In a large saucepan, heat water just until it comes to a rapid boil. Remove from heat and drop in the tea bags. Cover and let steep for about 20 minutes.
In a 2 quart pitcher, combine the steeped tea, discarding the tea bags, and the sugar or Splenda. Stir until dissolved. Continue to cool to room temperature. Stir in lemon and orange juice. Refrigerate until chilled. Serve over ice.
I find it best not to add the citrus until the tea is completely cooled. Even better to chill the cooled citrus tea, as recommended, to let the flavors meld. Also, cooling too fast brings out the tannin, causing cloudy tea. Should any tea become cloudy, just add a little boiling water to clear it up.