Good cleaning habit in community can be cultivated elsewhere but not in Thailand, why?

I heard that the Ganges (or Ganga คงคา) river in India is self-cleaning even with 'just about' everything (including not quite burnt out bodies) thrown in it. What sort of river ecology is in the Ganges. Can someone please take a bottle of water from there and have it analysed (for safety sake) then pour into any canal in BKK? See if The Ganges EM works here.

"ทุกอย่างที่กินเป็นอาหารหากเหลือ จะต้องล้างลงท่อน้ำที่อ่างล้างจาน ก่อนจะนำเข้าเครื่องล้าง..." The must have a 'flushing' drain system otherwise solid food will stay in the the drain and either get eaten by .... or rot and smell... in the drain system. Interesting ;-)