In AC 3 Tier(During my trip on 9th Oct 2013):
Toilet:
Cleanliness: Average, Satisfactory.
Water:
Water tank became empty before we enter an Serampore. On the next day, water was not filled at Muzaffarpur station...
more... due to some unknown reason.
Cleanliness:
Almost clean. But, air freshner was not spreaded in AC compartments.