In a 4 qt. pot combine water, celery, macaroni, onion and seasoning. Heat to boiling, stirring occasionally. Cover, reduce heat & simmer until macaroni is tender- about 12 minutes. Stir in milk and grated cheese until cheese is melted. Do not boil. If desired, season to taste with additional salt & pepper. Turn into dish sprinkle with paprika in center and parsley around the edge. Serves 4.