What is defined as wastewater produced from various activities?

The term "sewage" specifically refers to wastewater generated from domestic, industrial, or agricultural activities. This includes water that has been used for washing, cooking, bathing, and sanitation, which contains a variety of contaminants such as organic matter, pathogens, and chemicals. Sewage is collected and conveyed through a network of pipes to treatment facilities to be processed and cleaned before being released into the environment or reused. Understanding sewage is crucial for managing water resources and ensuring public health, as improper handling can lead to significant environmental and health risks.

In contrast, stormwater is rainwater that flows over surfaces and can carry pollutants, but it isn’t produced from direct human activities like sewage. Runoff refers to the excess water that flows over land, which may include stormwater, but again does not specifically denote wastewater from activities. Groundwater is water located beneath the Earth's surface, not directly related to wastewater produced from human activities. Thus, sewage stands out as the correct definition for wastewater produced from various activities.