Active Alerts

Flood and high wind watch for San Francisco. 

For your safety, avoid driving or walking through standing water at all cost.
Please be cautious of manhole covers that may have been dislodged. Report dislodged manhole covers to @SF311. 

Emergency Operations Center (EOC) Activated

The City has activated the Emergency Operations Center (EOC) to coordinate citywide operations, such as clearing storm drains, responding to hill slides, distributing sandbags, and ensuring residents are informed.
Report non-life-threating storm issues to 311, such as:

  • Clogged catch basins
  • Non-life-threatening street and residential flooding
  • Sewer backups or wastewater odors
  • Downed trees

Read more about what to do before and during the storm.

Stay safe and avoid unnecessary travel.

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Water Supply

Our programs conserve, protect, and carefully manage this precious resource.

The drinking water we provide to 2.7 million customers in four Bay Area counties comes from a variety of protected and carefully managed sources. Although the largest percentage of our water comes from snowmelt in the Sierra Nevada, an important part of our water supply comes from rainfall collecting in East Bay and Peninsula reservoirs and filtering into the groundwater aquifer. We serve an ever-changing blend of these different sources to our customers.

By relying on multiple sources of water supply, we help protect our customers from potential disruptions in water supply from emergencies or natural disasters. A diverse mix of water sources also helps us be more resilient to long-term water vulnerabilities such as global climate change, regulatory changes that reduce the amount of water we can use from creeks and rivers, and population growth.