Customer Services

Customer Service RepresentativeTUD 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, new service installations, new accounts, billing, payment processing, collections and water use efficiency.

Contact Customer Service

Hours: 7am to 4pm (Monday thru Friday)
Closed on Major Holidays

Office Location:
Click Here For Map
18885 Nugget Blvd, off of Tuolumne Road
Sonora, CA 95370

Phone: 209-532-5536
Fax: 209-536-6485



Paying your TUD Bill – Payment Options

  • Cash, Check, Credit Card (Discover, Visa and MasterCard) or Debit is accepted at the TUD office located at 18885 Nugget Blvd. during regular business hours, (7am to 4pm) Monday thru Friday.
  • After Hours Drop Box: For your convenience, we have a secure “After Hours” drop box located in the front TUD parking lot area.
  • Pay anytime online by making a payment through the TUD Payment Center. To utilize this option you will your TUD account number and the last name or business that appears on your TUD account.
  • Over the Phone, by calling our friendly Customer Service staff between the hours of 7am to 4pm, Monday through Friday. We gladly accept Discover, Visa and Mastercard. To utilize this option you will need your credit card, your TUD account number and your property service address.


If your landowner is a TUD customer, you may have your water/sewer billing sent directly to you by completing a Tenant Application. An $80.00 deposit for water service and $60.00 for sewer service is required. Your landowner will need to have an Owner Application and Owner Consent Form, on file with TUD before we can accept your Tenant Water/Sewer Application. Click Owners Papers to print out these forms, have the owner or landlord complete and fax them to TUD’s Customer Service staff at 209-536-6485.

Starting a New Connection – It’s Easy!

If you have existing water/sewer service, just give one of our friendly customer service members a call at 532-5536 (Monday thru Friday, 8am to 4pm) and they will be glad to setup your account. If you do not have a water or sewer connection, you will need to complete a Water/Sewer Application and meet with our customer service engineer (located at the TUD office) to determine connection fees.

Billing Information

Water Meter

For water service charges will be rendered to users at bi-monthly intervals (every two months). Once you receive your account statement, bills are due and payable upon receipt and shall become delinquent thirty (30) days after the posted statement. For a detailed list of our Billing Payment policy, please see the attached document Regulation 4 – Billing Payments and Miscellaneous Fees.

Water and Sewer Rates

TUD customers with water service are billed in bi-monthly intervals and are billed according to meter size and water consumption used. TUD wastewater or sewer rates are billed monthly or if they have a combined water and sewer account are billed bi-monthly.

Water and Sewer Rates

TUD Water Rules and Regulations – Amended October 18, 2016.