I have had this photo hanging around for a long time. I did not delete it or file it as it was for use in a blog post, but I couldn't work out how to use it. In fact I did not understand the photo. My initial reaction was the black person's drinking water was the waste water from the white person's drain, but it is not so. I don't have a great knowledge of plumbing, but to me it looks like the waste pipe from the black person's drinking fountain runs into the white person's drain. Quell horreur, white and black people waste water mixing together.
Of course basic hygiene was observed, with white and black drinking fountains kept apart.
In Australia we did not have any sort of discrimination like that. Our blacks did not have drinking fountains and they certainly did not use ours, so there was no issue. I'm sure there was a billabong nearby for them to have a drink from, possibly.