When designing a town water system, what is the precise calculation used to ensure that the water pressure at the end of the pipe stays high enough during the busiest time of the day?

To keep water pressure high at the end of a pipe during the busiest time of day, engineers use the Bernoulli principle. This is the law that says as water moves through a pipe, its total energy stays the same. The calculation combines three things: elevation, which is the height of the water tank; pressure head, which is the force pushing the water; and velocity head, which is the energy ....