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Stormwater drainage — blocked, overflowing or ponding

Blocked stormwater lines, downpipes that overflow in every storm, water pooling against the slab, and yards that never dry out — traced to the cause, then fixed.

QBCC licence 15161521 5.0 from 27 Google reviews Based in Thorneside
Surface drainage pit set into a lawn during a stormwater repair

Stormwater problems tend to show up in the worst weather. A downpipe that spills over in a storm, water running towards the house instead of away from it, or a soggy patch of lawn that never dries — most of these come back to a stormwater line that is blocked, broken or was never laid with enough fall.

Stormwater is not the same system as sewer. Roof water and surface water are carried in their own pipes to the kerb or another lawful discharge point, and connecting stormwater into the sewer is not allowed. That matters when a fix is designed, because the water has to end up somewhere it is permitted to go.

Why stormwater lines block

Roots, mostly. Stormwater lines are often shallow and jointed, and roots looking for water find them first. Leaves and silt washed off the roof and the yard settle in low points, and once a line is partly blocked it fills faster every storm.

Older stormwater runs are frequently earthenware or thin-wall PVC, and both crack under driveways and around tree roots. A cracked line still carries water, but it leaks into the soil around it — which is often the real cause of a wet patch beside the house.

Fixing it without digging up the yard

A blocked stormwater line is jetted clear, then a drain camera shows whether the pipe is damaged. Root-damaged or cracked stormwater pipe can be relined from the inside the same way as sewer, which matters when the line runs under a driveway or garden.

Where a section has collapsed or never had enough fall, it is dug out and relaid properly. Both options are quoted before work starts.

Detail

Stormwater work Brigs Plumbing does

Blocked stormwater lines

Jetted clear and camera-checked, so you know whether it was a one-off or the pipe is failing.

Overflowing downpipes

Usually a blocked or undersized line below the downpipe rather than the downpipe itself. Traced and cleared or replaced.

Surface drainage and pits

Grated pits and surface drains where water collects in the yard or against the house, connected into the stormwater system.

Broken and collapsed lines

Excavated and relaid with the right fall, or relined where digging would mean breaking concrete or landscaping.

Stormwater relining

Root-damaged and cracked stormwater pipe repaired from the inside with a cured-in-place liner.

Downpipe connections

New and replacement connections from downpipes into the underground line, so roof water goes into the pipe and not the garden bed.

Completed yard and under-house drainage work beside a screened enclosure

A job Niles has done

Yard and under-house drainage, finished

Every photo on this site is work Brigs Plumbing has completed, not stock photography.

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Completed work

Stormwater jobs Niles has done

Real Brigs Plumbing photos of stormwater and drainage work.

Downpipe connected down into the stormwater line at ground level
Downpipe connected down into the stormwater line at ground level
New drain line laid in an open trench before backfilling
New drain line laid in an open trench before backfilling
Trench line across a lawn after an underground drain replacement
Trench line across a lawn after an underground drain replacement
New PVC downpipe and rainhead installed against a brick wall
New PVC downpipe and rainhead installed against a brick wall

See more completed work

Related

Drains and relining

Gutters and downpipes

If the overflow starts at the roof, the gutter or downpipe sizing may be the problem.

Gutters and downpipes

Pipe relining

Repair stormwater pipe under driveways and gardens without a trench.

Pipe relining

Questions

Asked often

Usually because the underground line it drains into is partly blocked by roots or silt, so it cannot take the water as fast as the roof sends it. Sometimes the downpipe or the line is simply too small for the roof area. Clearing and checking the line comes first.

No. Stormwater has to go to the kerb, a street drain or another lawful point of discharge. Connecting it to the sewer overloads the sewer in storms and is not permitted.

Often. It may be a blocked or broken stormwater line, a downpipe that is not connected to anything, or a yard that needs surface drainage. Each is fixable; the first step is finding which one it is.

The stormwater pipes on your property are generally the owner's to maintain, up to where they discharge to the kerb or a council drain.

Yes. Cracked and root-damaged stormwater pipe relines the same way sewer pipe does, as long as the pipe still holds its shape.

Tell us what it is doing

Describe the problem on the phone. If it can be sorted without a visit, it will be.

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