Toowoomba’s stormwater & drainage specialists.
Stormwater connections, ag and subsoil drains, blocked drain clearing, detention and retention tanks, and surface drainage. Built for Toowoomba’s reactive black-soil clay and the short, heavy storms that come off the Range. Free on-site measure and a fixed written quote.
Five drainage services for Toowoomba homes and acreage.
From a single blocked downpipe to a full retention-tank install on a new Highfields build. We diagnose the water problem, design the fix to AS 3500.3, and handle the Toowoomba Regional Council compliance where it is required.
Stormwater drainage
Downpipe and roof-water connections to a lawful point of discharge: kerb outlets, council pits, charged systems. Sized for the heavy Range storms. From around $2,500.
See stormwater drainage →Ag & subsoil drains
Slotted subsoil ag lines wrapped in geotextile to dry out waterlogged black-soil yards, garden beds and under-slab areas. ~$80-$140 per lineal metre.
See ag drains →Blocked drain clearing
High-pressure water jetting and CCTV camera inspection for blocked stormwater and sewer lines: tree roots, silt, collapsed pipe. Diagnosis plus a fix, not just a quick rod.
See blocked drains →Detention & retention tanks
On-site detention (OSD) and retention tanks to meet TRC stormwater conditions on new builds and subdivisions. Sized to your approved hydraulic plan. From around $6,500.
See tanks →Surface & channel drainage
Grated channel (spoon) drains across driveways, patios and thresholds; spoon drains and swales to move sheet water off the surface before it pools. ~$180-$320 per metre.
See surface drainage →Three things every Toowoomba drainage job has to get right.
Reactive black-soil clay.
Toowoomba and the Downs sit on some of Australia’s most reactive cracking clay, much of it classified Class E or P. It swells and shrinks 40 to 75mm with the seasons. Rigid stormwater pipe laid straight into that ground without proper gravel bedding cracks at the joints within a few years, and ag-drain slots clog with fine clay if they are not wrapped. We bed every line, wrap every subsoil drain in geotextile, and set the falls so seasonal movement never ponds water against your slab.
Storms off the Range.
At 690 metres on the lip of the Great Dividing Range, Toowoomba cops short, very intense storm cells that dump a month of rain in an hour. The 2011 and 2022 flash floods through East and West Creek are the extreme end, but every summer the same physics fills low points fast. A stormwater system sized for a gentle coastal drizzle simply overflows here. We size pipe and pits for the local rainfall intensity, not a generic figure.
A lawful point of discharge.
Under AS 3500.3 and the Queensland Plumbing and Wastewater Code, roof and surface water must reach a lawful discharge point: the street kerb and channel, a council stormwater pit, or an approved on-site system. It cannot be tipped onto the neighbour’s block, and a new tank tied to a development approval needs a Toowoomba Regional Council plumbing application and a compliance certificate. We confirm the legal discharge point before we dig, so the job certifies first time.
Where we work.
We cover Toowoomba city and the surrounding Darling Downs. Black-soil ag drainage and stormwater connections across Highfields, Westbrook, Glenvale, Kearneys Spring and Middle Ridge are our regular weekly work.
From enquiry to a dry yard, 5 stages.
Free site measure
We come out, find where the water actually goes, check the lawful discharge point and the soil. No charge, no obligation.
Design & quote
A drainage plan and a fixed written quote within 7 days, sized to AS 3500.3 and local rainfall, with options where they exist.
Council (if needed)
For tanks or new connections we lodge the TRC plumbing application and arrange the inspections.
Dig & install
Trench, bed, lay, backfill and reinstate. Most domestic jobs run 1 to 4 days; tanks and large yards a little longer.
Test & certify
Flow test, final inspection, compliance certificate where required, and the yard left tidy.
Ready for a free drainage quote?
Tell us where the water is going wrong. We measure on-site, design the fix, and send a fixed written price.
Articles & guides for Toowoomba
Practical reading from our jobs around Toowoomba: what drainage costs, how to dry out a flooding yard, and how to pick a drainer who will not leave you with a cracked pipe.