What’s an ORG – Overflow Relief Gully?

Share On:

It is a drain like fitting located outside the home, its important that your ORG is visible and not covered with any garden ornaments, pot plants or anything that may prevent it from operating correctly. It’s generally located parallel to a house wall. It’s designed to release any sewage overflow away from the interior of your home and outside to the garden, in the event of a sewer blockage.

Function and Uses of ORG (Overflow Relief Gully)

The ORG is an extremely important part of your sewer system, as it will prevent sewage from overflowing into your home. I don’t know if any of you have experienced a situation where an ORG wasn’t allowing sewer to overflow outside, but lets just say it’s one of the worst situations you can imagine happening to your beloved house.

I have seen units with over 2 inches of sewer across the entire floor and all due to the simple fact that on ORG was blocked due to a pot plant, the pot plant prevented the overflow of sewer whilst the owner was away, however the unit above continued to use their toilets, showers and everything else for a period of days without noticing anything different. It wasn’t until the owner arrived home that the mess was discovered. All this could have easily been prevented if the owner of the house understood what an ORG was and how it operated.

An ORG is installed and fitted at a depth that is lower than any other waste outlet in the property. Once a sewer blockage occurs, it’s plastic grate should pop off to release the pressure and direct sewage away from your home which serves its main purpose in preventing water from flooding inside the house. Storm-water should not rise above or flow into your ORG as this may flood the sewerage network and lead to overflows.

Most council will issue warning letters and sometimes fines for houses that use their ORG to take away stormwater runoff or the like. This is a big No No in plumbing terms as storm water and sewer should always be in separate lines and disposed of in vastly different ways. Can you imagine what your council sewer fees would be if they were made to treat millions of litres of additional stormwater runoff each week? At the end of the day it’s really important that you understand these simple rules.

Ensure that your ORG is never covered and is free to run and operate if there ever is a blocked drain. Ensure that your ORG is above the level of any storm water run off and that no down pipes or storm water pipes are connected to or can flow into your ORG, this could potentially cause greater issues for sewer treatment plants and the larger environment. Storm-water run-off from water tanks or down-pipes should not be directed to your ORG or connected to the sewerage network.

If you are unsure of whether or not your ORG is installed correctly or where in fact it is actually located at your premises, then please don’t hesitate to contact The Plumbing & Electrical Doctor and we will happily assist. Serving areas in Canberra, Newcastle, Central Coast, Hunter Valley, Lake Macquarie, and Port Stephens. Call 13 10 91 now!

Doctor Gets It Done