Describe the outdoor drainage problem
Stormwater issues may appear as a full pit, overflowing grate, disconnected downpipe, pooling beside the house or water moving toward a garage or entrance. Describe the location and what happens during or after rain. If the problem occurs without rain, mention that too.
Do not enter a flooded area, lift heavy covers or work near electrical equipment. If water is causing immediate danger or major damage, contact the relevant emergency service first.
Common stormwater enquiries
- Blocked pit or grate: say whether leaves, sediment or standing water are visible.
- Downpipe connection: explain if a pipe has separated, cracked or is discharging beside the building.
- Yard or driveway pooling: note where water gathers and whether it affects access or the building.
- Recurring overflow: say how often it happens and whether nearby drains are also slow.
Information that helps the provider
Share the suburb, outdoor location, weather conditions, visible damage and whether there are access issues. If the property is a rental, unit or commercial site, include who can arrange access. Photos should only be shared through a secure provider channel when requested.
For internal sinks, toilets or floor wastes, the blocked drain page may be the closer match. For active water damage, read the emergency plumbing guide.
For internal drains or recurring blockages, see the drain cleaning page. The guide to an overflowing backyard stormwater drain covers rain-related observations.
The independent provider confirms access, equipment, excavation or repair scope, timing, licence and price directly with you.
Rain-driven water or a supply leak
The first thing worth establishing is whether the water arrives with rain or independently, because the two lead to different work. Water that appears during or shortly after rain, at a grate, pit, downpipe or low point, is almost always stormwater. Water that appears with no rain, or a meter that keeps turning with everything off, is a leak on the supply side. The water leak page covers that second case.
Where outdoor drainage problems usually start
- Roof plumbing: gutters, box gutters, valleys and rainheads that hold water or overflow at the wrong place.
- Downpipes: a disconnected, cracked or undersized downpipe discharging beside the building rather than into the stormwater system.
- Pits and grates: leaves, sediment and debris reducing capacity until the pit backs up.
- The line itself: roots, a collapsed section, a sag holding water, or a grade that sends water the wrong way.
- The discharge point: where the system is allowed to release water, which is a council matter rather than a plumbing preference.
The legal point of discharge
Where stormwater is permitted to discharge from a property is set by the local council, and each council publishes its own requirements. This matters when a discharge point is being changed, when a new connection is proposed, or when water is being sent somewhere it should not go. The Mornington Peninsula Shire, for example, publishes its legal point of discharge requirements, and other councils in the south east do the same. Checking that before work is planned avoids a fix that has to be redone.
What is private and what is not
Drainage within the property boundary is private. The kerb, channel and council drainage system beyond it are the council's, and problems there are reported to them. If water is surging from a street pit or the kerb rather than from the property, say so in the enquiry, because that changes who can act.
What an inspection involves
The provider will usually start by identifying which part of the system is failing: roof, downpipe, pit, line or discharge. From there, the approach can involve clearing and jetting, a camera inspection, or excavation where a line is collapsed or badly graded.
Ask what the scope includes, whether excavation is expected, what access is needed, and how the surface is reinstated. Where a section has to be replaced, the trenchless and relining guide explains when a trenchless option applies and when it does not.
Keeping it clear
Most repeat stormwater overflows are debris rather than damage: leaves and sediment in gutters, rainheads and pits, and grates that have been covered over or paved around. If an overflow happens at the same point each time, note roughly how often, how much rain it takes, and whether anything changed nearby such as paving, a shed, a retaining wall or new landscaping. That history is often more useful than a description of the water itself.
Stormwater coverage
Include the exact suburb, such as Frankston, Cranbourne, Mordialloc, Carrum Downs, Dandenong, Pakenham, Mornington, Berwick, Narre Warren or Mentone. For a Peninsula property, the Mornington Peninsula plumbing page helps record the exact suburb before handover. Coverage depends on the provider's current run sheet and the type of drainage work.
What to record when stormwater overflows
Updated
The pattern of stormwater overflow helps explain what needs investigating. From a safe position, record where water first appears, the direction it travels and whether it reaches the house, garage or neighbouring land. Note whether the problem occurs in every shower or only during heavier rainfall. A video showing the flow can be more useful than a photograph taken after the water disappears.
Include visible pits, downpipes and surface drains in the description. Do not enter flooded areas, open a pit containing moving water or reach into a drain. Keep children and pets away from contaminated or fast-moving water. Where there is an immediate threat to people, use emergency assistance rather than waiting for a routine enquiry response.
An overflow can involve debris, an obstruction, damaged pipework or a system that needs a wider assessment. The observation does not prove which explanation applies. Ask whether the inspection will cover the drainage path and discharge point as well as the nearest blocked opening. Tell us about earlier drainage changes and any plans or inspection records you have.