How much water does a VacuFlush toilet use per flush?
A. On average, a VacuFlush toilet flushes with about 1.5 pints* (.8 L) of water. A conventional marine toilet consumes about one gallon (3.8 L) of water per flush. A VacuFlush toilet will greatly extend the use of a holding tank between pump-outs as compared to conventional marine toilets. *VacuFlush toilets use as little as 1 pint (.5 L) of water per flush. Because we recommend adding more water when flushing solids, we conservatively estimate average water use at 1.5 pints.
