Apprenticeship structure, provincial licensing, wage progression, gas fitter specialty, and Job Bank's outlook for plumbers in 2026.
Job Bank projects a moderate risk of labour shortage for plumbers nationally over 2024–2033, and its 2025–2027 outlooks for the provinces range from Good in New Brunswick, Nova Scotia and Prince Edward Island to Very limited in Quebec. Job Bank reports a low of $21.00/hr, a median of $34.00/hr and a high of $46.00/hr for plumbers in Canada (NOC 72300, which includes apprentices; 2023–2024 wages).
This guide provides a complete overview of the 306A Plumber apprenticeship in Canada: what the trade involves, how to register, the period-by-period training structure, wage progression, provincial licensing requirements, and the specialty career paths open to journey plumbers.
Most pay figures on this page are Government of Canada Job Bank data for everyone working in the occupation, not only certified tradespeople. The 306A exam is 125 questions in 4 hours. The pass mark is 70%, which is 88 correct answers; SkilledTradesBC rounds results up from 69.5%, so 87 correct also passes there.
See what the questions look like — 130 free 306A practice questions → No account, no sign-up.
Plumbers install, maintain, and repair systems that move water, gas, waste, and steam through buildings and infrastructure. The work varies significantly depending on the sector:
Residential plumbers install water supply systems, drain-waste-vent (DWV) systems, and fixtures in new homes, condominiums, and townhouses, and perform repairs and renovations in existing homes. Residential rough-in work involves installing drain pipes and water supply lines before walls are closed, followed by trim-out work installing toilets, sinks, tubs, showers, water heaters, and appliances. Residential plumbers must be familiar with the National Plumbing Code (NPC) as adopted by their province, local municipal amendments, and provincial health authority requirements for potable water systems.
Commercial plumbers work on office buildings, retail spaces, schools, hospitals, hotels, and multi-unit residential buildings. Commercial work involves larger-diameter pipe, more complex DWV systems, backflow prevention devices, grease interceptors, medical gas systems (in healthcare), and commercial water heating (storage, instantaneous, and heat pump water heaters). Many commercial plumbers also install domestic fire suppression systems and must coordinate closely with other mechanical trades (HVAC, sprinkler, gas) during construction.
Industrial plumbers work in manufacturing plants, resource extraction facilities, food processing, and chemical processing environments. Industrial plumbing involves process piping (beyond the typical DWV and domestic water scope), high-pressure systems, steam distribution, compressed air, specialized materials (stainless steel, CPVC, Hastelloy), and strict hygiene requirements in food and pharmaceutical applications. Industrial plumbers often work closely with millwrights and industrial electricians on process plant installations and turnarounds.
The 306A Plumber apprenticeship structure varies by province, and each province's apprenticeship authority publishes its own requirements. The three below were checked in October 2026.
| Province | On-the-job training | Technical training | Source |
|---|---|---|---|
| Ontario | 8,280 hours (9,000 in all, approximately five years) | 720 hours across 3 levels | Skilled Trades Ontario |
| British Columbia | 6,300 hours | 30 weeks over 4 years | SkilledTradesBC |
| Alberta | 1,560 hours in each of 4 periods | 8 weeks in each period | Alberta Tradesecrets |
Plumbing in Ontario is regulated by Skilled Trades Ontario (STO). The Plumber trade is a compulsory trade in Ontario — you must be either a registered apprentice or a licensed journeyperson to legally work as a plumber. All plumbing work is also subject to inspection under the Ontario Building Code. Register your apprenticeship through Ontario's apprenticeship portal. Skilled Trades Ontario sets the program at 9,000 hours (approximately five years): 8,280 hours of on-the-job training plus 720 hours of in-school training across 3 levels. Technical training is delivered through Ontario colleges (Algonquin, Humber, George Brown, Mohawk, etc.).
Plumbing in BC is regulated by SkilledTradesBC. Plumber is a Red Seal trade in BC, but SkilledTradesBC does not list it as a Skilled Trades Certification (compulsory) trade. BC's program is 6,300 hours of work-based training plus 30 weeks of technical training over 4 years. Technical training is delivered through institutions such as BCIT, Camosun College, and the College of New Caledonia. BC plumbers must also be familiar with the BC Plumbing Code (a provincial amendment of the NPC).
The Plumber trade in Alberta is administered by Alberta Apprenticeship and Industry Training. The Plumber is a designated trade in Alberta — journeyperson certification is required to work at journeyperson level. Alberta AIT oversees the apprenticeship registration, period advancement, and Red Seal exam eligibility. Technical training is delivered through NAIT, SAIT, and regional polytechnics.
| Period | Alberta legal minimum (% of journeyperson rate) |
|---|---|
| Period 1 | 50% |
| Period 2 | 60% |
| Period 3 | 70% |
| Period 4 | 80% |
Alberta apprentices must be paid at least these percentages of the rate of the lowest-paid Plumber journeyperson at the same company (Alberta Tradesecrets, Plumber trade profile, checked September 2026). For comparison, Job Bank's low / median / high hourly wages for all plumbers, including apprentices, are $20.00 / $32.50 / $50.38 in Ontario, $23.00 / $32.00 / $48.00 in BC and $20.00 / $30.00 / $43.00 in Alberta (2023–2024 reference period, updated November 19, 2025). We could not confirm a published apprentice wage schedule for Ontario or BC — ask your employer or union local.
Journeyperson rates vary by employer and, for union members, by collective agreement; Job Bank does not publish a union and non-union split.
Red Seal's breakdown spreads the 306A Plumber interprovincial exam's 125 questions over seven Major Work Activities:
Job Bank projects a moderate risk of labour shortage for plumbers nationally over 2024–2033 (Job Bank's outlook for each province is in the FAQ at the end of this page). Some of the factors behind the work:
CMHC estimates Canada needs to build 3.5 million additional homes above the current pace by 2030 to restore affordability. Every new home needs plumbing rough-in and trim-out. BuildForce Canada, however, expects residential construction investment to contract between 2026 and 2028 before growth returns later in the decade.
ESDC's projections for 2024–2033 count about 6,800 retirements among Canada's roughly 59,900 plumbers (2023 employment) and about 22,800 job openings in all, against about 24,000 job seekers, and rate the risk of shortage as moderate.
Whether gas fitting needs a licence of its own depends on the province. Red Seal plumbers who also hold a gas fitter license can take on a wider range of work. Job Bank projects a moderate risk of labour shortage for gas fitters nationally over 2024–2033, but rates the 2025–2027 outlook as Limited in BC and Very limited in Quebec. In Alberta, a Gasfitter – Class B works on natural gas and propane equipment up to 400,000 BTUs, from residential furnaces to industrial boilers of that size, and Class A certification is required for appliances above 400,000 BTUs. In BC, the Gas Fitter trades are similarly tiered. In Ontario, gas work requires a certificate under Ontario Regulation 215/01, such as a gas technician certificate (G.1, G.2 or G.3); a G.2 covers natural gas and propane appliances with an input of 400,000 Btuh or less. We found no official figure for a pay premium for gas qualifications; Job Bank's 2023–2024 national median is $40.00/hr for gas fitters (NOC 72302) versus $34.00/hr for plumbers (NOC 72300). In Alberta, the Plumber apprenticeship includes Gasfitter – Class B certification.
Fire suppression (sprinkler) installation overlaps with plumbing. Red Seal's 2023 Plumber standard lists potable water fire protection systems as a task of their own (G-20), marked Not Common Core, so it carries no questions on the Red Seal exam. Job Bank places sprinkler system installers in a separate occupation (NOC 72301, steamfitters, pipefitters and sprinkler system installers), and ESDC expects labour demand and supply for it to be broadly in line over 2024–2033.
Journey plumbers also work on process piping in industrial environments — connecting manufacturing equipment, chemical systems, food and beverage processing lines, or pharmaceutical clean rooms; process piping systems are a task of their own in Red Seal's standard (G-19, 5 of the 125 exam questions). This work can involve exotic materials (316L stainless, high-purity polypropylene, PVDF), orbital welding for sanitary connections, and strict documentation and testing requirements. Industrial plumbing positions at chemical plants, refineries, and pharmaceutical manufacturing facilities pay rates set by the employer or collective agreement, sometimes with shift premiums; Job Bank does not break out industrial work, and its national high wage for plumbers is $46.00/hr (2023–2024 wages).
Experienced journey plumbers can transition into plumbing inspection roles with municipalities, regional districts, or private inspection firms. The qualifications an inspector needs are set by the province and the employer, so check the posting and your province's building official rules.
Some plumbers work under a collective agreement negotiated by a union local, such as a local of the United Association (UA); others are paid by non-union contractors. Job Bank does not publish a union and non-union wage split, so compare the collective agreement or the employer's offer directly.
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Start 306A Practice →It depends on the province. Skilled Trades Ontario sets the 306A Plumber apprenticeship at 9,000 hours (approximately five years): 8,280 hours of on-the-job work experience and 720 hours of in-school training across 3 levels. In British Columbia it is 6,300 hours of work-based training plus 30 weeks of technical training over 4 years (SkilledTradesBC). In Alberta it is 4 periods, each designed to take about a year, with 1,560 hours of work experience and 8 weeks of classroom instruction in each period (Alberta Tradesecrets). Most provinces and territories use the Red Seal exam as the final certification exam (red-seal.ca); in Alberta it is an option in the final period. Plumber is designated Red Seal in all ten provinces and three territories, and Red Seal says the endorsement facilitates labour mobility.
It depends on the province, so check with yours. In Alberta, Gasfitter is its own trade: Class A certification is required to work on appliances exceeding 400,000 BTUs, and Class B covers equipment from residential furnaces to industrial boilers not exceeding 400,000 BTUs; Alberta's Plumber apprenticeship includes Gasfitter – Class B certification, so apprentices who complete it receive both journeyperson certificates. In British Columbia, Gasfitter – Class A is a separate Skilled Trades Certification trade administered by SkilledTradesBC, and gas fitters must also be certified by Technical Safety BC. In Ontario, gas work requires a certificate under Ontario Regulation 215/01, such as a gas technician certificate (G.1, G.2 or G.3); a G.2 covers natural gas and propane appliances with an input of 400,000 Btuh or less.
It depends on where you work. Job Bank projects a moderate risk of labour shortage for plumbers (NOC 72300) nationally over 2024–2033. Its 2025–2027 outlooks for the provinces (updated December 2025) are Good in New Brunswick, Nova Scotia and Prince Edward Island, Moderate in Ontario, Saskatchewan and Alberta, Limited in British Columbia, Manitoba and Newfoundland and Labrador, and Very limited in Quebec.
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