What components are included in domestic sewage?

Domestic sewage is comprised of a combination of various waste materials that are generated from residential sources. The correct option identifies the primary components of domestic sewage, which typically includes human and animal waste, household waste, and groundwater infiltration.

Human and animal waste refer to excrement and waste produced by humans and pets that contribute to the organic load in sewage. Household waste encompasses a wide array of materials that originate from daily living, including kitchen waste, cleaning products, and toiletries, which are prevalent in residential settings. Groundwater infiltration adds to the volume of sewage by allowing freshwater from the surrounding area to enter the sewage system, particularly during heavy rains or in areas where sewer systems are not well maintained.

Together, all these elements contribute to the overall composition of domestic sewage, making it crucial to consider them when discussing sewage treatment, environmental impact, and public health concerns. Understanding this composition helps in designing effective waste management systems to treat and manage sewage appropriately.