No permanent water supply shall be provided to any building by any public utility or water district where which system has not been installed?

No permanent water supply shall be provided to any building by any public utility or water district where which system has not been installed?

• A. Exterior piping
• B. Interior plumbing system
• C. Water heater
• D. Pressure reducing valve

Answer: (B)

A building must have a complete interior plumbing system installed before a public utility will provide a permanent water service. This ensures there is a full, testable path inside the structure for potable water to reach all fixtures and for the utility to place proper control measures, such as shutoffs, within the building. Without interior piping and fixtures connected to the service, there’s nothing to supply or test, and the risk of uncontrolled connections or contamination is increased. Exterior piping alone doesn’t establish a usable distribution within the building, and while components like a water heater or a pressure reducing valve are important, they do not alone satisfy the requirement for a functioning interior system.

A building must have a complete interior plumbing system installed before a public utility will provide a permanent water service. This ensures there is a full, testable path inside the structure for potable water to reach all fixtures and for the utility to place proper control measures, such as shutoffs, within the building. Without interior piping and fixtures connected to the service, there’s nothing to supply or test, and the risk of uncontrolled connections or contamination is increased. Exterior piping alone doesn’t establish a usable distribution within the building, and while components like a water heater or a pressure reducing valve are important, they do not alone satisfy the requirement for a functioning interior system.