> Even if you poop in your fancy bungalow toilet, it does end up in the rivers, along with detergent and toxic toilet cleaners.

Wastewater should be treated. And at least if you concentrate all the waste into one place, you greatly reduce the spread of infectious diseases spread by untreated waste.

Also, your children tend not to be stunted. http://www.huffingtonpost.com/sanjay-wijesekera/why-are-indi...