BlueSafe
Water Treatment Plant Risk Assessment

Water Treatment Plant Risk Assessment

  • • 100% Compliant with Australian WHS Acts & Regulations
  • • Fully Editable MS Word & PDF Formats Included
  • • Pre-filled Content – Ready to Deploy Immediately
  • • Customisable – Easily Add Your Logo & Site Details
  • • Includes 2 Years of Free Compliance Updates

Water Treatment Plant Risk Assessment

Product Overview

Identify and control organisational risks associated with Water Treatment Plant operations using this management-level Risk Assessment, focused on governance, systems, and whole-of-business WHS performance. This document supports compliance with the WHS Act, demonstrates executive Due Diligence, and helps reduce operational liability across your treatment assets and activities.

Risk Categories & Hazards Covered

This document assesses risks and outlines management controls for:

  • Governance, WHS Leadership and Due Diligence: Assessment of board, executive and senior management responsibilities, safety leadership behaviours, and verification of WHS performance in water treatment operations.
  • WHS Risk Management and Change Management Systems: Management of enterprise risk frameworks, hazard identification processes, change management for plant upgrades, and integration of risk registers into business planning.
  • Plant, Equipment and Asset Integrity Management: Evaluation of lifecycle asset management, inspection and maintenance programs, guarding, isolation systems, and reliability of critical treatment infrastructure.
  • Process Safety and Chemical Management: Assessment of chemical storage and dosing systems, hazardous chemicals registers, SDS management, bunding, ventilation, and process control safeguards to prevent loss-of-containment events.
  • Biological, Water Quality and Public Health Risk Management: Management of microbiological hazards, disinfection processes, monitoring programs, and controls to protect operators, contractors and community water users.
  • Confined Spaces, Tanks and Sludge Pond Access Management: Protocols for confined space identification, permitting, atmospheric testing, rescue planning, and engineered access systems for tanks, pits and lagoons.
  • Electrical Safety, Instrumentation and Control Systems: Assessment of electrical installations, lockout/tagout procedures, arc flash risks, and reliability of SCADA, alarms and interlocks for safe plant operation.
  • Traffic, Mobile Plant and Materials Handling: Management of internal traffic flows, segregation of pedestrians and vehicles, loading/unloading controls, and safe handling of bulk chemicals and consumables.
  • Contractor, Alliance Partner and Visitor WHS Management: Systems for prequalification, inductions, permit-to-work, supervision and performance monitoring of contractors, alliance partners and visitors on site.
  • Training, Competency and Supervision: Evaluation of competency frameworks, licences and authorisations, refresher training, and supervisory arrangements for high-risk and process-critical tasks.
  • Fatigue, Remote and Isolated Work, and Psychosocial Risks: Management of roster design, lone worker arrangements, communication systems, and organisational factors impacting mental health and wellbeing.
  • Emergency Preparedness and Incident Management: Planning for chemical spills, process upsets, fire, rescue from confined spaces, and continuity of supply, including drills, equipment and escalation protocols.
  • Documentation, Information Management and Record Keeping: Control of WHS procedures, permits, asset records, calibration reports and training evidence to support auditability and regulatory compliance.
  • Consultation, Worker Engagement and Continuous Improvement: Structures for HSRs, safety committees, toolbox talks, reporting of hazards and near misses, and systematic review of incidents and corrective actions.

Who is this for?

This Risk Assessment is designed for Business Owners, Water Utility Executives, Operations Managers and Safety Professionals responsible for planning, governing and auditing Water Treatment Plant operations and WHS performance.

Hazards & Risks Covered

Hazard Risk Description
1. Governance, WHS Leadership and Due Diligence
  • • Lack of clear WHS governance structure for multiple water treatment facilities and activities (drinking water, wastewater, recycled water, sludge ponds)
  • • Officers not exercising due diligence as required under WHS Act 2011 (no active monitoring of plant WHS performance)
  • • Insufficient allocation of resources for WHS (staffing, competent supervision, budget for controls and maintenance)
  • • Inadequate integration of WHS into corporate risk management and asset management frameworks
  • • Poor safety culture leading to under‑reporting of incidents and hazards
  • • Unclear accountability for WHS across operators, contractors, consultants and joint venture partners
2. WHS Risk Management and Change Management Systems
  • • Inconsistent identification and assessment of WHS risks across different treatment plants and processes
  • • No systematic review of risks associated with new technologies (e.g. membrane bioreactors, UV systems, chemical dosing upgrades, freshwater generators)
  • • Poor management of change (MOC) when modifying treatment processes, sludge pond configurations, or introducing recycled water schemes
  • • Failure to consider cumulative risks (e.g. chemical, biological, confined space and electrical hazards occurring concurrently)
  • • Risk assessments not reviewed following incidents, near misses or process changes
3. Plant, Equipment and Asset Integrity Management
  • • Failure of critical treatment plant assets (clarifiers, filters, membranes, UV systems, blowers, sludge pumps) leading to uncontrolled releases or exposure to hazards
  • • Inadequate inspection and maintenance of high‑risk plant (pressure vessels, chemical storage tanks, gas chlorination systems, freshwater generators)
  • • Ageing infrastructure in wastewater treatment plants and sludge ponds (corroded access platforms, unstable handrails, degraded walkways)
  • • Inadequate design of plant for safe access (poorly located valves, lack of guarding, unsafe access to screens and mixers)
  • • Uncontrolled energisation of equipment during maintenance due to ineffective isolation and lock‑out systems
  • • Failure of remote and automated systems (SCADA, telemetry) without robust backup or manual override procedures
4. Process Safety and Chemical Management
  • • Loss of containment of hazardous chemicals (chlorine gas, sodium hypochlorite, alum, caustic soda, acids, polymers, coagulants) at water and wastewater plants
  • • Inadequate engineering controls for gas chlorination, disinfection by‑products, and odour control systems
  • • Incorrect chemical dosing or incompatible chemical storage leading to toxic releases, corrosion or violent reactions
  • • Deficient chemical delivery and transfer procedures (no spill containment, poor hose management, no verification of correct tank)
  • • Inadequate ventilation and gas detection in enclosed dosing rooms or chemical storage areas
  • • Poor labelling and Safety Data Sheet (SDS) management across multiple treatment sites and mobile operations
5. Biological, Water Quality and Public Health Risk Management
  • • Exposure of workers to biological agents in wastewater, sludge ponds, recycled and non‑potable water (pathogens, aerosols, biofilms)
  • • Inadequate barriers and process controls leading to contamination of drinking water supply
  • • Failure of disinfection or treatment processes (chlorination, UV, filtration, freshwater generators) due to poor monitoring or maintenance
  • • Insufficient management of cross‑connections between potable, recycled and non‑potable systems
  • • Lack of integration between WHS, water quality and public health risk management frameworks
6. Confined Spaces, Tanks and Sludge Pond Access Management
  • • Uncontrolled entry into confined spaces (tanks, pits, wet wells, valve chambers, sludge thickeners) without proper risk assessment and entry permits
  • • Atmospheric hazards (oxygen deficiency, toxic gases such as H2S, methane) in wastewater treatment and sludge handling areas
  • • Unstable edges, embankments and soft ground conditions around sludge ponds and lagoons leading to engulfment or falls
  • • Inadequate rescue capability for incidents in confined spaces or around ponds
  • • Poor control of contractor works in confined spaces and lagoons
7. Electrical Safety, Instrumentation and Control Systems
  • • Exposure to live electrical parts during maintenance of pumps, blowers, UV systems, control panels and freshwater generators
  • • Inadequate earthing and bonding in corrosive water and wastewater environments
  • • Failure of instrumentation and control systems leading to unsafe operating conditions (e.g. over‑pressurisation, overdosing, tank overflows)
  • • Uncontrolled work on energised SCADA, telemetry and communication equipment
  • • Use of non‑compliant electrical equipment in hazardous areas (e.g. around biogas, flammable chemicals)
8. Traffic, Mobile Plant and Materials Handling
  • • Vehicle and mobile plant interactions with pedestrians at treatment plants, sludge ponds and recycling facilities
  • • Uncontrolled movements of tankers delivering chemicals or removing sludge and biosolids
  • • Poorly planned access routes for maintenance vehicles, cranes and vacuum trucks near open water and unstable edges
  • • Manual handling of heavy equipment, valves, sample containers and water testing equipment without mechanical aids
  • • Lack of consistent traffic control and signage across multiple remote sites
9. Contractor, Alliance Partner and Visitor WHS Management
  • • Contractors performing high‑risk work (confined spaces, electrical, working at heights, sludge handling) without adequate WHS systems
  • • Inconsistent induction and supervision of visiting specialists, auditors, regulators and project staff
  • • Multiple contractors working simultaneously (e.g. plant upgrades, lagoon desludging, recycled water plant commissioning) without coordination
  • • Inadequate verification of licences, competencies and insurances
  • • Poor communication of site‑specific hazards such as chemical systems, reclaimed water uses and sludge ponds
10. Training, Competency and Supervision
  • • Operators, maintenance personnel and laboratory staff not competent in complex treatment processes and associated WHS risks
  • • Insufficient training in chemical handling, biological hazards, confined space entry, sludge pond tasks and wastewater reclamation operations
  • • Supervisors lacking skills to manage WHS, lead incident investigations and enforce procedures
  • • Inadequate competency assessment for new technologies (e.g. advanced membrane filtration, UV disinfection, automation systems, freshwater generators)
  • • Failure to maintain training records and expiry dates for licences and high‑risk work authorisations
11. Fatigue, Remote and Isolated Work, and Psychosocial Risks
  • • Fatigue resulting from shift work, on‑call rosters and after‑hours response to water quality or plant alarms
  • • Workers operating alone at remote treatment plants, sludge ponds or pumping stations without reliable communication or check‑in systems
  • • Psychosocial hazards arising from high regulatory and public health responsibility, incident investigations and community complaints
  • • Exposure to aggressive behaviour from members of the public during site visits, odour complaints or recycled water scheme discussions
12. Emergency Preparedness and Incident Management
  • • Inadequate preparation for major incidents such as chemical spills, gas releases, treatment plant failures, sludge pond breaches or contamination events
  • • Poor integration between site emergency plans and local emergency services for water and wastewater treatment facilities
  • • Lack of drills for scenarios involving hazardous chemicals, confined spaces, rescues from ponds or large‑scale plant outages
  • • Ineffective incident reporting and investigation systems leading to repeat events
  • • Failure to notify regulators and stakeholders in accordance with legislative requirements
13. Documentation, Information Management and Record Keeping
  • • Critical WHS and process safety information (procedures, P&IDs, SDS, risk assessments, permits) not controlled or accessible to workers
  • • Outdated documentation used for operating advanced treatment processes or freshwater generators
  • • Inadequate record keeping for inspections, maintenance, training, incidents and compliance obligations
  • • Poor integration of WHS information across multiple systems (SCADA logs, CMMS, document control, training databases)
14. Consultation, Worker Engagement and Continuous Improvement
  • • Lack of structured consultation with operators and maintenance staff on WHS issues, system changes and new projects
  • • Low worker engagement leading to unreported hazards, near misses and unsafe practices becoming normalised
  • • Suggestion and improvement mechanisms not linked to actual change or feedback, creating cynicism and disengagement
  • • Inconsistent operation of health and safety committees across treatment plants and depots

Need to add specific hazards for your workplace?

Don't worry if a specific hazard isn't listed above. Once you purchase, simply log in to your Client Portal and add your own custom hazards at no extra cost. We take care of the hard work—creating the risk ratings and control measures for free—to ensure your document is compliant within minutes.

Legislation & References

This document was researched and developed to align with:

  • Work Health and Safety Act 2011
  • Work Health and Safety Regulations 2017
  • AS/NZS ISO 31000:2018: Risk management — Guidelines
  • Safe Work Australia – How to Manage Work Health and Safety Risks Code of Practice: Guidance on systematic identification, assessment and control of WHS risks.
  • Safe Work Australia – Managing Risks of Hazardous Chemicals in the Workplace Code of Practice: Requirements for storage, handling and use of treatment chemicals.
  • Safe Work Australia – Confined Spaces Code of Practice: Controls for entry, work and rescue in tanks, pits and enclosed structures.
  • AS 4801 / ISO 45001: Occupational health and safety management systems – requirements for systematic WHS governance.
  • AS/NZS 3000 (Wiring Rules): Electrical installations and safety of electrical systems within treatment plants.
  • AS 3780: The storage and handling of corrosive substances, including common water treatment chemicals.
  • AS 1940: The storage and handling of flammable and combustible liquids used in plant operations.
  • AS/NZS 4020: Testing of products for use in contact with drinking water, supporting water quality and public health controls.
Standard Risk Assessment Features (Click to Expand)
  • Comprehensive hazard identification for all activities
  • Risk rating matrix with likelihood and consequence analysis
  • Existing control measures evaluation
  • Residual risk assessment after controls
  • Hierarchy of controls recommendations
  • Action priority rankings
  • Review and monitoring requirements
  • Consultation and communication records
  • Legal compliance references
  • Sign-off and approval sections

$79.5

Safe Work Australia Aligned