Del Oro is proudly celebrating 50 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

Black Butte District - Advice Letters


The following Advice Letters are currently active or are pending approval by the California Public Utilities Commission

Advice Letters Files

Advice Letter 481

Updated on 11 May 2017

  • Interim Rate Surcharge
  • Effective: April 10, 2017

Advice Letter 465

Updated on 27 March 2017

  • General Rate Case
  • Effective: March 28, 2017

Advice Letter 467

Updated on 27 March 2017

  • Consumer Price Index of 0.7%
  • Effective: Oct 7, 2016

Advice Letter 439

Updated on 27 March 2017

  • Consumer Price Index of 0.7%
  • Effective: April 12, 2016

Advice Letter 421

Updated on 27 March 2017

  • Adoption of Initial Tariff
  • Effective: September 24, 2015

2014 General Rate Case

Updated on 10 October 2016

  • General Rate Case 2014
  • Effective: August 28, 2014
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