The best part is that it doesn't connect to a sewer system because princelings aren't interested in competent city planning. Every morning a batallion of honey wagons remove the previous day's waste from holding tanks.
From 2009. A year before Burj Khalifa opened. It is truly legendary.
I was amazed when I noticed enclaves of rich govt workers in northern VA that have stupid expensive communities but are all on septic tanks and well water.
Again though this depends on where you live. In some places filter raw sewage through 2 cm of dirt and it is safe to drink - in other places raw sewage will travel miles. Likewise some places have plenty of safe water, other places have little water and still other places the water isn't safe to drink.