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Wastewater • By definition (for today’s purpose) – Water that has constituents of human and/or animal metabolic wastes – Water that has the residuals from cooking, cleaning and/or bathing • Thus, – Domestic wastewater • Our focus is wastewater that comes from a home
Domestic wastewater originates from activities such as restroom usage, bathing, food preparation and laundry. Commercial wastewater from non-domestic sources, such as beauty salons or auto body repair shops, for example.
Domestic wastewater, also known as sewage, is the water that comes from households, which includes water from sinks, showers, toilets, and washing machines. This wastewater contains a mix of organic and inorganic substances, such as food particles, oils, chemicals, and human waste.
The collection and treatment of domestic sewage and wastewater is vital to public health and clean water. It is among the most important factors responsible for the general level of good health enjoyed in the United States.
Sewage (or domestic wastewater) consists of wastewater discharged from residences and from commercial, institutional and public facilities that exist in the locality.
There are two types of domestic sewage: blackwater (wastewater from toilets) and graywater (wastewater from all sources except toilets). Blackwater and graywater have different characteristics, but both contain pollutants and disease-causing agents that require treatment.
Wastewater is the polluted form of water generated from rainwater runoff and human activities. It is also called sewage. It is typically categorized by the manner in which it is generated—specifically, as domestic sewage, industrial sewage, or storm sewage (stormwater).
Wastewater comes from ordinary living processes: bathing, toilet flushing, laundry, dishwashing, etc. It comes from residential and domestic sources. Commercial wastewater comes from non-domestic sources, such as beauty salon, taxidermy, furniture refinishing, musical instrument cleaning, or auto body repair shops.
Today’s higher populations and greater volume of domestic and industrial wastewater require that communities give nature a helping hand. The basic function of wastewater treatment is to speed up the natural processes by which water is purified.
Domestic sewage is the primary source of pathogens (disease-causing microorganisms) and putrescible organic substances. Because pathogens are excreted in feces, all sewage from cities and towns is likely to contain pathogens of some type, potentially presenting a direct threat to public health.