A school, worshiping at the alter of green, installed waterless toilets in the student bathrooms.

Ok, hint number one that this is a bad idea; waterless toilets are obviously not going to work, no matter what the toilet salesman tells you.

Because I guess you can be expected to flush with good intentions.

 The predictable results: an unbearable stench, and rivers of urine to step over.

 Ijits, and a lesson to the rest of us.