Brown meat under broiler on both sides. Combine water, ketchup, onions, worcestershire sauce, chili powder, vinegar, 1 ts salt, paprika, and red pepper. Pour over beef in roasting pan. Bake, covered, for 4 - 5 hours at 325 deg f. Check to see if done after 3 1/2 hours. Bake only until meat is tender. Check occassionaly to see that liquid is still there, adding if necessary. Serves about 15 people.