In South East Queensland it can rain. A lot. This is why it’s important that your property is equipped to handle a large downfall without flooding your or your neighbour's properties. The stormwater that comes off your buildings' roof or the natural runoff from the land must be directed correctly to nearby stormwater systems.
If your home was built before 1975 you might have a rubble pit or shallow trench filled with rocks, through which the stormwater drains. Unless you carry out a reconfiguration of your land (subdivision, significant building or renovating) these pits are still considered a ‘lawful point of discharge’ if the ability to direct the stormwater straight to council stormwater drains was not available for the original build.
The problem with a rubble pit is that they don’t manage large deluges of rain very well and can overflow during big storms or extended periods of rainfall causing flooding and damage to neighbouring properties. Flooding rubble pits is a common issue within councils like the Brisbane City Council which has many older properties.
Homes built since 1975 must have stormwater pipes directly connected to a council drain or road to avoid these flooding or runoff issues. New developments or those that have been significantly renovated or subdivided must connect to a ‘lawful point of discharge’ such as an authorised council stormwater drain or road.
It is illegal to direct stormwater from your property to a neighbour's land.
Property owners are responsible for the private stormwater lines throughout their land and as such are encouraged to keep stormwater drains clear at all times to help prevent damage and flooding during storms.
More information on the stormwater requirements for your property in the Brisbane City Council can be found here - brisbane.qld.gov.au
References -