Wash roast off well and put in crock pot. Open mushroom soup and mix with about 4 tablespoons of water and pour over roast. Open packet of dried onion soup and sprinkle over roast. Add 1 1/2 cups water and salt and pepper. Let cook about 2 hours and then add sliced carrots and potatoes. Let cook about another 1 1/2 hours or until roast is tender. Serves 5 to 6 people.