Probably never: Water is water. There may be some theory that if in a plastic bottle and exposed to extreme heat then some leaching of chemicals from the plastic bottle could contaminate the water with harmful chemicals?? I invite opinions on this.
Answered 6/22/2017
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
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