Preheat the oven to 350°F. Spray an 8x5-inch loaf pan with nonstick spray.
In a medium bowl, whisk together all of the dry ingredients (flour through baking powder). In a separate bowl, whisk together sugar, eggs and oil. Pour the wet ingredients into the dry ingredients and whisk them together until combined. Add the pumpkin and water and whisk the ingredients again until all is combined and smooth.
Pour the batter into the prepared pan and bake for 65 to 75 minutes, watching closely and testing with a toothpick inserted into the center to make sure it comes out clean before taking it out of the oven. Touching the bread in the center and making sure it doesn't feel soft or raw- will also help you to know when it's done.