A method for producing a stationary supply station for vehicles, having the steps: - producing a foundation base having ∘ a wastewater line running into the foundation base, ∘ a freshwater line running out of the foundation base, ∘ a connection interface comprising a connection for the wastewater line running into the foundation base and a connection for the freshwater line running out of the foundation base, ∘ a wastewater ground line running out of the foundation base and having a wastewater ground line connection outside of the foundation base, ∘ a freshwater ground line running into the foundation base and having a freshwater ground line connection outside of the foundation base, - placing the produced foundation base in a hole in the ground, - connecting a freshwater ground line opening into the hole in the ground to the freshwater ground line connection, and - connecting a wastewater ground line opening into the hole in the ground to the wastewater ground line connection, wherein - the wastewater line running into the foundation base is connected by means of a shut-off valve to the wastewater ground line running out of the foundation base, wherein the wastewater ground line running out of the foundation base is connected to a vacuum line, and - the wastewater line running into the foundation base opens into an intermediate storage tank (35a, 35b, 35c, 35d) disposed in the foundation base and implemented as a buffer storage for receiving wastewater over a particular period of time or up to a particular fill volume, said wastewater then being able to be discharged from the intermediate storage tank (35a, 35b, 35c, 35d) of the foundation base at a subsequent point in time in a time-limited suctioning process via the vacuum-actuated wastewater ground line, and the connection between the wastewater line running into the foundation base to the wastewater ground line running out of the foundation base takes place by means of a switchable two-way valve switched particularly as a function of a fill level in the intermediate storage tank (35a, 35b, 35c, 35d). - producing a foundation base having ∘ a wastewater line running into the foundation base, ∘ a freshwater line running out of the foundation base, ∘ a connection interface comprising a connection for the wastewater line running into the foundation base and a connection for the freshwater line running out of the foundation base, ∘ a wastewater ground line running out of the foundation base and having a wastewater ground line connection outside of the foundation base, ∘ a freshwater ground line running into the foundation base and having a freshwater ground line connection outside of the foundation base, ∘ a wastewater line running into the foundation base, ∘ a freshwater line running out of the foundation base, ∘ a connection interface comprising a connection for the wastewater line running into the foundation base and a connection for the freshwater line running out of the foundation base, ∘ a wastewater ground line running out of the foundation base and having a wastewater ground line connection outside of the foundation base, ∘ a freshwater ground line running into the foundation base and having a freshwater ground line connection outside of the foundation base, - placing the produced foundation base in a hole in the ground, - connecting a freshwater ground line opening into the hole in the ground to the freshwater ground line connection, and - connecting a wastewater ground line opening into the hole in the ground to the wastewater ground line connection, wherein - the wastewater line running into the foundation base is connected by means of a shut-off valve to the wastewater ground line running out of the foundation base, wherein the wastewater ground line running out of the foundation base is connected to a vacuum line, and - the wastewater line running into the foundation base opens into an intermediate storage tank (35a, 35b, 35c, 35d) disposed in the foundation base and implemented as a buffer storage for receiving wastewater over a particular period of time or up to a particular fill volume, said wastewater then being able to be discharged from the intermediate storage tank (35a, 35b, 35c, 35d) of the foundation base at a subsequent point in time in a time-limited suctioning process via the vacuum-actuated wastewater ground line, and the connection between the wastewater line running into the foundation base to the wastewater ground line running out of the foundation base takes place by means of a switchable two-way valve switched particularly as a function of a fill level in the intermediate storage tank (35a, 35b, 35c, 35d).