The party responsible for the failed plumbing usually pays for the repair. Owners generally pay for private plumbing, Sydney Water handles infrastructure it owns, landlords usually repair supplied plumbing in rentals, and owners corporations usually repair common-property plumbing. A tenant or other person may be liable if they caused or worsened the damage. Excess water charges are assessed separately.
Responsibility in common situations
- Owner-occupier: The owner generally arranges and pays for repairs to private service pipes, internal pipes, taps, toilets and connected fixtures or appliances.
- Sydney Water infrastructure: Report suspected faults in water mains, meters or other utility assets to Sydney Water. The meter’s location alone does not always establish responsibility; Sydney Water must confirm the ownership and maintenance boundary for the affected asset.
- Rental property: In NSW, the landlord generally arranges necessary repairs when supplied plumbing fails or deteriorates. The tenant must promptly notify the landlord or agent and may be responsible if they caused the damage or allowed a known leak to worsen. Separate rules determine responsibility for water damage in a NSW rental.
- Strata property: The owners corporation usually repairs common-property plumbing, while the lot owner generally handles plumbing belonging solely to their lot. Responsibility depends on the registered strata plan, common-property boundaries and what the pipe serves, not just where it is located. Check who is responsible for strata plumbing and bathroom leaks before assigning the cost.
For a concealed or disputed leak, a licensed plumber can identify and document the failed asset. Their report provides evidence but does not determine legal liability.
Who pays the excess water bill?
The party paying for the repair does not necessarily pay the excess water usage charges.
Responsibility depends on who holds the water account and the rules applying to the property. In a NSW rental, tenants can only be charged for water usage when the legal requirements are met, including separate metering and prescribed water-efficiency measures. Leak-related charges may require separate assessment, particularly if the tenant did not cause the leak and reported it promptly.
Sydney Water may provide an allowance for water lost through an eligible concealed leak after it has been repaired. This reduces an eligible water bill; it does not cover the plumber’s invoice. The account holder should check Sydney Water’s current eligibility, application and repair-evidence requirements.
Damage to the building or contents is a separate issue. Review how home insurance claims for plumbing leaks work, notify the insurer promptly and avoid promising that a claim will be accepted.
What should you do first?
Limit damage, notify the responsible party and preserve evidence.
- If safe, turn off the property’s main water supply for a leak in private plumbing. Report suspected faults in Sydney Water assets directly to Sydney Water. Keep away from water near electrical equipment and isolate power only if this can be done safely without approaching the affected area.
- Notify the landlord or agent immediately for a rental, or the strata manager for a strata property.
- Take photos without opening walls or disturbing plumbing. Record the meter reading and time, retain bills and correspondence, and ask the plumber to document the leak’s location, failed asset and repair.
- Do not excavate, enter confined spaces, open concealed areas or attempt plumbing repairs. Use an appropriately licensed plumber.
If the source is unclear or lies within private plumbing, contact our licensed Sydney leak detection team. A licensed plumber can locate the leak, limit further damage and document the failed asset and repair.