I don't think it is this water that is going to be fed directly to homes. More likely there is going to be systems of heat exchangers. They mention they are re

I don't think it is this water that is going to be fed directly to homes. More likely there is going to be systems of heat exchangers. They mention they are recovering heat from waste water. Obviously, they aren't pumping waste water into the system but rather use heat exchange to extract energy.