How Does a Water Tower Create Pressure?
A water tower produces pressure with height alone. Every ten metres of elevation adds roughly one bar at the tap below, so a tank standing forty metres above a town delivers about four bar to the network without a pump running. The tower is filled slowly overnight when demand and electricity prices are low, then drains by gravity through the following day.
That single mechanism explains what a utility is most often asked about. It is why pressure holds during a power cut, why the tower is on the highest ground rather than beside the treatment works, and why a tower that looks permanently full is in fact cycling every day. What belongs in the file rather than the frames is network-security material: reservoir access points, valve locations, and storage volumes at named sites are details a utility should keep out of public content.
This template covers the mechanism in six scenes: two on how height alone becomes pressure at a tap, one on the overnight fill and daytime draw cycle, one on why the tower keeps supply running when pumps stop, one on what happens during a demand peak, and one on why some networks use pumps and pressure vessels instead.

