Preheat the oven to 350 degrees F (175 degrees C). Grease and flour three 9x5-inch loaf pans (or three empty 16-ounce coffee tins).
Combine sugar, pumpkin, eggs, oil, and water in a large bowl. Beat with an electric mixer until smooth. Blend in flour, cinnamon, nutmeg, baking soda, and salt.
Fold in chocolate chips and nuts.
Evenly divide batter between the prepared pans; they should be 1/2 to 3/4 full.
Bake in the preheated oven until a knife inserted into the center comes out clean, about 1 hour.
Remove from the oven and let cool on wire racks before removing from the pans.