Blog 23 May 2026
Saddle connection (Y-junction)

Branch fitting allowing a new pipe connection to an existing main drain run.

Blog 23 May 2026
Combined drain

Single drain carrying both foul wastewater and surface water rainwater to one sewer.

Blog 23 May 2026
Catchpit

Chamber with a sump that collects silt and debris from drainage flows before the main run.

Blog 23 May 2026
Septic tank

Underground tank that partially treats sewage where no public sewer connection is available.

Blog 23 May 2026
Public sewer

Sewer maintained by the water and sewerage company serving multiple properties.

Blog 23 May 2026
Soakaway

Underground pit or crate system allowing surface water to soak slowly into the ground.

Blog 23 May 2026
Cesspit (cesspool)

Sealed underground tank that stores sewage with no treatment until emptied by tanker.

Blog 23 May 2026
Lateral drain

Section of drain outside a property boundary serving a single building before the public sewer.

Blog 23 May 2026
U-bend (P-trap, S-trap)

Curved pipe section holding water to block drain odours rising into the room.

Blog 23 May 2026
Package treatment plant

Compact biological treatment unit producing higher quality effluent for off-mains properties.