Water Supply Assessments for the City of San José,
Santa Clara County, California
The City — the largest in Silicon Valley — has
addressed its planned growth with a series of Water Supply
Assessments that document water supply and demand, and help
ensure water supply reliability.
Todd Groundwater has prepared water supply assessments (WSA) for five
City of San José Municipal Water System (SJMWS) projects:
the North San José redevelopment project,
Evergreen East Hills Vision Strategy,
Coyote Valley Specific Plan,
Gavilan College Coyote Campus, and
Envision San José General Plan Update.
These assessments were prepared in compliance with Senate Bill 610, which
requires a water supply assessment for large developments.
An SB 610 water supply assessment includes description of the service area,
evaluation of water demands, and assessment of available water supply under
normal rainfall and drought conditions.
In all projects, the City’s assessments involved coordination among
water agencies, including the
Santa Clara Valley Water District (SCVWD),
San Francisco Public Utility Commission (SFPUC), and others.
Vision North San José
The North San José project has involved extensive high-density redevelopment
of North San José.
The water supply assessment for North San José was completed within a very
Working with the SCVWD and other wholesale water suppliers, SJMWS was able to
create a varied portfolio of water supply options including imported water,
groundwater, water conservation, and recycled water, which allows flexibility
in the event of short term or long term droughts.
Evergreen East Hills Visioning Strategy
The Evergreen East Hills Visioning Strategy included analysis of six
potential scenarios of development, each with a unique blend of proposed
The water demand of each scenario was met with a different mix of
water supply based on the proposed needs and opportunities.
In all cases, the use of recycled water and demand conservation was
maximized to reduce demand during drought.
Coyote Valley Specific Plan
The Coyote Valley Specific Plan (CVSP) describes a self-contained community
to integrate over 50,000 new, industry-driving jobs and 25,000 new residences.
Todd Groundwater worked closely with stakeholders including SCVWD to develop
a comprehensive WSA with three potential water supply scenarios to meet
future needs of the CVSP.
These scenarios examined potential sources of water supply including
imported water, groundwater, and recycled water for both irrigation and
industrial use, and demand conservation.
The three scenarios of water supply allow for flexibility in water supply
planning while still ensuring sufficient supply in the future.
At this time, CVSP has not been approved for development.
Gavilan Coyote Campus
The Gavilan Joint Community College District, which serves students in
San Benito and southern Santa Clara counties, plans to build a new campus in
The Coyote Campus will include classrooms, office space, athletic fields,
and other landscaping.
The District contacted SJMWS as the water retailer and requested a
water supply assessment.
Todd Groundwater prepared a WSA that built on the water supply analysis
performed for the CVSP WSA.
Envision San José General Plan Update
Lastly, the City of San José updated its General Plan through a process
called Envision San José 2040.
Todd Groundwater assisted San José Municipal Water System
— one of three retailers identified to provide water supply —
in preparing the WSA.
Envision San José 2040 examined four scenarios containing different levels
of job and housing growth.
The WSA quantified the water demand for the homes and jobs for each of the
four scenarios, distinguishing potable from non-potable demand
(which could be satisfied with recycled water).
Todd Groundwater quantified sources of water supply, addressed potential
limits on supply (such as climate change), and provided a comparison of
water supply and demand.