What type of wastewater does 'domestic wastewater' exclude?

Domestic wastewater primarily refers to the liquid waste generated from households, which includes sewage and other types of wastewater that arise from residential activities, such as cooking, cleaning, and sanitation. It encompasses a variety of organic materials and health-related contaminants typical in home environments.

The correct answer is industrial waste, as it specifically refers to the wastewater produced by manufacturing and industrial processes, which is distinct from the typical waste generated by households. Industrial waste can contain a variety of pollutants and chemicals that are not present in domestic wastewater, making it subject to different regulatory standards and treatment processes.

Household waste, organic waste, and liquid waste all fall within the scope of domestic wastewater because they originate from residential activities. Household waste includes what is produced in normal living conditions, organic waste refers to biodegradable materials typically found in domestic settings, and liquid waste is a broad category that includes most forms of waste that are liquid in nature and can originate from household activities.