How Do Septic Lift Stations Work?

A septic lift station, once filled to a certain limit as determined by a float sensor, activates and pumps sewage to another line, facility or sewer. These systems are vital for moving sewage uphill when one sewage line is lower than another.

Septic lift systems perform the following functions:

  • Moving sewage from low-elevation home sewage lines to higher-elevation municipal sewage lines
  • Shifting sewage between stages in processing plants
  • Preventing backflow when sewage systems are compromised.

The key to the functionality of a lift system is its float. This is a flotation device attached to a chain, which stretches taut as inflowing sewage raises the float. Once at full extension, the float trips a switch which activates the lift system's pump and begins transferring sewage to the next stage.

Problems septic lift systems experience:

  • Float sensor failure
  • Pump failure
  • Capacity overload

Like all septic systems, septic lift systems require regular maintenance and careful oversight. In fact, because they work against gravity, the strain on the machinery involved is considerably greater than the strain undergone by equivalent typical septic systems. While septic technology is always improving, keeping to a regular maintenance schedule is the best way to ensure that a pump remains water-tight and secure against the corrosive properties of effluent. This will keep the system running and the sewage flowing uphill to go onward for processing.