Operator terms · Wastewater
What is a lift station?
A lift station is a pump station that raises wastewater from a lower elevation to a higher one so it can keep flowing toward the plant by gravity. Collection systems use them where gravity alone cannot move the wastewater. Keeping the pumps running is a core operator duty.
Last reviewed 2026-08-03
Why they exist
Sewers usually flow by gravity, but terrain does not always cooperate. A lift station pumps the wastewater up so gravity flow can continue from a higher point.
What operators watch
Pumps, wet-well levels, and controls. A failed lift station can back up the collection system, so alarms and maintenance matter.
Common questions
- Why not just use gravity?
- Terrain sometimes drops too low; a lift station raises the wastewater so gravity flow can continue.
- What is a wet well?
- The chamber where wastewater collects before the pumps lift it.
- What happens if it fails?
- The collection system can back up, so lift stations are alarmed and maintained.