A multi-lavatory system is preassembled to facilitate efficient installation with a minimum of connection points. The multi-lavatory system is connected to a single fluid supply line and a single drainage line. A fluid supply network conducts water from the single fluid supply line to a plurality of lavatory stations. Similarly, a drainage network conducts waste water from the plurality of lavatory stations to the single drainage line. Additionally, the multi-lavatory system includes a unitary lavatory subassembly having interconnected but spaced sink regions. Each sink region is disposed in one of the lavatory stations and is bounded at a frontal area by an upstanding contoured wall that creates an independent washing zone. This facilitates efficient production of the unitary lavatory subassembly and overall multi-lavatory system while providing each user of the system with a sense of privacy in their own independent washing zone.