The bottle is fine, the water is the issue, I've carried my metal water bottle just fine, but the plastic water bottle they gave me on the plane I had to toss when I got off through customs
I was flying home with a snow globe souvenir one day. TSA had to huddle with their team and a calculator to figure out the volume of a sphere on the spot. I don't know if the volume ended up being under the limit or they just gave up.