Your tip this week is to use metal or plastic re-usable water bottles. I just re-use a glass bottle. Yes it’s heavier, doesn’t have that neat top that you twist or whatever to drink, and it can break into dangerous shards — but it doesn’t cost much to give a new life to to a glass bottle that originally held apple juice and use it as a water bottle, and there’s less concern about stuff in the material of the bottle leaching or otherwise finding its way into the water. And it has the advantage over steel that you can easily gauge how much water is left inside. (Easier to see dirt too, for cleaning.)