Chemists developed two sustainable plastic alternatives to polyethylene, derived from plants, that can be recycled with a recovery rate of more than 96%, as low-waste, environmentally friendly replacements to conventional fossil fuel-based plastics. (Nature, 17 Feb)

[u/mvea]

https://academictimes.com/new-plant-based-plastics-can-be-chemically-recycled-with-near-perfect-efficiency/

[u/rcn2]

"They", meaning who? The amounts present in your bottles and food are not enough to do harm. It's usually fear-mongering from the same people that are 'pro-health' in the anti-vaccine, anti-msg, anti-chemical crowd.

You can use your plastic bottle.

https://www.fda.gov/food/food-additives-petitions/bisphenol-bpa-use-food-contact-application