Do you know that Aluminium and Plastic cookwares/utensils/containers are a slow poison ? 

Yes, it is. That's why prisoners under British Kingdom were offered food in aluminium utensils so that could dead early.
Similarly, Plastic is another poison, it is harful all the times even if er are using high or best quality of it.
 
So, Stop Storing water into plastic Bottles
 
People are using this because it's available at low prices an thus they invite a series of Diseases with this.
 
Yoga Sadhna Kender Regd, Malerkotla is running a drive named Food-Medicine where people are made aware of using Iron Cookwares or other steel (iron) utensils instead of the Aluminium and Plastic utensils.