Integrated Water Master Plan (IWMP)

Project Description

Exploring Opportunities to Increase Our Local Water Supply Resiliency

To enhance our community’s water supply resiliency, Petaluma is embarking on a study called the Integrated Water Master Plan (IWMP). This plan will identify opportunities to increase water supplies locally, making us more resilient to water supply shortages due to climate change and other natural disasters such as earthquakes.  The IWMP will also help the City identify, screen, and analyze water supply alternatives to help address any future water supply gaps. Water supply project options explored through this process will include:

  • Recycled Water
    • Urban Recycled Water Program Expansion (within the City’s potable water service area)
    • Agricultural and Vineyard Recycled Water Program Expansion (outside the City’s potable water service area)
    • Recycled Water Storage Expansion
    • Other options 
  • Groundwater
    • Groundwater banking 
    • Regional groundwater banking
    • Groundwater recharge with stormwater
  • Brackish Desalination
    • Regional brackish water desalination 
  • Stormwater
    • Stormwater capture, storage, and treatment 


Petaluma will hold community meetings to update the public and give the community opportunities to ask questions, make comments, and offer their ideas on the IWMP over the next year. 

The community meeting schedule will be updated here once meetings are scheduled. If you would like to submit a question about the IWMP, please contact Project Manager Erica Jacobs at [email protected].

Project Location

As this project is designed to conceptually develop water supply and storage alternatives with robust public engagement, there is no physical location.

Timeline/Project Status

The project is in its initial conceptual and data collection phase. City Staff will begin a preliminary data gathering process with current recycled water customers to gain insight into their usage and potential for expansion. Following that process, the City will host a series of public meetings where the project will be introduced, and public feedback will be received. Currently, the project is slated to be completed in 2024.


Project Cost: $777,000

Funded by water and wastewater enterprise funds. $226,000 in funding received through the State Water Resources Control Board Water Recycling Funding Program to help offset the cost of planning for the recycled water facilities portion of the IWMP.

Public Participation

As we begin the feedback and data collection solicitation process with the public, we invite anyone who is interested to join our mailing list by emailing [email protected] or fill out the form to the right.

Contact Us

For more information on the project, please contact City of Petaluma Public Works at (707) 778-4303 or email [email protected]

Community Feedback

Please sign up below to receive project updates and comment to let us know what you think. Community feedback will be reviewed and considered by City staff.

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