Peach Lemonade

water 2 cups coarsely chopped peaches (approx. 3 to 4 peaches) 3/4 cup sugar 1 cup fresh lemon juice (juice of approx. 6 to 8 lemons) 1/4 to 1/2 cup additional water 4 cups ice 1 peach cut into 8 wedges, for garnish