Re: Not all water is potable water, but only potable water is used for cooling at Dalles.
They COULD use grey water... but:
Depending on the quality of 'grey water' keep in mind that water used for cooling towers will affect the atmosphere in the area if there are bacteria etc. in it. Legionaire's Disease came from a cooling towere that had bad bacteria in the water.
Decades ago I worked at a hotel and the air conditioning used a cooling tower. We put a floating pool chlorinater in it to maintain the correct water chemistry. But yeah Legionaire's Disease was recently on people's minds back then, yet the precautions to prevent it were not all that hard.
I suppose if the grey water is as clean as the tap water, it would work well enough for cooling towers. Properly chlorinated, of course.
Biting the hand that feeds IT
