California Code, Government Code - GOV § 53750.5

(1) Fire service is a different and distinct service from water service, which is one of several other property-related services that aids in the provision of fire service provided to properties.

(2) Hydrants are part of the system of public improvements described in subdivision (n) of Section 53750.

(3) Hydrants are generally designed, installed, and used to provide an immediately available water service to aid in extinguishing fires that threaten property served by a water service provider, and are generally not designed or installed to provide water service to aid in extinguishing fires that threaten property not served by a water service provider or wildfires.  Hydrants are also used by a water service provider for water system operations and maintenance.

(4) Hydrants are generally located in proximity to properties served by a water service provider to facilitate water service to those properties.  Hydrants and the water distributed through them have a direct relationship to property ownership because hydrants are generally sized based upon property use and then are installed when parcels are developed or connected to a water system.

(5) Hydrants and the water distributed through them are not available to the public at large in substantially the same manner as they are to property owners served by a water service provider because hydrants are designed, installed, and used to serve properties receiving water service, and the public at large does not generally have access to water through those hydrants.  Incidental or other de minimis use of hydrants and the water distributed through them for other purposes does not change their essential character as a property-related service.

(6) Hydrants and the water distributed through them are part of the property-related water service provided to all property owners served by a water service provider.  Through hydrants, water is immediately available to those properties to aid in extinguishing a fire that directly threatens them.  The cost associated with this aspect of water service is proportionately allocable among properties that may receive a reasonably similar level of service from the immediate availability of water to aid in extinguishing fires that directly or indirectly threaten those properties.

(7) Property-related water service costs may include, but are not limited to, any costs associated with constructing, maintaining, repairing, upgrading, and replacing hydrants, and costs associated with obtaining, treating, and distributing adequate volumes of water to meet the water demands of properties served by the water service provider, including water supplied for firefighting purposes.  The fees or charges related to those costs are imposed upon a parcel or person as an incident of property ownership.