Sewer

Sewer may refer to:

• Part of sewerage, the infrastructure that conveys sewage
• Effluent sewer, a collection system that transports only the liquid portion of wastewater through small-diameter pipes laid at contour
• Sanitary sewer, a system of pipes used to transport human waste
• Storm drain, a collection and transportation system for storm water
• Combined sewer, a system performing both the functions of a sanitary sewer and a storm sewer
• Sewer, one who does sewing