We have developed our double-walled tank container for the temporary storage of substances hazardous to water. It can be equipped with films for liquid fertilizers, AdBlue, petrol, biodiesel, diesel or other chemicals on request. In addition to temporary intermediate storage, the container can also be equipped with a pump for active removal from containers or with a dispensing unit and an approved filling station for refuelling vehicles. The double-walled inner tank cover is suspended in the container and can be entered and cleaned. The tank is permanently monitored by a leak detector. However, it has no accreditation and may only be used depending on local conditions and in consultation with the competent authorities.