Get Your Drains Ready For Sydney Storm Season

Start at the surface: pits, grates and gutters

Most storm-season flooding starts with blockages you can see. Walk the property and lift the grates on stormwater pits and trench drains. Scoop out leaves, sediment, bark and tennis balls that collect over the dry months. In Sydney, deciduous street trees and gum litter are the usual culprits. Clear gutters and the leaf guards above them, then check each downpipe runs freely by tipping a bucket of water through. A downpipe that backs up or overflows at the top is blocked below, often where it meets the underground line. Pay attention to first-floor box gutters and valleys, which overflow into ceilings fast in heavy rain. Doing this before the forecast turns gives water somewhere to go. If a pit stays full of standing water hours after you flush it, the blockage is downstream in the buried stormwater line, not at the grate.

What we check underground before clearing

When surface clearing does not fix slow drainage, the problem is in the stormwater line itself: silt build-up, a collapsed section, root intrusion at a joint, or a sag holding water. Our method is find it, prove it, then fix it. Before running a machine blind, we put a CCTV camera down the line so you can see the cause on screen. That matters in storm season because a quick clear can restore flow for one downpour, then block again at the next. The footage shows whether the line needs high-pressure jetting to flush packed silt and roots, a targeted repair, or relining where a pipe has cracked. CCTV drain inspection in Sydney is commonly $250-$450, and it means any clearing or repair is aimed at the real fault instead of guesswork. You also get an honest read on whether the line is sound enough to handle the season.

Clearing stormwater lines and pits the right way

For a stormwater line packed with silt, leaf mulch and fine roots, high-pressure water jetting is usually the most effective clear. It scours the full pipe wall rather than punching a single hole through the blockage, so the line carries proper volume when the rain hits. Hydro jetting in Sydney commonly runs $300-$550, while sewer or stormwater clearing sits around $350-$650 depending on access, line length and how compacted the blockage is. A standard drain clear is often $250-$390. After jetting, a follow-up camera pass confirms the line is genuinely clear and shows any damaged section that jetting alone will not solve. If the footage reveals cracked or collapsed pipe letting silt and roots in, drain relining is quoted after the CCTV so you know the pipe condition before committing to a repair.

Warning signs and when to call before the next storm

Some problems are worth acting on before the sky opens. Call early if a stormwater pit drains slowly or holds water long after rain stops, if you had water pooling against the house, under the subfloor or across the driveway last storm, or if gutters overflow even when they look clean (a sign the underground downpipe connection is blocked). Gurgling from outdoor drains during rain, soggy patches in the lawn over the pipe run, or surcharge from a pit during a downpour all point to a restricted stormwater line. As a licensed Sydney drain trade operating 24/7 across all suburbs, we would rather inspect and clear a slow line on a dry day than pump out a flooded garage mid-storm. Booking ahead of a forecast also means you are not competing for an emergency slot once heavy rain is already causing call-outs across the city.

Common questions