Translation guide
The system of pipes, drains, and treatment facilities that carry away sewage and rainwater. In Japanese, the most common term is 下水道 (gesuidō), which refers to the whole sewer system. There are also specific terms for drainage, sewage treatment, and related infrastructure.
The network of pipes and facilities for carrying off sewage and rainwater.
The standard term for a sewer system, covering pipes, drains, and treatment plants. Used in official and everyday contexts.
The sewerage in this town is very old.
Improving the sewerage system is an urgent task.
Literally 'sewage' or 'wastewater', but often used in compounds to refer to the sewer system, e.g., 下水管 (sewer pipe).
The sewage overflowed.
The system for carrying off rainwater, separate from sewage.
Specifically rainwater drainage. Often used in technical contexts.
Inspect the rainwater drainage facilities.
Rainwater pipe. Part of the drainage system.
The rainwater pipe is clogged.
The process of treating wastewater.
A pipe that carries sewage.
下水道 (gesuidō) refers to the entire sewer system, while 下水 (gesui) means sewage or wastewater itself. Use 下水道 when talking about the infrastructure, and 下水 for the actual liquid waste.
In Japan, many cities have separate systems for rainwater (雨水, usui) and sewage (汚水, osui). When discussing drainage, clarify which type you mean.
汚水処理の技術が進歩している。
Wastewater treatment technology is advancing.