A sanitary sewer carries only wastewater (sewage) and no stormwater. A storm sewer carries rain and snowmelt runoff, while a combined sewer conveys both sewage and stormwater in the same pipe.
A sanitary sewer carries only wastewater (sewage) and no stormwater. A storm sewer carries rain and snowmelt runoff, while a combined sewer conveys both sewage and stormwater in the same pipe.