Septic services: pumping, inspections, and repairs
If your home isn't on a city sewer, the septic system is your own small treatment plant. Here's what the common septic services involve, what drives the price, and which of our guides to read before you call.
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Price check: Want a ballpark first? Our septic cost estimator shows low, typical, and high price ranges for pumping, inspections, repairs, drain fields, and new systems, based on published US cost data.
How a household septic system works, briefly
Everything you flush or drain flows to an underground tank. Solids settle to the bottom as sludge, grease and light material float to the top as scum, and the partly clarified liquid in the middle flows out to a drain field (also called a leach field), where the soil finishes treating it. Bacteria in the tank break down some of the solids, but not all of them. That's why sludge builds up and the tank has to be pumped from time to time.
Some systems add parts: an effluent filter on the outlet, a pump tank that pushes effluent uphill or to a mound, or an aerobic treatment unit that adds air. Those systems usually have an electrical septic system control panel with an alarm, covered below.
Septic pumping (sewage tank emptying)
Pumping is the routine service most owners need. A truck with a vacuum tank removes the sludge, scum, and liquid through the tank's access opening. A good pumper will also:
- pump through the main access opening, not only a small inspection port, so the sludge is actually removed
- look at the inlet and outlet baffles and tell you if one is damaged or missing
- clean the effluent filter if there is one
- note the liquid level, since a level above the outlet can point to a drain field problem
- give you a written record of the date and gallons removed
How often you need it depends on tank size, household size, and habits. Our guide on how often to pump a septic tank explains the usual interval and the warning signs that it's overdue.
What affects the price of pumping
- Tank size, since many companies price by gallons pumped
- Access: digging up buried lids costs extra, which is why many owners add risers and lids
- Distance from the truck to the tank and how far the hose has to run
- Disposal fees charged by the treatment plant in your area
- Emergency or after-hours calls
Septic inspections, including well and septic inspections
Inspections range from a quick visual check to a full evaluation. A thorough one usually involves locating and opening the tank, measuring sludge and scum, checking baffles and filters, looking for signs of trouble in the drain field, and sometimes a hydraulic load test or camera inspection of the lines.
Homes with a private well and a septic system are often inspected together when the house is sold, so buyers search for a well water and septic inspection near me. The well side typically includes a water test for bacteria and other contaminants. Ask the inspector what tests are included, whether the tank will be pumped as part of the inspection, and whether you get a written report.
Septic system control panels and alarms
If your system has a pump or an aerobic unit, it has a control panel, usually mounted on a post or the side of the house. The panel runs the pump on floats and sounds an alarm (a buzzer and a light) when the water level in the pump tank gets too high or a component fails.
If the alarm goes off:
- Cut back on water use right away: no laundry, dishwasher, or long showers.
- Check that the breaker for the pump hasn't tripped.
- Press the silence button if there is one. That only stops the noise, not the problem.
- Call a septic service company. A high-water alarm that doesn't clear on its own within a few hours of low water use usually means the pump, a float, or the drain field needs attention.
Safety: Control panels contain line-voltage electricity and sit next to wet ground. Don't open the panel or handle the pump or floats yourself unless you're qualified.
Repairs and replacement
Common repairs include replacing broken baffles, lids, and risers, clearing or replacing the line from the house, repairing pumps and floats, and, in the worst case, repairing or replacing the drain field. A failing drain field is the costliest problem, so regular pumping is cheap insurance.
If you're replacing a tank or building new, start with our septic tank size calculator, then read about concrete tanks and fiberglass tanks. Building small? See septic options for a tiny house.
Before you call a septic company
- Find your tank, or at least the records. Our guide on how to find a septic tank on your property helps.
- Know when it was last pumped, if you can.
- Describe any symptoms: slow drains, gurgling, odors, wet spots, or a septic backup.
- Ask whether the price includes digging, disposal fees, filter cleaning, and a written report.
Frequently asked questions
How do I know if my house has a septic system?
Common clues are a well instead of city water, no sewer line on your utility bill, a lid or riser in the yard, or a cleanout pipe near the house leading away from the street. Your county health department or the property records often have a septic permit on file.
Is a septic inspection required when selling a house?
It depends on your state, county, and lender. Some places require an inspection at sale and many buyers ask for one anyway. Check with your local health department or your real estate agent.