>>Is this what mean when they say brown sludge?
No. Sludge is what you get after extracting most of the water from sewage. The water they are using for snow (and to irrigate most commercial properties and golf courses in my part of the country) is the water that is extracted and then treated. We used to dump that water into the river, but environmentalists said that it harmed the rivers, so we started putting it on grass. Now they say that it harms grass. People need to just stop peeing and pooping.
I wonder what environmentalists do when they #2?? Do they store it in a bag in the kitchen? Do they eat it? Do they carefully separate it from the toilet paper and dry the TP for reuse?
Or do they just flush like the rest of us? Hypocrites!
I thought it was Tofu.