Stoppage

A blockage in the sewer line that prevents the passage of wastewater.

Storm

A rainfall event. (See also – catastrophic rainfall event.)

Storm Mains

Primary collector pipelines in the storm water collection system.

Storm Sewer

A sewer intended to carry only storm waters, surface runoffs, street washwaters, and drainage.

Stormwater Sewer

A sewer that conveys stormwater runoff from two or more properties and stormwater runoff from roofs, paved areas and roads within the catchment area of the sewer.