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Zone of Benefit Study

The water district protects and replenishes local groundwater supplies to ensure water supply reliability for Santa Clara County. Management of the sustainable groundwater supply is funded by groundwater charges, which are applied to groundwater pumpers within zones benefitting from district activities. These activities include replenishing groundwater with local and imported surface water, monitoring and protecting groundwater from pollutants, and constructing, operating, and maintaining facilities that help sustain groundwater supplies.

The district is currently conducting a study to evaluate the extent of the zones of benefit to ensure they accurately reflect the areas receiving benefit from district activities to protect and replenish groundwater. The study is not evaluating the rates that are charged within the zone of benefit. This study will provide the district with a scientific, transparent basis for proposing changes to the current zones of benefit, if necessary.

How to participate

The community is invited to provide input into the Zone of Benefit Study throughout the planning process. Input received will be included in the report presented to the district’s Board of Directors for consideration.

  • Community meeting on March 12, 2015 – During the Groundwater Open House, staff presented an overview of the Zone of Benefit Study and collected input.
  • Small group briefings – Small group briefings will be held periodically throughout the study process. Anyone interested in detailed information about the study is invited to participate. Each briefing is an opportunity to provide written and verbal input. To be added to the interested parties notification list for this study, sign up here.
  • Board meetings – The study milestones were presented to the district’s Board of Directors in October 2015. The preliminary report and recommendations are expected to be presented to the Board of Directors in late summer of 2017. Community members are invited to attend Board meetings and provide comments to the Board.
  • Community meeting – After the methodology is developed and the data is evaluated, the community will be invited to a meeting to provide input into the recommendations. More information will be provided as we approach this milestone.

  • Sign up to receive project updates and information about related meetings.

Documents and Presentations

Contact: George Cook,,  408-630-2964