2.5 storeys maximum due to water pressure

In the city of Wayne in New Jersey, USA, buildings may only have a maximum of 2.5 storeys due to water pressure limitations.

By the way, the main reason for the measure is that the water pressure in the entire municipality cannot otherwise be guaranteed.

Source: https://www.tapinto.net/towns/wayne/sections/government/articles/wayne-looks-to-limit-building-heights-in-town-because-of-water-capacity-concerns

Photo: https://www.pexels.com/de-de/foto/holz-blau-fahnen-haus-5361754/