AHCWAT504 — Design water treatment systems

1 Determine design requirements

• 1.1Determine the quality of water to be treated and level of treatment required to meet water treatment system quality requirements
• 1.2Develop construction specifications that define the work required to treat water
• 1.3Identify and protect environmentally sensitive areas according to local, state and federal legislation and regulations
• 1.4Document design calculations and requirements

2 Determine pumping and power system requirements

• 2.1Identify and select pumps that can treat water efficiently and at the flow and the pressure required to operate the distribution system
• 2.2Select pump and pump motor combinations that are efficient, reliable, functional, serviceable and flexible for the intended application
• 2.3Determine energy requirements and layout of electricity lines, and check with local authorities
• 2.4Optimise the relationship between capital and operational costs, and compare energy sources
• 2.5Select structures, valves and accessories and integrate into a functional system that can be monitored and maintained
• 2.6Document performance indicators, design calculations and decisions
• 2.7Design construction specifications that define the work required to make a suitable pumping and power system

3 Design a water treatment system

• 3.1Evaluate treatment systems and design with respect to a range of key variables
• 3.2Size pipes, valves and fittings according to design system specifications so that capital cost is balanced against operation costs over the anticipated system life
• 3.3Calculate and document flows, water levels and pressures so that they are within the acceptable tolerances for optimum performance
• 3.4Confirm that flows, water levels and pressures are achievable by the pumps operating at optimum efficiency
• 3.5Include mechanisms for controlling and adjusting pressure in system design

4 Determine capital expense budget

• 4.1Document design calculations and decisions, and communicate relevant information through plans, specifications and manuals
• 4.2Determine and document materials required from plans and specifications
• 4.3Estimate labour requirements based upon documented work schedule with reasonable allowance for variances in work schedules
• 4.4Base costing attributed to each component on quoted information from suppliers, or sound analysis of individual elements
• 4.5Document capital expense budget
• 4.6Confirm design and capital expense budget output with an appropriately experienced and qualified person

5 Determine operating expense budget

• 5.1Calculate an operating expense budget that includes all expenses applicable to the completed system
• 5.2Document operating expense budget

What does an assessment tool for AHCWAT504 need to cover?

To satisfy the Principles of Assessment and Rules of Evidence, an assessment for AHCWAT504 needs to address all 44 unit components: 5 elements with 24 performance criteria, 6 performance evidence requirements, 10 knowledge evidence requirements, and the foundation skills. A coverage matrix mapping each question and task to these components is what an auditor looks for.

How does Auditori generate an assessment tool for AHCWAT504?

Auditori pulls the current release of AHCWAT504 from training.gov.au and generates a complete package: candidate assessment, assessor guide with model answers and observation criteria, and a coverage matrix mapping every component. A suitably qualified person then reviews and approves the draft in a built-in workflow — consistent with ASQA's guidance on AI use in VET — before export as branded PDF and editable Word.

Is the first assessment tool really free?

Yes. Every new account includes one free credit — enough to generate the complete assessment tool for AHCWAT504 — with no card and no subscription required. After that it's pay-as-you-go per unit.

Can I check my existing AHCWAT504 assessment instead of generating a new one?

Yes — upload your existing assessment or learner guide and Auditori maps it against every element, performance criterion, PE and KE of AHCWAT504, showing exactly what's covered and what's missing. Mapping costs a quarter of a credit.