What type of waste is excluded from the definition of domestic wastewater?

Domestic wastewater is typically defined as the waste generated from household activities, including liquid waste from sinks, showers, bathtubs, and toilet flushes. Each of the other options represents types of waste that can be classified as domestic.

In contrast, industrial process wastewater refers to the effluent generated from manufacturing or industrial activities. This type of wastewater often contains pollutants and chemicals associated with industrial processes, making it distinct from domestic sources. Industrial wastewater typically requires different treatment approaches compared to domestic sewage due to the varied nature and concentration of contaminants.

Therefore, the exclusion of industrial process wastewater from the definition of domestic wastewater is based on the significant differences in composition, treatment needs, and regulatory standards that apply to these two categories of waste.