The PhD in Water and Environmental Science at Nagasaki University is a 3‑year full‑time doctoral program offered through the Graduate School of Fisheries and Environmental Sciences (Environmental Science course). The program focuses on advanced multidisciplinary research into water systems and environmental processes, including hydrology, water quality and treatment, aquatic ecology, coastal and watershed management, environmental risk assessment, and sustainable resource conservation. Students carry out independent, cutting‑edge research under faculty supervision, integrating fieldwork, laboratory studies, and analytical modeling to address real‑world environmental challenges such as pollution control, ecosystem resilience, climate impacts, and sustainable water management. The doctoral degree culminates in the successful defense of a doctoral dissertation that contributes new scientific insights to the fields of water and environmental science.

NOTE: The university may have additional program-specific eligibility requirements.
It is recommended to verify these on the official university website.