'Cities in the experiment ranged from 17,000 to 600,000 in population, but Field declined to identify them, saying that could harm her relationship with the sewage plant operators.'

So they already know that it would piss people off,but did it anyway.Don`t you have to have permission to just go waltzing around in a wastewater treatment plant?I used to fill vending machines in the Cleveland Water Pollution Control plant and had to show ID and tell them why I was there every single time.