Plumbing, drainage and gasfitting in the ACT are licensed under the Construction Occupations (Licensing) Act 2004, with applications through Access Canberra. The advertising rule in section 83 (the name on your licence, your licence number and, for a company, its ACN) applies to plumbers as it does to every licensed trade, and our Canberra tradies page explains it. What's particular to plumbing is how finely the licence is divided. Sanitary plumbers and water supply plumbers each work unsupervised in their own field. Advanced sanitary drainers do drainage. Advanced gasfitters work unsupervised above 21 kPa, general gasfitters work unsupervised at or below 21 kPa, and LPG has its own vapour phase and liquid phase classes. Backflow prevention device testing is an endorsement on top, and Access Canberra states that no plumbing class includes it automatically.
Builders and commercial clients deal with the same paperwork, so it can help to show you know it. Plumbers and drainers lodge a start of work notice with Access Canberra and pay the fee before beginning work, make the work available for inspection, and notify completion when or before they book the final inspection. Commercial plumbing and drainage needs plan approval from a licensed plumbing plan certifier, and certified final plans must be registered before a final inspection can be booked. Minor work, meaning repairs and replacements up to a value of one thousand dollars, sits outside plan approval; it still has to be done by a licensed plumber and drainer, and only a hydraulic certificate of compliance (the minor works certificate, lodged online) is needed. One line saying you handle the notices and certificates is enough.
Icon Water runs Canberra's water and sewerage network. Its responsibility includes the sewer tie, where private plumbing joins the network along the lease boundary, usually marked by a sewer riser; blockages on the private side are the leaseholder's. When a licensed plumber finds the fault is in Icon's network, Icon reimburses the cost of hiring the plumber under its published rates, and the claim needs a detailed invoice made out to Icon Water and an Icon job reference number. Icon has also put its underground water and sewer pipes on ACTmapi, the ACT Government's online map, though pipes inside individual properties aren't shown.
Cold snaps split pipes. The Bureau of Meteorology's summary for winter 2025 has Canberra Airport's mean daily minimum at −0.1°C, its coldest morning at −7.6°C on 21 June and Tuggeranong (Isabella Plains) at −7.8°C the next morning. Pipes that burst that weekend closed Charnwood-Dunlop School and Giralang Preschool on the Monday, and cracked or burst pipes were found at other schools from Lanyon to Red Hill. Tree roots cause trouble all year: Icon names them as a major cause of blockages and says that once roots break into a pipe they keep growing until it blocks, and under the Urban Forest Act 2023 every tree on public land is protected, along with larger trees on private land.
Across the border, Queanbeyan-Palerang Regional Council maintains the water and sewer network in Queanbeyan and buys its drinking water from Icon Water, so a fault in the main there is for the council to fix, not Icon. Googong homes also have a purple pipe carrying recycled water from the council's Googong Water Recycling Plant for toilets, lawns and gardens, and the council's guide for residents tells them to use a licensed plumber with backflow accreditation for all future plumbing work and to have a plumber test the non-drinking water system after any building work. NSW licensing applies on that side, which our Sydney plumbers page sets out. We're an Adelaide team on Hutt St and work with Canberra businesses by phone and email. We haven't built for an ACT business yet; our current clients are in SA, NSW, VIC and QLD.