The tanks can be carried out in different variants. As a rule, there are the tanks of a Tankrack, a custom, or fresh water tank. 

The tanks are usually made from PE, or alternatively they may be made of copper or stainless steel. 

When waste water tank, there is also the option to run it as a bioreactor. 

Usually the tanks are located directly next to or between the sanitary cabins. 

The filling of the custom, or fresh water tanks, such as the emptying of the waste water tank is which are incorporated outside of the vehicle body via filling and suction boxes.