Rockdale facts for a plumbing job
Mostly apartments
At the 2021 Census, 69.5% of the suburb's occupied homes were flats or apartments and 24.3% separate houses. 47.0% were rented, against 32.6% across NSW.
Bayside Council
The whole suburb lies inside the Bayside council area, so Bayside Council's flood and tree rules apply.
Three catchments
Council places Rockdale in its Spring Street, Muddy Creek and Scarborough Ponds catchments, shared with Banksia, Carlton, Bexley, Brighton Le Sands, Kyeemagh and part of Kogarah.
A basin under study
Council is studying whether a detention basin in Seaforth Park could cut local flooding in the Muddy Creek catchment, with the work due to finish by mid-2026.
How flooding happens here
Bayside Council says intense rain can overwhelm the stormwater system of pits and pipes and send water over land, sometimes quickly enough to be a flash flood. Blocked drains and structures make it worse.
In low-lying parts of Bayside, king tides or storm surge can back water up the trunk drainage pipes and flood low areas. The biggest floods come when creek, overland and tidal flooding coincide. Council's online mapping shows flood extents and flood affected property information by address.
Pits, gullies and the sewer
On your own block, keep pits and grates clear so stormwater can get away. Council's point about blocked drains applies at home too.
Keep rain out of the sewer as well. Sydney Water says stormwater must not enter a property's wastewater pipes, and when it does, the system overloads in wet weather. Your private wastewater pipes are yours up to and including the point of connection with Sydney Water's system. In an apartment block, NSW strata rules usually put pipes under the floor and in boundary walls with the owners corporation.
Trees and pipes
Bayside needs a permit before you prune or remove a tree on your property. Council will consider removing a tree that conflicts with built structures once all engineering alternatives have been considered, and may allow root pruning that limits damage without harming the tree. Trees on nature strips are Council's.
That order of steps points to repairing or relining a root-damaged pipe first, and applying about the tree only if the pipe fix isn't workable.
What we would do
Look up your address on Bayside's flood mapping before you pay for new stormwater pipes, pits or a pump. If water backs up through a courtyard drain on big tides, tell the plumber, because that's a different fault from a simple blockage. We'll match you with a plumber who specialises in stormwater drainage.