noun, noun or participle which takes 'suru', intransitive verb
flushing; passing water through
Technical term used in plumbing, engineering, and maintenance contexts. Refers to the act of running water through a pipe, system, or apparatus, often for cleaning, testing, or initial operation.
新しい水道管に通水する前に、十分に洗浄してください。
Before flushing the new water pipes, please clean them thoroughly.
ダムの通水試験が来週行われる予定です。
The dam's water-passing test is scheduled for next week.