I'd hate to be a Hull Tech on that thing.
We went throught the same things when they first started installing the blackwater systems on the ships. They were constantly crapping out, pardon the pun and the hull techs were constantly taking the sytem apart which was a pretty shitty job.
I guess I'm not ecologically sensative but I'd still rather shit in the ocean than suffer a complete colon meltdown because some twit decided to save the planet.