At the other end of the spectrum, there is antibacterial soap poisoning the water http://www.seeker.com/are-anti-bacterial-soaps-poisoning-our...

and created many more issues http://www.bbc.com/news/health-32543176

Women do not want to public display sanitary pads as here, there is nothing about "superstitions about cleanness and evil spirits". If you want to see superstitions look at all apartments in developed US/Canada where floor no. 13 is missing, and number 666 is found offensive by government https://www.thestar.com/news/gta/2016/05/05/etobicoke-mans-v...

And deads are not buried but cremated on river beds. Burying practice also cause pollution FYI http://www.utne.com/environment/arsenic-contamination-ze0z13... http://www.disabled-world.com/health/cemetery.php

BTW, you are right about open defecation in urban area. That needs to be changed.