CARSI Water Restoration Practitioner

Scenario and figures are illustrative.

On the job

A property manager in Brisbane rings on a Monday morning. A ground-floor unit lost a flexible hose under the kitchen sink some time over the weekend, and the tenant has just reported it. Water has tracked from the kitchen along a timber-look floor into the hallway and under the skirting. The manager wants to know what will happen, how long it will take and what it will cost. Your first job is not to start drying — it is to size the loss, make it safe and set expectations.

The idea

Welcome to the CARSI Water Restoration Practitioner course. It is written for technicians, supervisors, cleaners and insurance-support staff who attend water-damaged buildings and contents in Australia. By the end you will be able to describe what professional water damage restoration is and why a structured process matters; categorise water by likely contamination (Category 1, 2 and 3) and describe how the extent of intrusion is classified; identify site hazards and select personal protective equipment (PPE) by the hazard in front of you rather than by habit; take and interpret moisture readings with metric instruments and set a defensible dry goal; explain the principles of structural drying and size equipment with realistic power awareness at 230 V / 10 A; and produce documentation that stands up in an Australian insurance and dispute context.

The course is built for Australian conditions throughout. That means Australian English, 230 V / 50 Hz power delivered through 10 A general power outlets (GPOs) protected by a residual current device (RCD, or safety switch), metric measurement, Australian standards and regulators (AS/NZS, Safe Work Australia and your state work-health-and-safety regulator), and Australian building types, climate and job realities. It supports good judgement. It is no substitute for your own certification, a manufacturer’s instructions, a Safety Data Sheet (SDS), a relevant Australian standard, or a site’s own rules. Where a standard is named, it is named only (for example, aligned to the principles in ANSI/IICRC S500:2025); its text is not reproduced.

See it

The roadmap shows how the six modules build on one another, from first principles to a complete, defensible job file.

Do it in metric

Size the Brisbane loss before you quote anything. The kitchen is 4.2 m × 3.0 m = 12.6 m². Water has also tracked into a hallway 3.5 m × 1.0 m = 3.5 m². The affected floor area is therefore about 12.6 + 3.5 = 16.1 m². You record the ambient air on arrival at 24 °C and 70 %RH. These two numbers — affected area in m² and the starting air condition — are the first entries in the job file and the basis of every later decision.

Field download

The First-attendance roadmap card lists the order of the first hour on site: make safe, size the loss in m², record the air condition, identify the water, and set expectations with the customer. Keep it in the van.

Check yourself

The module check asks: what is the first task on arrival; which metric figure sizes the loss; and why you record the starting air condition. Each answer carries a short practitioner “why”.

Takeaway

Restoration starts with sizing and safety, not with machines. Record the affected area in m² and the air condition at the first attendance. Next lesson: how the restoration mindset turns these first numbers into a repeatable process.

Sources for this lesson

• ANSI/IICRC S500:2025 (cited by name only; no text reproduced).
• NSW Government, Voltage optimisation fact sheet. Read 02/11/2026.
• Ausgrid, Electricity Safety: Electrical equipment. Read 02/11/2026.
• WorkSafe ACT, Residual current devices. Read 02/11/2026.