What does the term "Stormwater" exclude?

The term "Stormwater" refers to water that originates from precipitation events, primarily rainfall and snowmelt. This term encompasses various forms of water that flow over surfaces, contributing to drainage systems. In this context, sewage and industrial waste are materials or effluents from human activities that should not be included as stormwater because they are classified differently within water management practices.

Sewage consists of wastewater that includes human waste and other substances from residential and commercial sources, while industrial waste refers to pollutants generated by industrial processes. Both categories of water are typically managed through separate systems designed for sewage treatment and industrial effluent management, rather than through stormwater management systems.

Consequently, identifying sewage and industrial waste as excluded from the "stormwater" category is correct because these sources are managed distinctly and have different implications on drainage and water quality management as opposed to surface runoff, groundwater, and rainwater, which are integral components of stormwater systems.