Grease 3 (71/2 x 31/2 x 2 1/4-inch) pans. Preheat oven to 350°. Mix sugar and oil at medium speed on an electric mixer until blended. Add eggs, one at a time. Continue beating until light and fluffy. Beat in pumpkin and water. Sift dry ingredients together, then add to mixture, at low speed. Divide batter into 3 pans. Bake for 75 minutes. Cool 10 minutes and remove from pan.