Ah, but one of the things I like about India is its honest rawness about humanity. Fact is, people die and decay. It shocks us to look at that because we live like the packaged meat under supermarket cellophane, totally removed from what really goes on in life behind the curtain.
People have died and decayed in rivers, underground, etc., for thousands of years. We like to believe when we take a dump or piss, it doesn't somehow end up in our drinking supply. Dream on.
Which isn't to say there aren't far more sanitary ways to handle all this by any means. But people are way too squeamish about the realities of human existence when confronted with it. It's hard enough to get people to talk about death, as a natural part of life, without it being taboo.