工作人员负责维护城市路权范围内的雨水排水系统。 这包括清洁，以便在大雨期间，系统将雨水输送到正确的分水岭，从而防止洪水泛滥。 私人财产的雨水渠维修通常是业主的责任。

污水渠系统的种类

• 卫生下水道-用于将人类排泄物运送到废物处理厂的管道系统
• 雨水渠-用于输送雨水径流的管道系统

城市或财产所有者的责任

The homeowner is responsible for the section of sewer line from their building to the City's sewer main, most frequently located in the center of the street, but not always.

下水道备份

A backup occurs when waste or debris has obstructed a home's plumbing system or lateral, resulting in clogged or slow-moving drains or toilets. A backup occurs on the homeowner's property and the expense and responsibility for cleanup and repair lies with the homeowner.

下水道溢出

A sewer overflow occurs when a city main becomes blocked and water or waste materials come up through a sink, bathtub drain or toilet when the home's plumbing system is not being used. 溢流会造成严重的破坏，包括淹没房间或整个房屋。