Responsibility depends on who owns the blocked pipe or drainage asset, not whether it is outside. In Sydney, property owners usually arrange and pay for work on private drains, Sydney Water handles faults in its wastewater network, and the owner of a public stormwater asset, often the local council, handles that asset.
Usual responsibility in Sydney
| Blocked asset | Who usually arranges the work |
|---|---|
| Private wastewater pipe serving the property | Property owner, up to the defined connection with Sydney Water’s network |
| Sydney Water wastewater main or other network asset | Sydney Water |
| Private stormwater pipe, pit or drain | Property owner, up to the authorised public connection |
| Public stormwater pit, pipe or channel | The authority that owns it, often the council but sometimes Sydney Water or another authority |
The property boundary may be a useful clue, but it is not always the responsibility point. Sydney Water uses the relevant connection arrangements to distinguish private plumbing from its network. It also owns some stormwater assets, so do not assume every public stormwater drain belongs to the council. Check Sydney Water and the relevant council’s drainage information.
Rental and strata properties
For a rental, the landlord or agent normally arranges necessary plumbing repairs. A tenant may be liable if evidence shows they intentionally or negligently caused the blockage. Tenants should report the problem promptly and follow the repair process outlined by NSW Fair Trading.
For strata property, responsibility depends on whether the drain forms part of a lot or common property under the registered strata plan, not simply whether it is outdoors. Report it to the strata manager or owners corporation so they can check the plan and applicable NSW strata guidance.
How to confirm ownership and report the blockage
- Identify the system: Determine whether the drain carries wastewater or stormwater.
- Check who is affected: A blockage affecting only one property, particularly when water is being used there, may be in private wastewater drainage. Several affected properties or an overflow continuing when no water is used may indicate a network fault. These are clues, not proof.
- Check records: Review available property drainage diagrams, strata plans, Sydney Water information and council stormwater maps. Confirm uncertain ownership with the relevant authority.
- Contact the likely owner: Report a suspected wastewater-network fault to Sydney Water. Report an apparent public stormwater blockage to the relevant council unless another asset owner is known.
- Get a licensed inspection if needed: An appropriately licensed plumber or drainer can inspect private drainage and use CCTV equipment where necessary to locate and document the blockage. Do not attempt drainage repairs yourself.
If sewage is overflowing, avoid contact and keep children and pets away. Do not lift public pit or manhole covers, insert tools or enter any drain. Report the overflow promptly to the relevant authority or seek urgent licensed assistance.
If the blockage appears to be within private drainage or its location remains unclear, contact our licensed Sydney stormwater plumbing team for an inspection.