Cheesy Potato Soup

4 medium potatoes, diced

1 large onion
1 quart water
3 stalks celery diced
1/4 Cup butter
3 TBS flour
1/2 cup milk
1 1/2 cups grated yellow cheese
1 tsp salt
1/4 tsp seasoned salt
1/4 tsp paprika
1/8 tsp ground pepper
chopped chives
sour cream
cheese
bacon

Combine potatoes, onion, celery and water in heavy saucepan.  Bring to boil, reduce heat and simmer until tender, about 20 minutes.  In heavy saucepan melt butter; add flour; cook and stir until mixture bubbles.  Remove from heat; stir in milk.  Return to heat; cook and stir until thickened.  Stir mixture slowly into potatoes - don't drain the water; cook and stir until thick.  Add cheese and seasonings.  Serve topped with chopped chives, sour cream, cheese and bacon.