquired the water and sewer systems previously owned and operated by predecessor agencies. This includes water and sewer systems throughout Tuolumne County and within the City of Sonora, the only incorporated City within the County. The conditions of the acquired systems varied widely; with the Regional Sewer System in good condition while the other sewer and water systems serving District customers varied from good to poor condition. One of the stated purposes of the formation of TUD was to serve as a receiving agency of privately owned water and sewer systems that were either determined by the regulatory agencies or the system’s customers to be better served by the District. The District continues to fund capital improvement projects in an effort to improve water infrastructure and sewer infrastructure.


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.

Thu 22

Regional Sewer Advisory Committee

March 22 @ 9:00 am - 11:00 am
Tue 27

Regular Board Meeting

March 27 @ 2:00 pm - 4:00 pm
Apr 14

Home and Garden Show

April 14 - April 15


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.



Fix A Leak Week, March 19th-25th

Fix a Leak Week! Are you ready to chase down leaks? Household leaks can waste more than 1 trillion gallons of water annually nationwide, so each year we ask customers to  hunt down the drips during Fix a Leak Week. Mark your calendars for the EPA’s tenth annual Fix a Leak Week, March 19 through 25, […]

Winter Storm Warning in Effect 2/28/2018-3/3/2018

Weather Summary:  Cold and snowy winter storm arrives this afternoon. The system will be snowier and just as cold as the last system that took place earlier this week. This storm combines cold air and a significant moisture supply to bring very heavy snow, down into low levels. Major impacts to travel across a wide range of elevations […]

UCCE Tuolumne County Master Gardener’s Open Garden Day

The Master Gardeners are having their next Open Garden Day this Saturday, February 3, 2018 at the Demonstration Garden at 251 South Barretta Street in Sonora. There is no cost to attend Open Garden Day or to tour the garden. The garden will be open from 10am to 1pm. At 10:30am they will be discussing […]



Jamestown Reservoir Replacement

The Jamestown Reservoir Replacement Project replaces an antiquated one million gallon in-ground reservoir with a one million gallon welded steel tank which supplies treated water to the community of Jamestown. In February 2017, The District was awarded grant funding and obtained a sub-recipient funding agreement with Tuolumne County from the Community Development Block Grant (CDBG) [...]
12 Nov, 2017 Read More

Columbia Clearwell

In early October the Columbia clearwell project began which will remove and replace all of the interior and exterior coatings of the clearwell. A clearwell stores water as part of the treatment process prior to delivery to customers. In addition to reestablishing the internal and external coatings, the project will replace the roof structure to [...]
12 Nov, 2017 Read More

Hazardous Tree Removal

PROJECT UPDATE Dead or dying trees pose a significant threat to TUD water infrastructure by falling onto or around TUD facilities including water tanks, buildings and TUD’s 71 miles of ditch system which delivers water to most of the population in Tuolumne County.  Falling trees could significantly damage water tanks, water treatment plant buildings and [...]
1 Nov, 2017 Read More

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