Definitions for "Septic tank"
A watertight covered receptacle designed and built to receive domestic wastewater, separate floating and settling solids from the liquid, anaerobically digest organic matter, store digested solids through a period of detention, and allow clarified liquids to discharge for final disposal. Septic tanks are made out of many different materials including steel, concrete, and plastic. The minimum size required depends on the application. For private use, the following can be used as a reference: 3 Bedrooms requires a 1000 gallon tank 4 Bedrooms requires a 1250 gallon tank 5 Bedrooms requires a 1500 gallon tank 6 Bedrooms requires a 2000 gallon tank
Underground tank for treating wastewater from a home in rural and suburban areas. Bacteria in the tank decompose organic wastes, and the sludge settles to the bottom of the tank. The effluent flows out of the tank into the ground through a field of drainpipes.
a tank used to detain domestic wastes to allow the settling of solids prior to distribution to a leach field for soil absorption. Septic tanks are used when a sewer line is not available to carry them to a treatment plant. A settling tank in which settled sludge is in immediate contact with sewage flowing through the tank, and wherein solids are decomposed by anaerobic bacterial action.
Keywords:  onsite, critical, part
a critical part of almost all onsite
a confined space and contains gases that can be deadly