What happens during a septic pumping visit

Finding and uncovering the tank, pumping through the right opening, checking baffles and the effluent filter: how a septic pumping visit goes and how to prepare for it.

A routine pumping is a short visit, but a careful technician does more than empty the tank. Here is what to expect.

Before the visit

  • Find the tank. Look for the site plan from the permit (often available from the county health department), the last pumping record, or a riser lid in the yard. Tell the company how many compartments the tank has, if you know.
  • Clear the access. The truck needs to park reasonably close: mention long driveways, soft lawns, gates or low branches when you book.
  • Ask about risers. If the lids are buried, the crew has to dig. Risers that bring the lids up to ground level make every future visit faster.

During the visit

  1. Uncovering the lids. The technician opens the tank through the main manhole, not only through the small inspection ports, so the whole tank can be emptied.
  2. Checking the levels. Before pumping, many technicians note the scum and sludge layers and whether the liquid level is normal. A level above the outlet can point to a drain field or outlet problem.
  3. Pumping. The contents are removed with a vacuum truck and taken to an approved treatment or disposal site.
  4. Inspecting the inside. With the tank empty, the technician can look at the inlet and outlet baffles (or tees), the walls and the joints, and spot cracks or roots.
  5. Cleaning the effluent filter, if your tank has one. A clogged filter is a common cause of slow drains.

After the visit

Ask for a written record: date, volume pumped, condition of the baffles and lids, and recommendations. Keep it with your house papers. A tank does not need to be "seeded" with bacteria after pumping: normal household use restores the biology.

Questions to ask when you request quotes

  • Is the company licensed or registered with the state or county, where required?
  • Does the visit include locating and digging up the lids, and cleaning the filter?
  • Will they provide a written report, and can they file it with the county if required?

Describe your tank and access in the form and licensed local pumpers get back to you with a written quote.

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