Question

There is any legislation or recommendation in a global scale regarding the sanitary practices?
Generally we see specifsc laws of a country or city, but laws or recommendations in a global scalei don't know.

Answer 1

This program comes under the United Nations.
http://www.unhabitat.org/content.asp?typeid=19&catid=270&cid=2386

Answer 2

You can also find some guidelines here.. It's the website of the World Health Organization: http://www.who.int/water_sanitation_health/wastewater/en/