Budapest’s water supply — and that of some suburban settlements — depends entirely on the Danube. Water restrictions along the DanubeExperts are almost unanimous that extremes in the Danube’s water levels will become more frequent in future. That means more stretches of very low water like the present one, but also more frequent flood waves. He added, however, that this does not mean the water supply is limitless: every system has a physical ceiling. Budapest’s position is helped by the fact that the capital’s water supply consists of several interconnected systems.