Aww, Johnny drained the water bottle? Oh Christ, the 7/11 is 3.5 hours away. Well, there's always the Shewanee Preserve Mill Pond.
Oh Christ. What is that? FISH? Fish droppings in my water?
NO panic. Uncle Nick is here. Really. Put the pond water in the empty water bottle and leave in full sun for over six hours. (Obviously, then, cool it).
But by then, the UV rays will have killed every single bacteria, virus and parasite in the water. Believe it or not, brown or not, it will be entirely safe to drink with no fear of any harmful water-borne illnesses.
This is Uncle Nick checking out.