合ごう流りゅう渠きょ

noun

combined sewer

Technical term in civil engineering and urban infrastructure for a sewer system that carries both sanitary sewage and stormwater in a single pipe.

• 合ごう流りゅう渠きょは、雨う水すいと汚お水すいを同おなじ管かんで流ながす方ほう式しきです。

  A combined sewer is a system that carries rainwater and wastewater in the same pipe.