Originally Posted by PaulRivers

Let's break down all these things that could "leak" into your water:
- Plastic water bottle - water contaminated with plastic
- Metal water bottle - water contaminated with metal
- Copper water pipes to you house - water contaminated with copper
- Plastic water pipes to your house - water contaminated with plastic
- Buy water in plastic bottles - water contaminated with plastic
- Water treatment plant - who knows exactly what they put in the water or fail to treat in the water
- Water that's not rainwater in general - could be contaminated with any number of things

Thing is the water you're drinking sits in some sort of container (pipes, water tower, etc) before it comes out of your tap. I don't personally think that changing from a plastic water bottle to a metal water bottle is going to make much of a difference, and every single way we have to hold water in a container has someone saying it's bad for you.

Except glass maybe? Lol, it would be pretty funny to see someone trying to use a glass water bottle on their bike.