[ahayes]

I think one of the papers says the water is pure enough to be released into the city sewage system. That would indicate to me that it would be waste water. While not toxic, by no means potable.

A paper I somehow managed to navigate to said that when the water is boiled off it carries volatiles such as ammonia with it. So it's free of microorganisms, but you wouldn't want to drink it!

[Techster]

Some of the volatiles probably can be captured. The water most likely can be treated easier than river water.