There has been a big controversy the past couple of years about water bottles.  It is wasteful to use single use plastic water bottles.  To remedy the problem of excess garbage (since only about 23% of the drink bottles used each year are recycled) many people began using reusable containers such as Nalgene and SIGG bottles.  It later came out that these bottles released the chemical BPA into the water. Even aluminum bottles leeched aluminum into the water. It seemed like there was no safe solution.
Having read a lot about …