If you live in a humid environment, or are new to pizza making, start with 1¾ cups of water. The dough may feel dry immediately after mixing, but as the dough rises, the flour will continue to hydrate. When you turn out the dough to portion it, it will feel much wetter and stickier. If you are an experienced pizza maker, and don't mind working with a higher hydration dough, you can use 2 cups of water to start.