Most bottled water contains no chlorine although some brands of bottled water may contain around 4.0 mg/l of chlorine.
However tap water contains more chlorine than bottled water that contains chlorine.
Bottled water is better to drink than tap water especially if your tap water contains chlorine and is coming from a city water supply.
However if your tap water is coming from a private water well that is clean and healthy without bacteria then the tap water from the well would be better to drink as it contains more healthy minerals that are needed for optimal health.
But if your tap water is city water with other chemicals such as chlorine then the bottled water would be the better water to drink.
Most filtered water and bottled water does not have any chlorine in it as the chlorine is removed during the filtering and purification process.
Bottled water goes through filtering and other processes that remove chemicals and chlorine from the water before it is bottled.
Some bottled water comes from water wells and other bottled water comes from city water supplies that is filtered before being bottled.