The Hetch Hetchy Regional Water System collects surface runoff from rivers and creeks in three major watersheds that is stored in reservoirs that are created by dams, both large and small, for municipal water supply and hydropower generation. These dams and reservoirs are essential elements of our water delivery system. A dam is a structure (usually an earthen embankment or concrete) designed to hold back water, together with appurtenant works (such as a spillway). The California Division of Safety of Dams (DSOD) regulates dams in California that are of a certain size (generally above 25 feet

To help better understand the potential vulnerability of the SFPUC Regional Water System (RWS) to uncertain future conditions, SFPUC partnered with The Water Research Foundation to develop a long-term vulnerability assessment (LTVA) of the RWS. The study was conducted by University of Massachusetts Hydrosystems Research Group with input from National Center for Atmospheric Research, other climate scientists, and Deltares. The goal of the LTVA is to help quantitatively and qualitatively assess to what extent climate change will be a threat to the RWS in comparison to, or in combination with

These are unprecedented and trying times for all of us. Thank you for your service and flexibility as we all work together to keep our families, colleagues, and communities safe. If you have questions, please send an email to covidinfo@sfwater.org. Department of Human Resources Covid-19 Announcements and Documents https://sfdhr.org/covid-19 Online Learning Tools and Resources To protect your SFPUC User Credentials, the Multi-Factor Authentication (MFA) registration process and changes to your security information must be completed within a SFPUC location directly connected to our private

We own and operate the Hetch Hetchy Regional Water System which serves 2.7 million residents and thousands of businesses. We provide water directly to residents and businesses San in Francisco and wholesale customers through 27 cities and public water agencies in Alameda, Santa Clara, and San Mateo counties.

The Urban Water Management Planning Act (California Water Code Sections 10610-10657) requires urban water suppliers to update their Urban Water Management Plan (UWMP) and Water Shortage Contingency Plan (WSCP) every five years. The City and County of San Francisco adopted its 2025 UWMP, including the 2025 Water Shortage Contingency Plan, on June 23, 2026. The 2025 UWMP provides an overview of our water deliveries and uses, water supply sources, and water conservation programs. It will also include discussions on supply and demand projections over a 25-year planning horizon (from 2025 to 2050)

Each year, the Water Resources Division issues an annual report on local water supply and water conservation program achievements for the previous fiscal year. The reports present a high-level snapshot of SFPUC water sources and uses; a description of water conservation assistance provided to customers; and local water supply program achievements in groundwater, recycled water and non-potable water reuse. SFPUC Water Resources 2024-25 Annual Report Prior reports are available upon request by contacting waterconservation@sfwater.org.

Agendas 2026 Minutes 2026 January 12 January 12 Minutes January 13 January 13 Minutes January 23 January 23 Minutes January 27 January 27 Minutes January 29 January 29 Minutes February 5 February 5 Minutes February 10 February 10 Minutes February 24 February 24 Minutes March 10 March 10 Minutes March 24 March 24 Minutes April 14 April 14 Minutes April 28 April 28 Minutes May 12 May 12 Minutes May 26 May 26 Minutes June 9 June 9 Minutes June 23 June 23 Minutes July 14 July 14 Minutes July 28 July 28 Minutes August 11 (Cancelled) August 25 (Cancelled) Notice of Public Hearing (posted August 14

The Hetch Hetchy Power System is good for customers, the City, and the planet. The electricity is cost-effective and 100% greenhouse gas-free, helping the City’s fiscal bottom line, combating climate change, and protecting public health. We own and operate all aspects of the Hetch Hetchy Power system: 385 MW of greenhouse gas-free hydroelectric generation capacity 8.5 MW of solar generation capacity 160 miles of clean energy transmission lines from Yosemite to the Bay Area View our 2025 Power Content Label to better understand what type of energy we generate and where it comes from. (See 2024