At present, water availability in Java, Bali and Nusa Tenggara is in the red zone or prone zone. The statement was delivered by the General Chair of the Indonesian Hydrology Society (HMI), Dr. Ir. Mohammad Hasan, Dipl. HE at the Sustainable Water International Seminar on Thursday (1/24) at the Thoyib Hadiwijaya Auditorium, Faculty of Agriculture, Bogor Agricultural University (IPB), Dramaga IPB Campus, Bogor.