Stormwater

Responsibility for stormwater drains

Properties created through subdivisions in recent years are generally serviced by a properly piped stormwater reticulation system. However, even these systems may not automatically be able to accept all run-off that may occur. This system is normally taken over and maintained by the Council as a public drain from the time the subdivision is accepted. 

Older properties that came into existence before local authorities were in a position to lay down subdivisional conditions and requirements often have open drainage channels formed during land development. The property owner normally has responsibility for cleaning and maintaining these drains (even when the council has the right to discharge road water into them). It may be appropriate to consult a private drain layer for assistance in these situations. 

Surface water on private properties

It is normal for lower-lying properties to experience stormwater runoff from properties located higher, due to the natural contour of the land.   

However, if the stormwater has become concentrated in one area due to changes in the natural contour of the land or runoff from a driveway, it is not acceptable for this stormwater to run off or be diverted onto neighbouring properties.  Building regulations require that this type of runoff be piped to a road or stormwater system where practical.

Surface water on private properties due to circumstances like this is a civil matter between neighbours.  Council does not get involved.  A practical method of disposing surface stormwater can often be worked out through cooperation of affected property owners.  The most efficient method of trapping and disposing of surface water is through open drains that are properly maintained.   

Stormwater issues relating to new subdivisions or building sites

If you have concerns relating to runoff from new subdivisions or building sites please contact us and we will investigate.

What are watercourses and what are they used for?

A watercourse is a naturally formed depression in the land that effectively collects and concentrates surrounding surface water, which then flows away in a natural manner.  

The Council has the right to discharge surface water from roads into a natural watercourse on private land.  Similarly, if your property contains a natural watercourse you may concentrate stormwater to flow into the watercourse. 

Should you wish to lay pipes, or enclose or line a natural watercourse please obtain the necessary advice first. 

Can I channel stormwater into the sewerage system?

It is illegal to deliberately channel stormwater to the sanitary sewerage system as they are designed to be entirely separate from the disposal of stormwater.  If stormwater enters the sewerage system it may cause overflows that can contaminate watercourses. 

The Countryside Living Toolbox

The Countryside Living Toolbox document provides stormwater design guidance to consultants, developers, landowners and the council for countryside living areas. The document provides a selection of methods to mitigate the effects of stormwater run-off from countryside living areas and is split into four sections.

Water Supply and Wastewater Management Considerations (PDF 407kb)
This section of the Toolbox briefly discusses requirements relating to both potable and non-potable water supply. It also provides an overview of the design features and maintenance considerations associated with on-site wastewater treatment and disposal systems.