Combine the water, potatoes, celery, onion, and garlic in a large saucepan. Bring to a boil. Simmer until the vegetable are tender.Stir in the salt, pepper, and two cans of soup. Add the ham and cheddar cheese and stir until melted and smooth. Add the potato flakes to thicken it slightly and to add a bit more potato taste. Serve hot. Top with bacon bits if desired. Makes 8 servings.