Septic Tank Installation (Conventional) SWMS
Safe work method statement for the excavation, installation, and commissioning of conventional septic tanks and absorption trenches including council approval, confined space, and effluent management.
SWMS variants reference your state’s WHS legislation. Instant download after payment.
Installation of conventional septic tanks and absorption trenches involves excavation over 1.5m, tank lowering, plumbing connections, and commissioning. Work triggers WHS Regulation 2025 Part 4.3 (excavation), Part 4.5 (plant), and council approval under state Plumbing Regulations. SWMS required where excavation depth or confined space entry applies.
Hazards identified
3 hazards covered, sorted by priority.
Worker buried, crush injury or asphyxiation
Asphyxiation from sewer gases (H2S, methane)
Fatal crush from suspended load
Control measures
Hierarchy-of-controls order: elimination → substitution → isolation → engineering → administrative → PPE.
- 1Bench, batter or shore excavations over 1.5m per AS 5100 and geotech advice.
- 2Treat tank interior as permit-required confined space; gas test, ventilate, standby person, retrieval harness.
- 3Use rated lifting gear, exclusion zone, tag lines and licensed dogger for tank placement.
- 4Engage licensed plumber and obtain council/PCA approval before commissioning.
Applicable Codes of Practice
Design and installation standard for septic systems
Trench shoring and ground collapse prevention
What you receive
- ✓Editable DOCX SWMS customisable to site and project
- ✓State-specific WHS legislation and Plumbing Regulation schedule
- ✓Hazard and risk register with residual risk scoring
- ✓Worker sign-on and daily review register
Related legislation
- WHS Regulation 2025 Part 4.3 Excavation
- WHS Regulation 2025 Part 4.3 Confined Spaces
- Plumbing Code of Australia (PCA) Volume 3