An eye wash station is a piece of safety equipment designed to flush hazardous chemicals, dust, or debris from your eyes using a steady stream of clean water. These stations are required by OSHA in any workplace where employees could be exposed to corrosive or injurious materials, and they need to be positioned within 10 feet of the hazard for immediate access.
How an Eye Wash Station Works
The basic design is straightforward: two nozzles mounted at eye level deliver water to both eyes simultaneously. When activated, usually by pushing a lever or stepping on a foot pedal, the station produces a controlled, upward-flowing stream that rinses contaminants away from the eye’s surface. Most units are hands-free once activated, so you can use your fingers to hold your eyelids open during flushing.
The standard eyewash delivers water at a minimum of 0.4 gallons per minute at 30 pounds per square inch of pressure. That flow rate is calibrated to be strong enough to wash chemicals away without being forceful enough to damage delicate eye tissue. Eye/face wash stations, a slightly different category, double that flow to 3.0 gallons per minute and use a wider spray pattern that covers the entire face, not just the eyes.
Plumbed vs. Portable Stations
Plumbed eyewash stations connect directly to a building’s water supply. They deliver an unlimited, continuous flow of water, often with temperature controls built in. These are the standard choice for labs, chemical processing plants, manufacturing floors, and hospital sterilization units where hazardous exposure is routine and predictable.
Portable stations are self-contained units that store clean water or flushing solution in a reservoir. They come in two main styles: gravity-fed tanks that use an elevated reservoir to push water down to the nozzles, and pressurized systems that are more compact and easier to transport. Portable units shine in situations where plumbing isn’t available, like construction sites, agricultural operations, or temporary work areas. The tradeoff is limited water supply and the need to regularly refill and replace the stored solution.
How to Use One in an Emergency
Speed matters more than anything else. The moment a chemical contacts your eyes, get to the station and start flushing. Use your fingers to hold the affected eye open as wide as possible. The water will likely feel uncomfortably cold, but stopping early can allow the chemical to continue damaging tissue.
If you wear contact lenses, remove them as quickly as you can during flushing. Chemicals can get trapped behind the lens against the surface of the eye, making the irrigation far less effective. Roll your eyes in all directions while the water flows to help reach every part of the eye’s surface.
The minimum flushing time is 15 minutes of continuous irrigation. For stronger corrosives, rinsing may need to continue for up to 60 minutes. After flushing for the required time, seek medical attention. Do not stop flushing early to go find help.
Placement Requirements
OSHA requires eyewash stations to be located within 10 feet of unimpeded travel distance from any corrosive material hazard. “Unimpeded” is the key word: the path can’t pass through doors that could be locked, require navigating around obstacles, or involve going up or down stairs. A person with compromised vision and burning eyes needs to reach the station in seconds without thinking about the route.
Stations also need to be installed in well-lit areas with clear signage. The path to the station should remain unobstructed at all times, meaning no storage boxes, equipment, or carts blocking the way.
Water Temperature and Quality
The water must be tepid, generally between 60°F and 100°F. Water that’s too cold makes it nearly impossible for someone to keep their eyes under the stream for 15 full minutes. Water that’s too hot can increase chemical absorption into the eye tissue and cause additional thermal injury. Plumbed units often include mixing valves to keep the temperature within this range automatically. Portable units stored in extreme environments, whether a freezing warehouse or a sun-baked outdoor site, need monitoring to ensure the stored solution stays within safe temperatures.
Maintenance and Testing
Plumbed eyewash stations must be activated weekly. This isn’t just a formality. Stagnant water sitting in the supply lines between uses can develop bacterial buildup and sediment that would introduce new contaminants into an already injured eye. The weekly test should run long enough to verify proper flow rate, confirm the spray pattern hits both eyes evenly, and clear out any debris in the line. Each test should be documented on a log sheet kept near the station.
Beyond weekly activation, stations need periodic comprehensive inspections to check for corrosion, damaged nozzles, and proper water pressure. Portable units require their own maintenance cycle: checking fluid levels, replacing expired flushing solution, and inspecting seals and activation mechanisms. A station that doesn’t work the moment someone needs it is worse than no station at all, because it wastes the critical first seconds of response time.
Where Eye Wash Stations Are Required
Any workplace where eyes could contact corrosive or hazardous materials needs eyewash access. This includes the obvious settings like chemical plants and research laboratories, but it also covers workplaces people don’t always think of: auto body shops where solvents are used, janitorial closets stocked with industrial cleaners, battery charging areas where sulfuric acid is present, and agricultural facilities handling pesticides or fertilizers. The standard applies based on the actual chemicals present, not the industry. If a material’s safety data sheet indicates it can cause eye damage, an eyewash station needs to be nearby.