Poop town. The world has a known sewer system way in the back of the history, about 5,000 years b.c.
The World cannot be considered modern without a sewer system. Plumbing engineer's mind. So, our question is how to create a new city with buildings, streets, shops to be one of the most expensive in the world and not having developed a sewer system. More than that, the tallest building in the World, has no sewer system. Say what? With apartments, penthouses with millions to be paid to have it with no sewer system at the basement, underground. Oh my, my.