Think that's insane? What about this:
"Some upper-caste communities are not happy having lavatories in their homes because tradition dictates that such an arrangement is unclean.
Mr Monda said: “People do not want to go to the toilet in the home where they cook food. And many old people enjoy the opportunity to go for a walk. It gives them the opportunity to check on their fields.” "
This seems insane.
Indoor plumming is perhaps somewhat involved but what about outdoor lavatories?
Maybe my image of rural Britain having outhouses everywhere is mistaken or occurred at a latter stage of development...