Abundance is so relative. I look forward to seeing your answer to @stellabelle.

A few years ago I saw a project that introduced a special straw with a filter in it, so that water not fit to drink, could actually be drunk with the use of this straw.

Imagine how that could benefit people in regions of the world where there is no fresh drinkable water anymore. Of course in the longer term the reason why the water had been contaminated in the first place still needs to be addressed.