What is "wastewater." don't you mean water that has simply been used and returned again to the environment? ANY water that is used it recycled naturally in nature. All the water on earth today has been water, ever since the earth was created.
IF we really wanted to save POTABLE water we should build far more holding dams on our non navigatible waterways, to prevent the vast majority of fresh what from going into the saltwater oceans. If we did that, we could cut our use of imported oil by producing more of our hydroelectricity
Anybody who is not satisfied with their NEW toilets can easily modify them to work properly. All one need do is extent the length of the overflow tube two inches and adjust the water level up two inches, and they will finally work well
It's more like a shortage of water. In addition, it takes more energy (and fresh water) to treat high volume of sewage than a lower volume.
In many parts of the world, there is a shortage of water, including some parts of the US and Middle East.
Another option is to recycle the wastewater directly. (It is already recycled, with rain.) In CA, they're dumping the cleaned wastewater back into the water table. In the space shuttle and space station, let's just say yesterday's pee is today's coffee. There's a yuck factor with recycling waste water, but it works. And in Japan, they are really efficient, even recylcing wash water (from clothes washers) to flush toilets and water grass and gardens.