A sewer pit overflow is one of the most urgent and unpleasant plumbing emergencies a Sydney property owner can face. When a sewer inspection pit overflows, raw sewage is pushed back to the surface. This is a serious health hazard, a sign of a significant blockage in the sewer system, and a situation that requires immediate professional attention.
Why Sewer Pits Overflow
A Blocked Sewer Line Downstream of the Pit
The most common reason a sewer pit overflows is a blockage in the sewer line between the pit and the main sewer. When this line is blocked by tree root intrusion, accumulated debris, or a collapsed pipe section, wastewater from the property has nowhere to go. As flushing and water use continue, sewage backs up and overflows through the inspection pit. A licensed blocked drain plumber in Sydney can clear the blockage using an electric eel or hydro jetting. Related: 7 Plumbing Emergencies That Cannot Wait.
The Main Council Sewer Is Overloaded
During extreme rain events, the council sewer system can become overloaded, causing sewage to back up into the inspection pits of connected properties. If multiple properties in the same street are experiencing pit overflow simultaneously during heavy rain, this is likely the cause. Contact Sydney Water to report the issue and keep people away from the overflow area.
A Damaged or Collapsed Pit Structure
Older sewer pits made from brick or concrete can crack, collapse, or develop joint failures over time. A damaged pit can allow groundwater to infiltrate during rain and overwhelm the sewer system capacity, causing overflow. A licensed Sydney plumber can inspect the pit structure and recommend repair or replacement of the chamber if it is damaged.
What to Do When a Sewer Pit Overflows
Stop all water use in the property immediately. Keep children and pets away from the overflow area. Do not attempt to clear the overflow yourself — sewage is a biohazard. Call a licensed plumber in Sydney immediately for emergency sewer clearing. A CCTV camera inspection after clearing will confirm whether tree root intrusion, a pipe defect, or a pit structure problem is the underlying cause. Related: How Much Does Emergency Plumbing Cost in Sydney?
If Your Sewer Pit Is Overflowing in Sydney, Call 1300 071 280
All Day Plumbing provides 24-hour emergency sewer clearing across Sydney. If your sewer pit is overflowing, call us on 1300 071 280. We offer same-day emergency callouts and professional sewer clearing with CCTV inspection to identify and permanently resolve the cause of the overflow.