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Isn't that pretty dependent on where you live? If you are in a newer house I doubt it would be an issue, since you have a personal water heater that gets cycled through pretty regularly.

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If the water heater uses copper pipes, the copper still gets into the water. And even with plastic pipes the trace amount of plastic may still end in the water and nobody knows if drinking such water for, say, 40 years is safe.

So do not use hot water for cooking/drinking.

You can buy food supplements containing copper explicitly, so I wonder how bad that could be.

Copper containers are actually great at killing bacteria.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3312355/

But high levels can cause health problems, including kidney damage and possibly cancer.

https://www.canada.ca/en/health-canada/programs/consultation...

Between dying of dysentery and risking long term health issues it's a simple choice.

But unless your doctor specifically tells you to add more copper, you shouldn't be going out of your way to get it.

Pex is thermo stable.

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