Fire Flow Testing


The City of Hayward regularly performs fire hydrant flow tests throughout the City to provide estimates of water system flow and pressure, also known as fire flow data. This data may be required for development projects, fire suppression system designs, and irrigation system designs. 


Find Existing Fire Flow Data

To view available fire flow data, please visit our Fire Hydrant Flow Test Map to locate existing data near your project location.

To navigate the map:

  • Enter the project address in the upper left search bar
  • Locate the blue circles at or near your project location, and click on them to view fire flow test information
  • If there are no blue circles at or near your project location, or if data is more than five years old, you may need to request new fire flow data


Request New Fire Flow Data

If there is no existing fire flow data, or if you need to request a new fire flow test, download the Fire Flow Test Application and follow the instructions on the application.


Contact Us

If you have questions regarding fire flow data or need assistance requesting a new fire flow test, contact Michelle Tran, Development Review Specialist, at or (510) 583-4722.