Ship heads flush using saltwater firemain so there is no reason to worry about the amount of water used. However, you may be on the right track here. Did they screw things up trying out some new system when the old system worked well enough? Of all ships I was on (and a couple over 40 years old), we never had every head on the ship go down at the same time.
I always figured those carriers were full of crap...
Gator these type flush with potable water according too the article. A completely different system than even the CHT system in the early 80’s. Using your fresh water on a ship for flushing sounds like a very stupid idea especially when it’s a steaming ship which a nuke carrier is.