Wastewater from washing machine and wash basin is diverted to a filtering can from where it goes to the storage tank. the filtered water is used for gardening and car washing etc.
Compost latrine. A perfect example of eco sanitation. The pot has two chambers - one for the shit and other for the toilet. Shit separated from toilet is collected in a can below. The shit is then dumped in a compost bin. After a few days the human shit becomes rich fertilizer.
Crores have been spent on the cleaning of the Yamuna in Delhi. The result is, it has become ever more dirty and filthy. A man defecating in the Yamuna bank.
Despite crores spent, all the stretches of Yamuna are dirtier today. The Delhi stretch stinks to heaven today. People defecating in the open on the banks of Yamuna.