If wastewater spills out beside your home, here is what the overflow may reveal.
Recognising a gully
An outside gully receives wastewater from certain household pipes or rainwater depending on the installation. If it overflows every time the kitchen sink empties, the outlet downstream may be restricted.
Not every gully is connected the same way
Some installations separate rainwater and foul drainage; others vary with the property age and local arrangements. Do not assume that anything entering the gully necessarily travels to the foul sewer.
Check for obvious debris
Leaves and mud near the grating may be visible, but the obstruction may be hidden within the trap or connecting drain. Avoid putting your hands into contaminated water.
When rain changes the picture
If overflow happens only during storms, the cause could include a rainwater restriction or capacity problem rather than a kitchen waste blockage.
Getting it investigated
Describe when the overflow happens and whether it smells of sewage. A drainage specialist can assess the route and clear an accessible obstruction where appropriate.
Need a drainage specialist?
You can describe your drainage problem and request quotes from local tradespeople through MyJobQuote. Ask the person you choose to explain the cause, price and scope of any proposed work.