Role overview
Drainers are specialised tradespeople who focus on designing, installing and maintaining below-ground drainage and sewerage systems in Australia. They work with pipes, fittings and fixtures that handle wastewater, sewerage and stormwater disposal. Their work is critical for public health and environmental protection, ensuring proper waste removal and preventing contamination.
This occupation requires technical knowledge of drainage principles, materials and local regulations. Drainers typically work on both residential and commercial projects, from house foundations to large-scale civil infrastructure. The role is classified under OSCA as a Skill Level 3 occupation, indicating it requires a certificate IV level qualification or equivalent experience.
Key tasks in practice
Drainers perform various specialised tasks related to subsurface water management:
- Interpreting technical drawings and specifications to plan drainage system layouts and determine material requirements
- Installing complete below-ground drainage systems including pipes, junctions and inspection points
- Setting up sewerage and effluent pumping equipment along with appropriate disposal systems
- Conducting pressure tests and maintenance checks to ensure systems function correctly
- Clearing blockages and performing repairs on existing drainage infrastructure
- Inspecting and maintaining septic systems and other effluent disposal solutions
Skill level explanation
OSCA classifies Drainers at Skill Level 3, which typically requires an AQF Certificate IV or III with at least two years of on-the-job training. This indicates the occupation involves complex technical tasks requiring substantial theoretical knowledge and practical skills.
In practical terms, Skill Level 3 occupations like draining require the ability to interpret technical documents, solve complex problems, and work to precise standards. Drainers must understand hydraulic principles, building codes, and safety regulations. The skill level reflects that this is a trade qualification requiring formal training and assessment, not an entry-level position.
Industry context
Drainers primarily work in the construction industry, particularly in plumbing services (ANZSIC 3231) and building completion services. They are also employed by civil engineering firms working on infrastructure projects, and by local governments maintaining public drainage systems.
The occupation has crossovers with several ANZSIC industries including water supply and irrigation services (2812), waste treatment and disposal services (2921), and other construction services (3109). Drainers may work as subcontractors to builders, directly for property owners, or as part of maintenance teams for commercial and industrial facilities.