The water module is part of the kitchen set and serves for food preparation or basic hygiene. It can be easily inserted into the Nestbox car interior anchored to the body. The module consists of an aluminum structure with stainless steel parts and birch plywood covered with HPL surface. It also includes a folding sink without a drain, plastic canisters, a water suction pump, a plastic drawer for storing items, a practical bag for storing hygiene items, and a 150 cm long shower hose or sink faucet, which are optionally attached to a quick-release coupling. Operation is controlled by a tap.