Alternative Water Supply Planning
Annual Progress Report
June 11, 2024
Steven R. Ritchie
Assistant General Manager, Water
Manisha Kothari
Alternative Water Supply Program Manager
1 Alternative Water Supply Reporting
2 June 2020-June 2023
Quarterly Reports
February 2024
AWS Plan
June 2024
Annual Progress Report
Extending Existing Supplies
3 • Maximizing recycled water use for large-
scale irrigation with the construction of the
Westside Recycled Water Project
• Established and expanded ordinance since
2012, with 45 systems permitted and 29
planned
• Continuing to seek new technologies to
generate water savings and supplies at
every scale (e.g., atmospheric water
generation, efficient point-of-use fixtures)
• Robust active conservation program for over 30 years
• Leak Alert Program has resulted in estimated savings of 73 million gallons in FY 2022-23 • Implementing recommendations of independent Pacific Institute review • Plans to continue expanding use in drinking
water supply (up to 4 mgd)
Plan for Obligations, Build for Demands
4 Actions on AWS Plan Recommendations
5 AWS Plan Recommendations Current Status
AWS staff to recommend whether to approve participation in the LVE Project or not.
Continuation of work on the identification
and feasibility of water supply options.
Continue developing terms of agreement with project partners and prospective recycled water customers for the Daly City Recycled Water Expansion Project.
Staff will negotiate agreement terms for
construction, operation, and maintenance
of the project with its partners.
Funding for the South Bay Purified Water Project through 10% design and environmental review ($6.72 million*).
Continue to discuss with project partners
how the project concept can be updated to
meet needs of each partner.
Funding for planning through environmental review and 10% design for PureWater Peninsula ($5.28 million*) and ACWD- USD Purified Water ($8.02 million*).
Staff will carry out additional technical
analysis and explore public engagement
strategies.
Propose in FY 2025 budget for a new Purified Water Program Manager to track and ensure compliance with new regulations, coordinate with stakeholders, and support programs.
Included in FY 2025 budget.
*Included in the FY 2025-2034 CIP
Actions on AWS Plan Recommendations
6 AWS Plan Recommendations Current Status
Funding to evaluate treatment alternatives for the Groundwater Storage and Recovery project ($30.7 million*).
Evaluation of alternatives will begin once
funding is released in the coming
months.
Re-design of the Alameda Creek Recapture Project ($5 million*).
The re-design effort will commence once
funding is released in the coming
months.
Evaluate infrastructure and operational needs for the San Francisco Groundwater Supply Project ($13.5 million*).
Planning for the treatment project is
underway.
Support planning the technical analyses, demonstration, and outreach for PureWaterSF, a local supply project in the retail service area ($1 million*).
In fall 2023, staff conducted three focus
groups for SFPUC staff. Outreach and
education activities are ongoing.
*Included in the FY 2025-2034 CIP
Actions on AWS Plan Recommendations
7 AWS Plan Recommendations Current Status
Continue reporting progress on Proposed Voluntary Agreement and potential transfers and projects.
Ongoing, awaiting updates from the State
Water Resources Control Board.
Provide updates to the AWS Plan beginning in FY 2026-2027. None.
Develop 1-2 additional demand scenarios for the retail service area including a sensitivity analysis as appropriate.
Ongoing, staff will begin working on task
to update its econometric model in the
coming months.
In partnership with BAWSCA, explore the feasibility of a grant program to support local projects that reduce demands on the RWS.
Ongoing, staff will begin meeting with key
stakeholders to explore this program.
AWS Projects Throughout the Service Area
8 1. Daly City Recycled Water Expansion
2. PureWater Peninsula
3. South Bay Purified Water
4a. Los Vaqueros Reservoir Expansion (LVE)
4b. Supply Alternatives for LVE
4c. Conveyance Alternatives for LVE
5. ACWD-USD Purified Water
6. Calaveras Reservoir Expansion
Planned Investments to Fill the Water Supply Gap
9 Daly City Recycled Water Expansion 0.7 mgd Los Vaqueros Expansion, Conveyance, and Supply 3.9 mgd PureWater Peninsula 6 mgd Rationing Contribution of AWS Projects 2.34 mgd ACWD-USD Purified Water 5.4 mgd Calaveras Reservoir Expansion 28.6 mgd South Bay Purified Water 3.5 mgd Rationing Contribution of Calaveras 3.43 mgd 0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%
92 mgd
54 mgd
22 mgd
With Funding Without Funding
Water Supply GapAWS Projects in the FY 25-34 Capital Improvement Plan Timeline of AWS Projects
10 Projects Moving Forward for Implementation Projected Online Date Los Vaqueros Reservoir Expansion
2030
Los Vaqueros Conveyance
Los Vaqueros Supply
Daly City Recycled Water Expansion
Projects Moving Toward 10% Design and CEQA Projected Online Date South Bay Purified Water 2038
PureWater Peninsula 2039
ACWD-USD Purified Water 2040
Projects with Planning Deferred Projected Online Date
Calaveras Reservoir Expansion -
Financial Update
11 • In February 2024, the
SFPUC approved a 10-year
Capital Improvement Plan,
including funding for AWS
regional project planning.
• Total dollars spent for the
AWS Program between
July 2020 and May 2024 is
$12.4 million.
$867,000
$5,518,000
$419,000
$1,293,000
$690,000
$3,652,000
Calaveras Reservoir Expansion
Los Vaqueros Expansion Group (includes
reservoir expansion, supply alternatives, and
conveyance)
ACWD-USD Purified Water
PureWater Peninsula
Daly City Recycled Water Project
Programmatic Fund (includes South Bay
Purified Water and program-level activities)
Total dollars
spent on all
projects =
$12.4 million