The polemic about how much is safe to drink bottled water still in progress and while some claim that there is no danger, others say the opposite. If you are in doubt about it, will help you mark that is located on the bottom of the bottle. Yes, at the bottom of the bottle mark is attached to reveal what kind of plastic is used in its development. You’ve probably noticed them, but you have no idea how important they are. It is a triangle where they are 3, sometimes 4 letters.
So, if at the bottom of the bottle is a label of PET (or PETE), throw it in the trash. It is a type of plastic that is suspected of releasing carcinogens and for releasing of hazardous heavy metals antimony and substance EPA, which can disrupt the balance of hormones.
If you find at the bottom of the bottle label PVC or 3V, do the same.
Are you looking for safe packaging, look for those that at the bottom it says PP because it is a plastic which scientists believe does not release dangerous compounds. PP plastic products are typically transparent or white and are commonly used for packaging of yogurts, juices and syrups.
As for security, HDPE plastic is considered to be the safest but is not produced bottles from this plastic, only shopping bags.
Avoid disposable plastic cups (for example from coffee machines), because they are made from PS plastic who releases toxic compound styrene.
Worst one for food products is PC plastic because it contains BPA, an endocrine disruptor. Often used as sports bottles and food containers
So when looking for the least toxic plastic, look for HDPE and PP. Avoid packaging labeled PETE, PVC, PS and PC.