Expensive. Unsafe. Irresponsible.


“The Nature Conservancy urges a No Vote on Prop I to protect the city’s essential wastewater infrastructure and protect residents from climate change and the unnecessary waste of their taxpayer dollars.”

— Mike Sweeney

Executive Director, The Nature Conservancy, California

Changes to the Great Highway required by PROPOSITION I put Ocean Beach at risk of a major sewage catastrophe.


Proposition I blocks the City’s plan to close a short section of the Great Highway to protect the Oceanside Wastewater Treatment Plant at Ocean Beach from coastal erosion and threats to its sewage infrastructure. If that infrastructure fails, Ocean Beach is at risk of a major sewage spill.


Proposition I forces the City to overturn the Ocean Beach Climate Change Adaptation Project, a multi-agency plan developed over the past 10 years.


Proposition I puts San Francisco taxpayers on the hook for at least $80 million to develop a new climate plan to stop the coastal erosion and protect the wastewater treatment plan.

Read the Fact Sheet on Prop I here:

Join these environmental and community organizations and elected leaders opposing Proposition I.

  • The Nature Conservancy

  • Sierra Club

  • League of Conservation Voters 

  • Surfrider Foundation

  • Affordable Housing Alliance

  • Alice B. Toklas LGBTQ

  • Democratic Club

  • Bay Area Reporter

  • Bernal Heights Democratic Club

  • Community Spaces SF

  • Eastern Neighborhoods

  • Democratic Club

  • Great Highway Park Initiative

  • Greenbelt Alliance

  • GrowSF

  • Harvey Milk LGBTQ Democratic Club

  • Housing Action Coalition

  • KidSafe SF

  • Livable City

  • Mothers Out Front

  • Northern Neighbors

  • Potrero Hill Democratic Club

  • San Francisco Bicycle Coalition

  • San Francisco Chronicle

  • San Francisco Democratic Party

  • San Francisco League of

  • Conservation Voters

  • San Francisco League of

  • Pissed Off Voters

  • San Francisco Marin Medical Society

  • San Francisco Parent Action

  • San Francisco Women’s

  • Political Committee

  • San Francisco Young Democrats

  • SF YIMBY

  • Sierra Club

  • Southside Forward

  • SPUR

  • Streets for People

  • United Democratic Club

  • Urban Environmentalists

  • WalkSF

Environmental & Community Organizations

Elected Leaders

  • Senator Scott Wiener

  • Mayor London Breed

  • Assemblymember Matt Haney

  • Supervisor Gordon Mar

  • Supervisor Dean Preston

  • Supervisor Matt Dorsey

  • Supervisor Myrna Melgar

  • Supervisor Rafael Mandelman

  • Supervisor Hillary Ronen