Product Overview

Summary: This Water Quality Testing Safe Operating Procedure sets out a clear, repeatable method for sampling and analysing water to protect worker health, the environment, and end users. It helps Australian businesses demonstrate due diligence, meet regulatory obligations, and quickly identify contamination issues before they escalate into WHS incidents, product failures, or regulatory breaches.

Water quality directly affects worker health, product safety, and environmental compliance across a wide range of Australian industries—from manufacturing and food processing to healthcare, education, and local government. This Water Quality Testing Safe Operating Procedure provides a structured, end-to-end framework for how water samples are planned, collected, handled, tested, interpreted, and recorded. It is designed to minimise the risk of contamination, mis-sampling and misinterpretation, which can otherwise lead to outbreaks of illness, equipment damage, reputational harm, and breaches of WHS and environmental law.

The SOP clearly defines responsibilities, sampling locations and frequencies, chain-of-custody requirements, and step-by-step testing methods for key parameters such as microbiological contaminants, pH, turbidity, temperature, conductivity, and chemical residues relevant to your operations. It also embeds WHS controls for handling chemicals, biological hazards and laboratory equipment, and links test results to practical corrective actions and escalation processes. By implementing this SOP, businesses can standardise their approach across multiple sites, support compliance with Australian standards and guidelines, and provide defensible evidence during audits, inspections, or incident investigations.

Key Benefits

• Ensure consistent, defensible water sampling and testing practices across all sites and shifts.
• Reduce the risk of waterborne illness, chemical exposure and related WHS incidents affecting workers and building occupants.
• Demonstrate compliance with Australian water quality, environmental and WHS requirements during audits and regulator inspections.
• Streamline communication between operations, laboratories, WHS and management through clear roles, forms and reporting requirements.
• Enable timely corrective actions by linking test results to predefined triggers, escalation pathways and control measures.

Who is this for?

• WHS Managers
• Environmental Health Officers
• Laboratory Technicians
• Quality Assurance Managers
• Water Treatment Plant Operators
• Facility Managers
• Food and Beverage Production Managers
• Maintenance Supervisors
• Site Supervisors
• Aquaculture and Agriculture Managers

Hazards Addressed

• Exposure to microbiological contaminants such as Legionella and E. coli in workplace water systems
• Exposure to harmful chemicals, heavy metals or process additives in potable or process water
• Illness from ingesting or contacting contaminated drinking water or eye-wash/shower systems
• Aerosolised water risks from cooling towers, showers, spas and decorative fountains
• Chemical handling risks from reagents, preservatives and disinfectants used in testing
• Glassware and sharp object injuries in laboratory or field-testing environments
• Thermal burns or scalds from hot water sampling points
• Slips, trips and falls around wet surfaces during sampling activities

Included Sections

• 1.0 Purpose and Scope
• 2.0 References, Definitions and Abbreviations
• 3.0 Roles and Responsibilities
• 4.0 Water Systems Overview and Sampling Locations
• 5.0 Risk Assessment and Hazard Identification
• 6.0 Required Equipment, Test Kits and Personal Protective Equipment (PPE)
• 7.0 Sampling Plan – Frequencies, Types and Volumes
• 8.0 Sample Collection Procedures (Field Sampling)
• 9.0 Sample Preservation, Labelling and Chain of Custody
• 10.0 Transport, Storage and Holding Times for Samples
• 11.0 On-site Testing Procedures (e.g. pH, temperature, conductivity, chlorine)
• 12.0 Laboratory Testing Procedures and External Laboratory Coordination
• 13.0 Quality Control, Calibration and Validation of Test Methods
• 14.0 Data Recording, Trending and Result Interpretation
• 15.0 Action Limits, Non-conformance Management and Corrective Actions
• 16.0 Communication, Reporting and Regulatory Notification Requirements
• 17.0 Health and Safety Precautions for Sampling and Testing Activities
• 18.0 Emergency Procedures for Exposure, Spills and Incidents
• 19.0 Training, Competency and Authorisation of Personnel
• 20.0 Document Control, Review and Continuous Improvement

Legislation & References

• Work Health and Safety Act 2011 (Cth) and equivalent state and territory WHS Acts
• Work Health and Safety Regulations 2011 (Cth) and equivalent state and territory WHS Regulations
• Safe Work Australia – Model Code of Practice: Managing the Work Environment and Facilities
• AS/NZS 5667 Water quality – Sampling (series)
• AS/NZS 4020 Testing of products for use in contact with drinking water
• AS 3498 Authorisation requirements for plumbing products – Water heaters and hot-water storage tanks
• NHMRC Australian Drinking Water Guidelines
• Public Health and Wellbeing Regulations or equivalent state-based public health legislation
• Environment Protection Acts and Regulations (state and territory specific) relating to water discharges