Typically, wastewater is dispersed through a gravity-fed system, allowing the fluid to flow gradually downhill. However, when this isn't feasible, a pumping system can be installed instead. In certain situations, a pumping system may also be a more cost-effective option than constructing a gravity-fed system over long distances or across challenging terrain.

Pumped drainage systems are utilised to remove wastewater, surface water, and sewage from areas with low gravity or where connecting to a drain or watercourse may be challenging.

Typically located underground, the pumped drainage system enables wastewater to collect under gravity before being pumped through pipework and discharged into a watercourse, drainage field, or sewer.

In a pumped drainage system, the wastewater is collected and channeled towards a sump through pipework laid to a standard gradient. As the water level in the sump rises, float switches are triggered, activating the pump to move the liquid out of the sump and into the mains drain or watercourse.