Everything You Should Know About Septic Risers

All septic system parts are critical, including those many don't know about. For example, many don't know the significance of septic risers. Below is an overview of septic risers.

Meaning and Purpose

A septic riser is a pipe that creates a vertical path into a septic tank. The riser protrudes from the ground and has a lid to prevent things and people from accidentally falling into the tank. Septic risers have several functions; below are the three major ones.

Tank Inspection

You may need a septic contractor to inspect your tank at some point during the tank's lifetime. For example, the contractor may need to check for tank deformation or effluent level. The contractor can use the septic riser to inspect the tank if that time comes.

Tank Pumping

Regular tank pumping is necessary to eliminate accumulated solid wastes. Otherwise, the waste reduces the tank's effective capacity and treatment efficiency. During pumping, the septic contractor breaks down the solid waste and uses a vacuum pump to suck out the waste. The process takes place via the septic riser.

Tank Location

The septic riser connects to the tank, marking the tank's location. Knowing the tank's location helps you to reach it during emergencies and servicing. You also need to know the tank's location when excavating parts of your yard or building things so that you don't damage or build over the tank.

Design, Material, and Installation

A septic riser is a cylindrical pipe big enough for the tools and equipment contractors use to inspect and pump the tank. The riser's diameter depends on, among other things, the tank's underground depth. Tanks buried deeper in the ground require wider rises than relatively shallower tanks.

Septic manufacturers sell risers as stackable units, so you can have a riser of any desired length. At a minimum, the riser should be level with the surface of the surrounding ground. The whole riser length should be watertight to prevent water from getting into the tank.

Septic risers have similar materials as septic tanks. Common materials include concrete, metal, and plastic.


Septic risers have multiple benefits. For example:

  • The risers allow contractors to execute fast tank inspection and service because they don't have to waste time locating the tank and excavating the soil.
  • The rises help minimize yard damage during tank service by excluding the need for excavation.
  • The risers minimize septic service fees by allowing fast service and excluding excavation labor.

Talk to your septic contractor to install a riser if your septic system doesn't have it. For more information, contact a company like A-1 Complete Septic Tank Service.