Because of elevation differences, the water pressure in the second floor of your house is lower than it is in the first floor. For tall buildings this pressure difference can become unacceptable. Discuss possible ways to design the water distribution system in very tall buildings so that the hydrostatic pressure difference is within acceptable limits.

Water pressure is affected by the height or elevation. The deeper or higher the water, the more pressure it exerts, something referred to as hydrostatic pressure. In buildings, this means that the water pressure on the first floor would be higher than on subsequent floors, leading to a decrease in pressure as one ascends a building. The effect is more pronounced in tall buildings where pressure at the top might fall below acceptable levels.

The challenge then is to maintain an even water pressure across all floors. There are several methods that could be used to solve this problem:\n1. Use of pressure boosting systems: these would boost the pressure of the water on the higher floors to ensure that it matches the pressure at the bottom floors.\n2. Installation of water tanks at different levels: this would ensure that the water supplied to each set of floors comes from a nearby source, avoiding the issue of insufficient pressure.\n3. Water towers: if the building has the advantage of nearby high ground, a water tower could be installed on a higher location. This would naturally pressurize the water, allowing it to flow to all parts of the building with relatively equal pressure.

The selection of the best solution would depend on several factors such as the utility costs, affordability, ease of installation and maintenance, among other factors. That would require a detailed analysis of budget, resources, and the specific needs of the building.