A civil plumbing contractor run out of Capalaba
JMP Group installs and maintains underground water, sewer, drainage and stormwater infrastructure across Brisbane, the Gold Coast and the Redlands. We work for developers, head contractors, councils, property managers, plumbing businesses and homeowners, and we bring the excavation side with us rather than subcontracting the dirt to someone else.
How we work
One crew owns the trench and the pipe
Splitting excavation from plumbing creates a seam where programs slip and responsibility blurs. Running both in-house removes it: the trench is cut to the pipe's requirements, the pipe is laid the same day the trench is open, and the backfill is placed by the people who will be back if it settles.
Quotes state inclusions, exclusions and assumptions. Variations are priced in writing before the work happens. At completion you receive test results and as-constructed detail, because a buried asset is only as good as the record of how it was built.
What we are, and what we are not
Civil plumbing sits between domestic plumbing and heavy civil construction. We handle the infrastructure from the connection point to the building: mains, sewers, drains, stormwater and the earthworks around them. Fit-off work inside a building and road pavement construction belong to other trades, and we will tell you when a scope needs one.
Capability
Four disciplines we take end to end
Water supply
Mains, services, fire feeds, valves and pump sets, pressure tested and commissioned.
02Drainage & sewer
Gravity and pressure sewer, house drains, manholes, CCTV and excavated repairs.
03Stormwater
Pit and pipe networks, detention storage, kerb connections and subsoil drainage.
04Excavation
Trenching, bulk dig, rock, shoring, service location, backfill and reinstatement.
Standards we build to
The documents behind the work
AS/NZS 3500
The plumbing and drainage standard governing materials, grades, bedding, venting and testing for water services and sanitary drainage.
Queensland Plumbing and Wastewater Code
State requirements that decide whether work is notifiable, compliance-assessable or permit-exempt, and what certification follows completion.
Water authority specifications
Urban Utilities, Logan Water, Redland City Council and City of Gold Coast each publish standard drawings, approved products and connection processes we work through.
Before You Dig Australia
Service plans are requested for every excavation and verified on the ground, with live services exposed by hand or vacuum before machine work.
Work health and safety
Excavation, confined space and traffic management controls are documented in SWMS and traffic plans issued before we mobilise to your site.
Handover records
Pressure tests, CCTV footage, compaction results and marked-up as-constructed drawings are compiled for the project file at completion.
Licence & credentials
Licensed by the QBCC in both the plumber and drainer classes
Every job we hand over is done under a current Queensland occupational licence, which is what lets us certify plumbing and drainage work rather than only dig the trench. The number below can be checked on the QBCC licence register before you engage us.
Drainer Both classes, so pipework and drainage are certified under the one licence.
Still to be published here: the ABN, public liability and plant insurance cover, Google Business Profile reviews, and named project examples with photographs.
Check the QBCC register