In a medium saucepan over medium high heat, combine the water, salt, ground black pepper, oregano, basil, onion salt, parsley, garlic powder, Au Juse and salad dressing mix. Stir well and bring just to a boil.
Place roast in a slow cooker and pour mixture over the roast. Cover and cook on low setting for 8 to 10 hours OR high setting for 4 to 6 hours.
Serve on Italian Rolls, with hot peppers and provolone cheese.