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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. 


Given the growing threat of extreme hot, windy weather, Pacific Gas and Electric Company (PG&E) is alerting customers to be prepared for power outages to minimize the risk of power lines sparking a fire. If extreme fire danger conditions threaten a portion of the electric system serving our region, it will be necessary for PG&E to turn off electricity in the interest of public safety. This is called a Public Safety Power Shutoff (PSPS). Learn more about Public Safety Power Shutoffs that could impact you this wildfire season. Visit See the video provided by PG&E.

Tuolumne Utilities District is actively planning for the potential of extended power outages with the goal of minimizing water service interruption. The challenge is the array of infrastructure and terrain that the District’s service area covers. The District is aggressively pursuing backup power generators to meet the power needs of critical infrastructure. If a PSPS event occurs for an extended amount of time, TUD will be asking all customers to conserve and limit outdoor water usage until power is restored. Upload this informational flyer on How TUD is Preparing for a PSPS. For more information on how to prepare,

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.

Fri 13

Special Board Meeting

December 13 @ 10:00 am - 2:00 pm
Tue 24

Holiday Observed – Office Closed

December 24 @ 7:00 am - 4:00 pm
Wed 25

Holiday Observed – Office Closed

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


Traffic Advisory for Bradford Street in Downtown Sonora

TRAFFIC ADVISORY FOR TUESDAY, DECEMBER 10TH:  Tuolumne Utilities District construction crews will be replacing a water main pipeline on Bradford Street in downtown Sonora tomorrow, Tuesday, December 10th. Bradford Street will be closed from 8am to noon from Seco Street to Poplar Street, with a detour in place starting at Poplar Street. If possible, please […]

“Trap the Grease” While Cooking This Thanksgiving!

The Thanksgiving holiday this week will have many Tuolumne County residents busy cooking in their kitchens. To avoid potential plumbing and sewer problems, Tuolumne Utilities District (TUD) would like to remind residents how to properly dispose of fats, oils and grease. Sewer blockages can cause backups into homes resulting in an unpleasant mess that can […]

Traffic Advisory for Highway 49 in Downtown Sonora

TRAFFIC ADVISORY – LANE CLOSURE ON HIGHWAY 49 Tuolumne Utilities District (TUD) field crews will be conducting exploratory excavation in conjunction with a water main improvement project in downtown Sonora on Tuesday, November 26th. Work will take place near the intersection of Highway 49 and School Street on Tuesday, November 26th between the hours of […]


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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