A new scientific report says you should STOP doing that immediately. At least with reusable SOFT plastic water bottles.
YUK! What grows in used soft plastic water bottles
Researchers at the University of Copenhagen analyzed water samples after the water had been in there for 24 hours and found it was LOADED with chemicals. They found hundreds of substances, including “photo-initiators,” which can mess with your hormones and potentially cause cancer.
Never put soft plastic bottle in the dishwasher
Even worse… They took more samples after the bottles had gone through the dishwasher. There they found even MORE chemicals. They say it’s probably because your dishwasher wears down the plastic and allows it to leach more chemicals into your water.
The lead author of the study says he’ll never use plastic water bottles now, and suggests a quality stainless steel bottle instead.