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Treated Water Service Rates for CY 2019, CY 2020, CY 2021 and CY 2022

Following a public rate-setting process, in a 4-3 vote, the Board of Directors approved a water rate increase for CY 2019, CY 2020, CY 2021 and CY 2022, subject to the Board revisiting the rates after two years.  The overall annual increase is 6.7% per year. 

Treated Water Service Rates for CY 2017 and 

CY 2018

Untreated Water Service Rates for CY 2020
To determine the untreated water rate for calendar year 2020, Zone 7 contracted with Raftelis Financial Consultants, Inc. (Raftelis) to conduct a cost of service study for untreated water service. The process included discussions with untreated water customers and the Zone 7 Finance Committee. On October 16, 2019 the Board adopted a rate of $173 per acre-foot for CY 2020.

Untreated Water Service Rates for CY 2019

Untreated Water Rates for CY 2018

Untreated Water Rates for CY 2017

Wholesale Water Rate Study


Why Drought Makes Water Rates Rise 

Learn more about why water bills often go up in droughts, based on research by the Public Policy Institute of California.

How does Zone 7 Impact Your Water Rates?

More than 80 percent of Zone 7's water supply starts as Sierra snowmelt and is imported to the Valley from the State Water Project using the Delta and South Bay Aqueduct for conveyance. Zone 7 either stores it in the local groundwater basin for later use, or treats the water for delivery to your local water retailer as drinking water. In turn, your retailer -- the City of Pleasanton, the City of Livermore, Dublin San Ramon Services District or the California Water Service Company -- delivers the water to you, factoring in its own cost of service before sending you the final bill.

Rates for untreated water are based on the cost of acquiring the untreated water, Bay-Delta related costs and an adminsitrative fee based on staff costs. Additional information on untreated water service can be found here.