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Sewerage is the infrastructure that conveys sewage. It encompasses components such as receiving drains, manholes, pumping stations, storm overflows, and screening chambers of the combined sewer or sanitary sewer. Sewerage ends at the entry to a sewage treatment plant or at the point of discharge into the environment. It is the system of pipes, chambers, manholes, etc. that conveys the sewage or storm water. According to this definition, sewerage and sewage are two different terms. However, at least in American English colloquial usage, both terms are sometimes used interchangeably.〔(【引用サイトリンク】title=sewerage - definition of sewerage in English from the Oxford dictionary )〕 == Design aspects == The main part of a sewerage system is made up of large pipes (i.e. the sewers, or "sanitary sewers") that convey the sewage from the point of production to the point of treatment. Types of sanitary sewer systems include: * Combined sewer * Effluent sewer * Sanitary sewer * Simplified sewerage * Storm drain * Vacuum sewer 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「sewerage」の詳細全文を読む スポンサード リンク
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