What is an overflow relief gully?
An overflow relief gully (ORG) is a critical part of your sewerage system. They prevent sewage from flooding your house.
- drain-like fitting located in the ground outside your home, usually near the laundry area.
- Designed to overflow sewage onto the ground outside your house, rather than inside the home if there is a blockage in your plumbing or excessive rain water in the sewerage network.
Large houses with a few bathrooms may have more than one overflow relief gully.