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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.

Mon 18

Special Board Meeting

December 18 @ 10:00 am - 11:00 am
Mon 25

Holiday – Office Closed

December 25 @ 7:00 am - 4:00 pm
Tue 26

Holiday Observed – Office Closed

December 26 @ 7:00 am - 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.



Sewer Pipe Lining in Sonora – Traffic Advisory

The Tuolumne Utilities District wastewater department will be performing maintenance and annual lining of sewer pipeline on Wednesday, December 13th and Thursday, December, 14th from 7am to 5pm. The sewer lining is part of the District’s Capital Improvement Plan and improves flow in the pipeline to the Regional Wastewater Treatment Plant in Sonora. Wednesday – […]

Agencies Join Forces to Promote “Trapping Your Grease” During the Holidays!

SONORA, CA: The Thanksgiving holiday this week will have many Tuolumne County residents busy cooking in their kitchens. To avoid potential plumbing and sewer disasters, Groveland Community Services District, Jamestown Sanitary District, Tuolumne City Sanitary District, Tuolumne County Solid Waste Department, Tuolumne Utilities District, Twain Harte Community Services District and Waste Management would like to […]

Annual Ditch Outage – Please Conserve!

The Pacific Gas and Electric Company (PG&E) Main Canal that conveys 95% of Tuolumne Utilities District’s water supply will be shut down for PG&E’s regular maintenance from Monday, October 9th through Monday, October 16th, 2017. With this in mind, the District asks that you limit your water use while PG&E does its repairs and improvements. […]



Phoenix Lake Copy

PHOENIX LAKE PRESERVATION & RESTORATION PLAN Phoenix Lake is the primary drinking water source for Sonora, Jamestown, Scenic View, and Mono Village, in Tuolumne County’s “gold country.” Constructed in 1852 to support hydraulic mining, the 88-acre lake today is one of several reservoirs in the Tuolumne Utilities District (TUD) distribution system. Phoenix Lake lies three [...]
13 Dec, 2017 Read More

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

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