Preheat oven to 350℉. Spray loaf pans with non stick cooking spray and set on baking sheets.
In a large bowl, combine pumpkin, eggs, vegetable oil, water, and sugar. In a separate large bowl, combine dry ingredients and orange zest. Add wet ingredients to dry ingredients and mix just until combined. Do not over mix. Optional: : Add mini chocolate chips or pecans to batter.
Divide pumpkin bread batter evenly between loaf pans and bake for about one hour. Let cool and slice.