Preheat oven to 350°. In a large bowl, combine the flour, sugar, baking soda and salt. In another bowl, combine the eggs, bananas, oil and water. Stir into the dry ingredients just until moistened. Fold in raspberries and walnuts.
Pour into two greased 8x4-in. loaf pans. Bake for 55-65 minutes or until a toothpick inserted in the center comes out clean. Cool for 10 minutes before removing from pans to wire racks.
If using frozen raspberries, use without thawing to avoid discoloring the batter.