Dandenong plumbing, by the facts
Greater Dandenong
Council lists Dandenong among its suburbs, alongside Dandenong North, Dandenong South, Keysborough, Lyndhurst, Noble Park, Noble Park North, Springvale and Springvale South.
Mostly rented
At the 2021 Census, 52.7% of occupied homes in the suburb of Dandenong were rented. 41.4% were separate houses, 39.0% townhouses or semis and 19.3% flats or apartments.
Your drain, past the fence too
Owners are responsible for the stormwater drains on their property and any section of private drain outside it that connects to the legal point of discharge. Council holds no records of where residential drains run.
The 40 cm tree rule
Under Council's Tree Protection on Private Land Local Law 2023, removing any tree 40 cm or more in diameter, measured 1.4 m from the ground, needs a permit.
Roots and cracked pipes
Council's drainage page is direct: trees with large invasive roots may eventually lead to burst or blocked pipes. Roots grow towards water and nutrients, and if a pipe is cracked or leaking they get in and can fill it.
It adds that poorly maintained private drains block sooner and carry less, which can mean localised flooding and more overland flow. Our tree roots page explains how a plumber finds and fixes the entry point.
Units, townhouses and the sewer
South East Water's sewer stops at the inspection opening, often near the boundary, and the pipes on the house side are the owner's. In a group of units, a line serving more than one home is a private combined drain, and South East Water isn't responsible for shared private pipes in an owners' corporation.
If you rent, report a blocked toilet or drain to your landlord or agent. From 1 March 2027, a rental hot water system that permanently fails and can't be repaired must be replaced with an efficient heat pump water heater or an electric-boosted solar water heater.
Where to start
For a blockage, see blocked drains in Melbourne. For a toilet that won't clear, try blocked toilets.
What we would do
If the same Dandenong drain blocks every few months, Council's own advice points to a cracked pipe with roots getting in. Once the plumber has confirmed the problem is on your side of the inspection opening, ask for a camera inspection rather than another clean-out. It shows where the break is, and if a tree has to go, the 40 cm permit rule tells you whether to apply first.