* Fecal matter: This is the solid waste produced by the human body, and it is the main component of sewage that requires treatment.
* Urine: Urine is the liquid waste produced by the kidneys, and it also contributes to the volume and composition of sewage.
* Toilet paper and other wastewater: This includes toilet paper, feminine hygiene products, and other materials that are flushed down the toilet.
* Chemicals: Sewage can also contain a variety of chemicals, including detergents, cleaning products, and personal care products.
* Pathogens: Sewage can also contain a variety of pathogens, including bacteria, viruses, and parasites. These can cause disease if they are not properly treated.
