Occupation Title DRAINER (AUS) / DRAINLAYER (NZ) ANZSCO Code 334113 Occupations in this Group 334111 Plumber (General) 334112 Airconditioning and Mechanical Services Plumber 334113 Drainer (Aus) / Drainlayer (NZ) 334114 Gasfitter 334115 Roof Plumber Description Installs, maintains and designs below-ground drainage systems and associated sewerage or effluent disposal systems. Registration or licensing is required. Skill Level 3 Specialisation Septic Tank …