You can request water pressure and flow information by submitting a Fire Flow Analysis Request Form. The City of Vacaville’s Utilities Department will conduct a hydraulic modeling analysis at the connection point(s) to determine the available flow and pressure at your project site. This information will be emailed to you in approximately 10 business days. A separate form must be completed for each potential connection point.

See the instructions on the Fire Flow Analysis Request Form for additional information. If you have any questions or require additional information, please contact the Utilities Department at (707) 469-6400 or Utilities email.

As identified in the City’s Water System Master Plan, minimum fire flow requirements for new development are, in general, as follows:

• Single Family Residential, Low Density – 1,500 gallons per minute (gpm)
• Single Family Residential, Low-Medium or Medium Density – 3,000 gpm
  • Low-Medium Density Residential developments may only require 1,500 gpm, if houses are constructed with a minimum eave-to-eave separation of 6 ft.
• Multi-family Residential or Single Family Residential, Medium-High or High Density – 4,500 gpm
• Schools – 3,000 gpm
• Commercial or Industrial – 4,500 gpm

All fire flows are based on a required minimum residual pressure of 20 psi and a maximum pipe velocity of 10 feet per second.

However, the Fire Department is ultimately responsible for determining all actual fire flow requirements according to the development type, building construction, and fire protection mitigation methods.