This may sound like an odd question so I'll give a little background first. I'm a little OCD about flushing my tanks, ok ok, I'm A LOT OCD about flushing my tanks. I've been in a couple campers that...
Sounds like lots of people use lots of water trying to clean a tank that will still be dirty. The receiving waste system is being taxed, along with the excess water usage each time someone over flushes a holding tank.