Which brickmaking process uses the least amount of water?

The dry-press process is the brickmaking method that uses the least amount of water. In this process, clays with very low plasticity are utilized, and only a minimum amount of water is added before the material is placed into steel molds and subjected to high pressure, reaching up to 1,500 pounds per square inch.1

In contrast, other methods require significantly more water:
* Soft-mud process: This older method uses much more water to create a mix that is placed into wooden molds.1
* Stiff-mud process: This process requires enough water to render the clay plastic so that it can be extruded through a die.1