Steep your chamomile tea for around 10 minutes in the fresh boiled water.
Once the steep time is over, remove the teabag or strain the chamomile loose tea.Add the room temperature or cold water.
Serve over ice. If desired, serve with some fresh mint.
Notes
Personally, I think this iced tea tastes great as is, without sweetening it. But if you prefer sweet tea, you could add some simple syrup or just add your preferred sweetener when the tea is still hot (after removing the tea and before cooling it down with water).