Septic Tank
A septic tank is the buried watertight container that holds household wastewater long enough for solids to settle out before the liquid flows to the drain field.
A septic tank is a watertight box, usually concrete, fiberglass, or plastic, buried in the yard of a home not connected to a public sewer. All the house’s wastewater flows in, and inside the tank gravity does the first stage of treatment: heavy solids sink to the bottom as sludge, grease and lighter material float to the top as scum, and the relatively clear liquid in the middle, the effluent, flows out to the drain field. Bacteria in the tank slowly break down the settled solids.
Homeowners meet the tank at pump-out time, which is the core of septic maintenance. The sludge layer never fully disappears, so every few years a truck pumps the tank out before the buildup gets deep enough to wash solids out into the drain field and ruin it. How often depends on tank size and household size, commonly every three to five years. Inside, baffles at the inlet and outlet keep scum from escaping toward the field.
A tank can also fail outright: concrete cracks, lids and risers corrode, and baffles break off. Because the contents give off toxic gases, opening or entering a tank is genuinely dangerous and is left to professionals.
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- Hydro Jetting : Hydro jetting clears a drain or sewer line by blasting high-pressure water through a special nozzle, scouring the pipe walls clean rather than just punching a hole through a clog.
- CIPP / Pipe Lining : CIPP, or cured-in-place pipe lining, is a trenchless repair that pulls a resin-soaked liner into a damaged sewer pipe and hardens it into a new pipe inside the old one.
- Backwater Valve : A backwater valve is a one-way gate installed in a sewer line that lets wastewater flow out but slams shut to stop sewage from flooding back into the house.
- Root Intrusion : Root intrusion is the growth of tree and shrub roots into a sewer or drain pipe through cracks and joints, drawn by the water inside, where they snag waste and cause backups.