Mav, I'm with you on that subject: We need to compel ourselves to put in plumbing, however much it costs, that separates 'white', 'gray' and 'black' water. As it stands (or flows) now, our best water is going into the same sewage systems that treat our most polluted water.If we had had the forethought, when indoor plumbing was first installed- not really so many years ago- to separate the systems, we would readily see the sense of it. And it's not too late.
We have a lot to answer for to the next generations.
Ebbie