Boost workplace safety with practical tips for using pressure washers correctly, ensuring efficient and hazard-free operation on the job.
With the use of high-pressure water, pressure washers can make heavy-duty cleaning jobs easier, but there are safety hazards, including:
- the risk of physical injury from high-pressure water
- carbon monoxide poisoning or electrical shock
- chemical exposure
- slips, trips, and falls
- flying debris
- loud noise
Wear the appropriate personal protective equipment (PPE)when pressure washing. PPE that may be beneficial includes eye protection, proper footwear with non-slip soles, gloves, hearing protection, long pants, and other protective clothing.
Always follow the manufacturer’s instructions for the pressure washer and accessories you are using. Each model may have different pressure settings, nozzle types, and operational procedures that must be followed to ensure safe use.
Because of the risks involved, only trained personnel should be operating pressure washing equipment. Do not operate a pressure washer when you are fatigued or under the influence of alcohol, drugs, or prescription medication.
The narrow stream of water that comes out of the pressure washing wand is very powerful. The force of the water can cause serious injury and penetrate the skin causing serious tissue damage. Stay alert! When the machine is turned on watch what you are doing at all times.
Always use equipment that is appropriate for the task, and never exceed the pressure recommended by the manufacturer.
Never direct the water stream at other people, unprotected skin, eyes, pets, or animals. Do not touch the nozzle or put your hand in front of the water spray while operating. Never grasp a high-pressure hose that is leaking or damaged.
Do not attempt to change nozzles while the pressure washer is running. Turn the pressure washer unit off before changing nozzles.
The force of the pressure washer can make it difficult to maintain balance, increasing the risk of falls. Use both hands to maintain a firm grip on the wand, and keep your body balanced.
Do not overreach or stand on unstable support. Keep good footing and balance at all times.
Be cautious when working on ladders, scaffolding, or elevated platforms. Use fall protection equipment if necessary and secure the ladder or platform before starting work.
Some pressure washers are electric and must be plugged into a grounded outlet.
Avoid accidental starts. Ensure the switch is in the off position before connecting or disconnecting the power cord to an electrical outlet. Always disconnect the power plug from the outlet when the pressure washer is not in use.
Never carry the pressure washer by the cord. Do not pull the cord to disconnect it from the outlet. Do not use a pressure washer with a damaged power cord.
Avoid risk of shock or electrocution when using a pressure washer. Only use electric pressure washers with ground fault circuit interrupter (GFCI) protection.
Never direct the water spray towards any electric wiring or directly towards the pressure washer machine itself.
Do not touch the plug or outlet with wet hands. Keep all electrical connections dry, off the ground, and away from standing water.
If an extension cord is required, use only heavy-duty cords rated for outdoor use. Do not use damaged extension cords. Inspect extension cords before use and replace if damaged.
Remove malfunctioning pressure washer equipment from service until repairs have been made by qualified repair personnel.
If using a gas-powered pressure washer, proper ventilation is critical. Engine exhaust contains carbon monoxide, an odorless, colorless, poisonous gas that can kill you in minutes.
Never operate gas-powered equipment indoors or in enclosed spaces where ventilation is poor. Never use a gas-powered pressure washer inside a house, garage, shed, or any enclosure even if the doors and windows are open.
Before operating, put a fuel-powered pressure washer unit on a level surface outside in a well-ventilated area away from doors, windows, and vents.
Use a carbon monoxide detector in any occupied buildings that are near the running engine.
If you experience headache, nausea, dizziness, sleepiness, or weakness while the pressure washer is running, move to fresh air and seek medical attention immediately.
Refuel a gas-powered pressure washer outdoors, and only after it has cooled down.
Regularly check fuel lines and components for leaks.
Pressure washers may use chemicals to improve cleaning efforts. All cleaning chemicals can be hazardous if they are not handled properly. Carefully observe all chemical instructions and warnings before using. Never mix chemicals unless explicitly directed by the manufacturer. Avoid inhaling fumes and always ensure there is adequate ventilation in the work area.
Before operating a pressure washer, inspect the equipment and the work area. Check for any signs of wear or damage to hoses, nozzles, and other components.
Make sure all connections are secure before starting the machine. Do not use a machine with frayed or cracked hoses or other defects.
Remove all items from the work area if they should not be sprayed.
To minimize the amount of water getting into the pressure washer, place the unit away from the cleaning site during operation.
Pressure washing can dislodge weak or broken surfaces, turning it into trip hazards or projectiles.
When pressure washing in public areas or where other workers may be present, post signs or barriers to indicate individuals should stay clear of the area.
Do not aim the nozzle straight at a surface. Hold the wand at a 45-degree angle to the surface at a distance that cleans well without causing damage.
Certain pressure washing jobs (mold, asbestos, lead paint, confined spaces, etc.) require additional safety considerations. Do not perform hazardous pressure washing tasks without proper PPE and specialized training.
When the pressure washing job is finished completely empty the water from the high-pressure hose, pressure washer unit, nozzles, and spray wand.
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