Introduction to Safety Procedures for Water Damage Work

Before you unload a single dehumidifier or unroll a metre of containment, you stop. That is not a suggestion and it is not a formality you tick off to keep the paperwork tidy. The initial hazard assessment is the work. Everything else that happens on that job depends on what you find in those first ten minutes, and if you rush past it because the insurer's assessor is already on the phone asking when drying will start, you are setting yourself up for a serious incident. Develop a site entry checklist and use it on every single job, regardless of how straightforward the loss looks from the street. A burst flexi-hose in a bathroom looks nothing like a sewage backup, but both of them can kill you if you walk in without thinking first.

Electrical is the first thing you check and the one that will not give you a second chance if you get it wrong. In a flooded zone, every circuit, every power point, every light fitting is live until a licensed electrician has confirmed isolation in writing. Not verbally. Not because the homeowner says they flicked the breaker. In writing. A typical scenario: you arrive at a ground-floor unit, water is sitting across the kitchen and laundry, and the owner meets you at the door saying, "I've already turned it off at the switchboard, mate, you're right to go." That is not confirmation. You do not enter that wet zone with equipment until you have written sign-off from a licensed electrician. While you are waiting, use that time to walk the perimeter, photograph the extent of the loss, and start your scope notes. The assessment continues; the wet work does not start.

Structural and biological hazards run alongside the electrical risk, not after it. Water-saturated plasterboard ceilings can come down without any warning at all, and a wall that looks intact can be holding litres of water behind the lining. Probe and assess before you commit your body weight or your team's position to any area that has been saturated. On the biological side, if there is any indication the water source is Category 2 or Category 3, meaning grey water or sewage-contaminated water, your PPE goes on before you cross the threshold, not once you have had a look around. A common mistake is assuming a Category 2 or 3 loss will smell obviously bad. It often does not, especially in the first hours. If the source is a blocked drain, a toilet overflow, or an external stormwater intrusion, treat it as contaminated until you have reason to conclude otherwise. Chemical contamination follows the same logic: look for any sign of stored chemicals, fuel, fertiliser, or industrial substances that the floodwater may have picked up and distributed through the space.

Subfloors and pits deserve their own moment of attention because they are where people get into serious trouble fast. Any subfloor space that has been flooded must be treated as a confined space until a competent person with calibrated gas detection equipment has tested the atmosphere. Oxygen depletion and toxic gas accumulation are not visible and they are not something you can smell your way out of in time. The model WHS Regulations are clear on this under the confined spaces provisions, and the practical reality matches the regulation: a flooded subfloor is a confined space, full stop. If you do not have the equipment or the competency to test it yourself, you do not send anyone in, and you do not go in yourself. You bring in someone who can. The ten minutes you spend working through your site entry checklist before any equipment comes off the truck is the single most valuable ten minutes of the job.