Preheat oven to 350 degrees Fahrenheit.
Grease and flour a loaf pan.
In a large bowl, mix together flours, sugar, soda, baking powder, salt, and all the spices.
Next, in a small bowl, stir together pumpkin, oil, syrup, and water.
Add the wet mixture to the dry mixture, combining until everything is just moistened and forms a thick batter.
Fold in chopped nuts.
Pour the batter into the prepared loaf pan and place in the center rack of the oven.
Bake for 45-50 minutes, or until a toothpick inserted in the center comes out clean.
Place on a wire rack and let cool for 10-15 minutes.
Using a butter knife or flat spatula, gently loosen the bread from the sides of the pan, and tip it out.
Set the loaf on the wire rack to finish cooling.