Freshwater flushFlush toilet fed by a small fresh water tank.DefinitionFreshwater flush units and many trailers use a small water tank and pump so the toilet flushes more like a home toilet. They feel familiar to guests and cost more than non-flush standards.Related termsRestroom trailer: Towable multi-stall restroom with sinks and often HVAC.Deluxe unit: Porta potty with upgrades like mirrors and interior light.Recirculating flush: Flush system that recirculates charged tank liquid.Related guidesRestroom Trailer vs Porta Potty: Differences & Cost