To make peach syrup, place 1 cup water, sugar and sliced peaches into a medium saucepan; heat on medium-high for 4 to 5 minutes, or until the sugar dissolves. Lower heat and simmer for 30 minutes to allow the peach flavour to infuse the syrup. Cool and purée. Makes 2 cups.
Combine the lemonade concentrate with remaining water and stir in peach purée; add ice and serve. Makes 6-8 servings.