Preheat oven to 350 degrees
Grease loaf pan.
In a large bowl, combine flour, sugar, baking soda, baking powder and salt.
In a separate bowl, mix together orange juice, egg, water, butter and orange zest.
Stir wet ingredients into dry ingredients just until combined.
Fold in blueberries.
Pour into greased pan.
Bake on center rack of oven for approx. 1-hour or until toothpick inserted in center comes out clean.
Cool in pan for 10 minutes, then remove to cooling rack to finish cooling.