Del Oro is proudly celebrating 57 years of serving California

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For 24-hour customer support or emergency, please call:

1-877-DEL-ORO-H2O
(1-877-335-6764)

For Billing or Service Inquiries:
1-530-717-2500

All Water Districts


Arbuckle (012) Country Estates (008) Lime Saddle (003) River Island (014)
Benbow (021) Ferndale (006) Magalia (004) Stirling Bluffs (005)
Black Butte (010) Hat Creek (023) Metropolitan (018) Strawberry (013)
Buzztail (020) Johnson Park (007) Mt. Lassen (015) Traver (019)
California Pines (011) Larkspur Meadows (022) Paradise Pines (002) Tulare (016)


The following are active Rules and Schedules which pertain to ALL Districts. They govern how Del Oro can conduct business as a water utility company. Tariffs and special Schedules specific to individual Districts can be found on each District's page.

CPUC Resolution W-5193

Updated on 02 July 2019

  • CPUC Resolution W-5193 Authorizing AL 511-A
  • Effective: May 30, 2019

Advice Letter 511

Updated on 30 March 2020

  • Catastrophic Wildfire Surcharge
  • Effective: Refer to AL 511-A

Advice Letter 505

Updated on 12 November 2018

  • Interim Disaster Relief
  • Effective: November 12, 2018

Advice Letter 507

Updated on 25 January 2019

  • Modifications to Schedule UF: CPUC Surcharge
  • Effective: April 1, 2019

Advice Letter 504

Updated on 12 November 2018

  • Revise Tax Gross Up on CIAC and AIAC
  • Effective: January 1, 2018

Advice Letter 495

Updated on 27 February 2018

  • Request to Establish the "Tax Cuts and Job Act" Memorandum Account
  • Effective: January 1, 2018

Advice Letter 484

Updated on 10 January 2018

  • Request to Establish Sustainable Groundwater Management Act Memorandum Account
  • Effective: May 23, 2017

Advice Letter 460

Updated on 21 July 2016

  • Modifications to Rule 14.1 & Schedule 14.1
  • Effective: June 29, 2016

Advice Letter 408

Updated on 03 June 2015

  • Modifications to Rule 14.1: Water Conservation & Rationing
  • Effective: June 1, 2015

Table of Contents

Updated on 20 January 2021

  • Table of Contents for Complete Tariff & Rule Book

Preliminary Statement

Updated on 20 January 2021

  • Preliminary Statement of Tariff and Rule Book

Rules 1-21

Updated on 20 January 2021

  • All Rules for Del Oro Water Company

Schedule LC - Late Charges

Updated on 20 January 2021

  • Advice Letter 518
  • Effective: February 1, 2020

Schedule UF - CPUC Surcharge

Updated on 01 October 2020

  • Resolution M-4841
  • Effective: October 1, 2020
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