Product Overview

Summary: This Plumbing Systems Assessment Safe Operating Procedure provides a structured, WHS-aligned approach for inspecting and testing plumbing systems in Australian workplaces and facilities. It helps businesses identify defects, safety risks, and non-compliance issues early, reducing disruption, protecting workers and occupants, and supporting long-term asset performance.

Plumbing systems are critical to the health, safety and functionality of any Australian workplace or facility, yet they are often only noticed when something goes wrong. This Plumbing Systems Assessment SOP sets out a clear, repeatable process for inspecting, testing and documenting the condition and performance of water, sewer, stormwater, gas and associated plumbing infrastructure. It guides assessors through pre-assessment planning, on-site safety controls, systematic inspection methods, functional testing, and reporting so that risks are identified and controlled before they escalate into incidents, water damage, contamination, or service outages.

Developed with Australian WHS obligations and industry standards in mind, this procedure helps organisations demonstrate due diligence in managing plumbing-related hazards such as leaks, cross-connections, scalding risks, Legionella growth, gas leaks, and structural damage from poor drainage. It also supports better budgeting and asset management by standardising how defects are classified, prioritised and tracked over time. Whether you manage a single commercial building or a large portfolio of sites, implementing this SOP will lift the consistency, safety and compliance of your plumbing assessments across the board.

Key Benefits

• Ensure plumbing assessments are conducted consistently, safely and in line with Australian WHS and plumbing regulations.
• Reduce the likelihood of water damage, contamination incidents, gas leaks and unplanned service disruptions through proactive identification of defects.
• Support compliance with duty-of-care obligations by documenting hazards, control measures and rectification priorities in a defensible manner.
• Streamline communication between plumbers, facility managers and senior management with clear, standardised assessment reports and risk ratings.
• Optimise maintenance planning and capital works by providing structured data on asset condition, lifecycle risks and recommended interventions.

Who is this for?

• Licensed Plumbers
• Plumbing Team Leaders
• Maintenance Supervisors
• Facility Managers
• Property and Asset Managers
• WHS Managers and Advisors
• Construction Project Managers
• Strata and Building Managers
• Local Government Infrastructure Officers

Hazards Addressed

• Exposure to biological hazards in wastewater and sewer systems (e.g. pathogens, sewage overflows)
• Risk of slips, trips and falls due to wet surfaces, leaks or overflows during inspections
• Scalding and burns from hot water systems and steam lines
• Gas leaks from LPG or natural gas installations and associated explosion or asphyxiation risks
• Legionella and other waterborne pathogens in warm water systems, cooling towers and dead legs
• Structural damage and collapse risks associated with long-term leaks or inadequate drainage
• Electrical shock risks where plumbing is in close proximity to electrical installations or equipment
• Manual handling injuries from lifting and moving access covers, pumps, cylinders and equipment
• Confined space hazards when assessing pits, tanks, crawl spaces and plant rooms
• Chemical exposure from water treatment chemicals, descalers, cleaners and sealants

Included Sections

• 1.0 Purpose and Scope
• 2.0 References, Standards and Legislative Requirements
• 3.0 Definitions and Terminology
• 4.0 Roles, Responsibilities and Competency Requirements
• 5.0 WHS and Risk Management Requirements
• 6.0 Pre-Assessment Planning and Site Preparation
• 7.0 Required Tools, Equipment and Personal Protective Equipment (PPE)
• 8.0 Plumbing Systems Overview (Water, Sewer, Stormwater, Gas and Ancillary Systems)
• 9.0 General Safety Precautions and Isolation Procedures
• 10.0 Step-by-Step Plumbing Systems Assessment Procedure
• 11.0 Inspection Checklists by System Type (Water, Sewer, Stormwater, Gas, Hot Water, Backflow, Roof Drainage)
• 12.0 Functional Testing Procedures (Pressure, Flow, Backflow, Leak Detection, Temperature)
• 13.0 Hazard Identification, Risk Assessment and Control Measures
• 14.0 Confined Space and High-Risk Area Assessment Requirements
• 15.0 Environmental Considerations (Discharge, Waste Handling, Spill Prevention)
• 16.0 Documentation, Reporting and Risk Rating of Defects
• 17.0 Communication of Findings and Rectification Planning
• 18.0 Emergency Response Actions for Critical Defects (Gas Leaks, Major Bursts, Sewage Overflows)
• 19.0 Training, Competency and Review Requirements
• 20.0 Recordkeeping, Version Control and Continuous Improvement

Legislation & References

• Plumbing Code of Australia (PCA) – as part of the National Construction Code (NCC)
• AS/NZS 3500 Plumbing and drainage (series)
• AS/NZS 5601 Gas installations (series)
• AS 3740 Waterproofing of domestic wet areas
• AS/NZS 3666 Air-handling and water systems of buildings – Microbial control (Legionella control)
• Safe Work Australia – Model Work Health and Safety Regulations
• Safe Work Australia – Code of Practice: Managing the Work Environment and Facilities
• Safe Work Australia – Code of Practice: Confined Spaces
• Safe Work Australia – Code of Practice: Hazardous Manual Tasks
• State and Territory Plumbing and Drainage Acts and Regulations (e.g. NSW Plumbing and Drainage Act, Victorian Plumbing Regulations)