The Petaluma Valley Groundwater Sustainability Agency (GSA) is a public agency formed to sustainably manage groundwater in the Petaluma Valley groundwater basin. The agency was formed in June 2017 and has a Board of Directors, an Advisory Committee and an Administrator.

Agendas & Meeting Calendar

Find out when and where the Board of Directors and the Advisory Committee are meeting next.

Groundwater Sustainability Plan

Take a look at the final 20-year plan for groundwater sustainability in the Petaluma Valley subbasin!


Find your local groundwater basin and review and update your water use information on the GUIDE page.

Groundwater Sustainability Fee

Learn more about the recently adopted fee and find answers to frequently asked questions.

Voluntary Well Monitoring Program

LEVEL UP! Now seeking property owners with wells in Petaluma Valley to participate in a local voluntary groundwater well monitoring program. Learn more.

Groundwater Sustainability Plans Approved

On January 26, 2023, the California Department of Water Resources announced its approval of the Groundwater Sustainability Plan. This 20-year plan establishes a standard for sustainability of groundwater management and provides a plan for managing groundwater over a 20-year period. Click here to review the GSP.