It still has the risks of infectious agents, toxic chemicals and radiological hazards. Bottled water sources are vulnerable to agricultural or industrial pollutants. Packaging may be a potential health risk.
Plastic bottles made from polyvinyl chloride (PVC) or polyethylene (PET, HDPE,PE), have the risk of leeching their components into the water when stored at room temperature or above. This risk increase as storage time is extended.
Bottlers are not required to put manufacturing dates on their products. Thus, consumers
cannot determine how long bottled water has been on the supermarket shelves. Bottled
water (with the exception of drinking water for babies) is not sterile, and contains trace
amount of bacteria naturally present, or introduced during processing.