>>20117992>Never seen anything like that in the U.S.You will have seen water towers that provide the city/town with hydrostatic pressure, explained here:
https://www.waterworld.com/drinking-water/distribution/article/14287229/what-is-the-purpose-of-water-towersBrazil anon's basically doing the same thing but per house. I saw the same thing done in Bali, and they said it was to smooth out the flow rate.