Virtually every building in our area of Mexico has a Tinaco or water tank on the roof. Water is pumped up to the Tinaco and gravity feeds the water to your taps. If you want more than a drizzle in your shower, you add a water pressure tank to the system.
Modern tinacos look like this.
You sometimes see a cement tinaco on the roof of an old building. They can be as much as 100 years old.
I wonder if the modern ones will last as long?