Eyewash Station

An eyewash station is emergency safety equipment that delivers a controlled, hands-free stream of flushing fluid to a person’s eyes (or eyes and face) to remove a hazardous substance following an accidental exposure. In U.S. laboratory and facility procurement, “eyewash station” means specifically equipment designed and installed to meet ANSI/ISEA Z358.1, the voluntary consensus standard OSHA cites as the benchmark for the general duty created by 29 CFR 1910.151(c) to provide “suitable facilities for quick drenching or flushing of the eyes and body.” A device only counts as an eyewash station in this operational sense if it can deliver flushing fluid to both eyes simultaneously, hands-free, for a continuous 15-minute minimum, at a minimum flow rate of 0.4 gallons per minute (eyewash-only) or 3.0 gpm (eye/face wash) in the tepid 60-100°F (16-38°C) range Z358.1 specifies — a first-aid-kit eye-flush bottle or a sink does not meet this definition even though it can rinse an eye.

Types of eyewash stations, and what drives the procurement decision

Z358.1 recognizes several equipment categories, and the right one for a given space depends mainly on whether a permanent water supply is available and how far the equipment sits from the hazard it protects:

• Plumbed units — permanently connected to a water supply, providing effectively unlimited flush duration once activated. This is the default choice anywhere a lab already has bench or wall plumbing, but it requires a dedicated tepid-water source (commonly a tempering/mixing valve on the emergency line, not the building’s general hot water system) and a stay-open, hands-free valve.
• Self-contained (gravity-fed or pressurized) units — a tank of flushing fluid that does not depend on building plumbing, used in field locations, mobile units, or areas without a nearby water line. The tradeoff is a finite fluid supply and a manufacturer-set fluid-replacement schedule (commonly monthly, sometimes longer for factory-sealed cartridges) that becomes a standing maintenance line item.
• Personal/portable eyewash bottles — small, individually carried or bench-mounted units marketed for immediate first response. These supplement, but do not replace, a Z358.1-compliant primary station — see the counter-example below.
• Combination units — an eyewash or eye/face wash paired with a drench shower on one plumbing run. Z358.1 requires each component to independently meet its own flow-rate minimum; the shower’s flow cannot substitute for the eyewash requirement or vice versa.

For the full siting, flush-duration, temperature, flow-rate, and testing figures behind these categories, see CASRAI’s eyewash station and safety shower requirements guide — this page focuses on selecting and specifying equipment rather than repeating that compliance detail.

What to evaluate before purchasing

A procurement officer, lab manager, or EHS reviewer comparing eyewash station models or vendors should check the following, in roughly this order:

• Written Z358.1 conformance. The standard does not require independent third-party certification of every unit, and there is no single certifying body analogous to UL for this equipment category — manufacturers self-declare conformance. Request the manufacturer’s written declaration of compliance with the current edition (Z358.1-2014, with a newer 2024 edition also in circulation) and, where available, the underlying flow-rate and spray-pattern test data for the specific model, not just a general compliance claim on the catalog page.
• Flow rate and spray pattern matched to the fixture type. Confirm the published numbers meet or exceed 0.4 gpm (eyewash), 3.0 gpm (eye/face wash), or 20 gpm (drench shower) at the pressure your site’s water supply actually delivers — a unit rated to spec at an assumed test pressure may underperform on a real, lower-pressure line.
• Water delivery method. For plumbed units, confirm a tempering valve is included or specified separately to guarantee the 60-100°F tepid range year-round, including in unheated or high-ambient-temperature spaces. For self-contained units, compare fluid capacity against the 15-minute minimum flush duration and factor in the fluid-replacement interval as a recurring cost, not a one-time purchase.
• Placement fit. Coordinate the order with the room’s hazard assessment before buying — the unit has to land within Z358.1’s 10-second/unobstructed-path rule for the specific bench or process it protects, on the same level and, for strong acids/caustics, in the same room as the hazard. Buying a unit before confirming it can be sited correctly is a common, avoidable rework cost.
• Maintenance burden. Weekly activation testing is required regardless of type; factor in accessibility for that test, freeze protection for any unheated or outdoor location, and — for portable/self-contained units — the ongoing cost and administrative tracking of scheduled fluid replacement.
• Vendor and distribution channel. Both general industrial-safety suppliers and lab/medical-specific distributors (for example LAC Health, among others) carry Z358.1-labeled plumbed and portable units. Whichever channel is used, the purchasing decision should rest on the model’s documented compliance data and fit to the specific installation, not on the distributor relationship alone.

Eyewash station signage and the emergency-eyewash symbol

Z358.1 requires that every eyewash station be identified with a highly visible sign in a well-lit location, but the standard itself does not mandate one specific pictogram design — it specifies that the equipment must be found without hesitation, not the exact graphic. In practice, most U.S. facilities meet this using signage built on the ANSI Z535 family of standards, which governs safety-sign format and color coding generally (safety green is the conventional color for safety-equipment-location signage), often combined with the internationally registered ISO 7010 emergency-eyewash-station symbol (catalogued as E011) — a pictogram showing a stream of water directed at an eye, on a green background — which is widely recognized across countries and industries and is a reasonable default choice for facilities that also operate internationally or want a symbol-first sign that doesn’t depend on text literacy. When specifying signage as part of an eyewash station purchase, confirm the sign is durable for the installation environment (corrosion- and chemical-resistant where sited near the hazard it protects) and mounted so it stays visible from the approach path, not just from directly in front of the unit.

“Emergency eyewash station” vs. a personal eyewash bottle

“Emergency eyewash station” and “eyewash station” describe the same category of equipment — the word “emergency” in search and procurement usage is emphasis, not a distinct product class, and both terms point to Z358.1-compliant plumbed, self-contained, or combination equipment. The real distinction buyers need to make is between that equipment and small personal eyewash bottles or first-aid-kit eye-flush products, which are a different, supplemental product category — see the counter-example below.

Worked examples

A teaching wet-chemistry lab handling dilute acids and bases for undergraduate coursework installs a plumbed combination eyewash/drench-shower unit at each bench island, sized to the room’s Z358.1 travel-distance and flow-rate requirements, with a dedicated tempering valve on the emergency line to guarantee tepid water year-round regardless of the building’s domestic hot water status.

A mobile environmental-sampling team that handles corrosive preservative reagents away from plumbed water sources equips its field vehicle with an ANSI/ISEA Z358.1-2014-compliant self-contained (gravity-fed) eyewash unit, and tracks the manufacturer’s fluid-replacement interval as a standing calendar task, since a non-plumbed unit has no weekly flush-activation option to rely on for freshness assurance.

Counter-example

A wall-mounted eye-flush bottle or squeeze bottle sold as part of a general first-aid kit is not an eyewash station in the ANSI/ISEA Z358.1 sense, even though it is sometimes marketed using the word “eyewash.” It cannot deliver the standard’s required 15-minute continuous, hands-free flush at the specified flow rate, and Z358.1-based compliance programs treat it only as a supplemental measure to use while an injured person moves toward a certified station — never as a substitute for one.

Frequently asked questions

Does an eyewash station need to be plumbed to be Z358.1-compliant?

No. Both plumbed and self-contained (non-plumbed) units can meet ANSI/ISEA Z358.1, provided the self-contained unit delivers the required flow rate and a full 15-minute continuous flush from its fluid supply, and its fluid is replaced on the manufacturer’s schedule.

Is an “emergency eyewash station” different from a regular eyewash station?

No — they refer to the same equipment category. “Emergency” describes the equipment’s purpose, not a separate product type or standard.

What symbol is used for eyewash station signage?

There is no single mandatory pictogram under Z358.1 itself, but the internationally registered ISO 7010 symbol E011 (a water stream directed at an eye, on a green background) is the widely recognized standard graphic, typically paired with ANSI Z535-format signage in U.S. facilities.

Who certifies that a purchased eyewash station meets ANSI/ISEA Z358.1?

There is no single third-party certifying body for this equipment category; manufacturers self-declare conformance. Buyers should request the manufacturer’s written compliance declaration and, where available, the model’s flow-rate and spray-pattern test data before purchase.

This page covers what to consider when selecting and procuring eyewash station equipment. For the full siting, flush-duration, water-temperature, flow-rate, and testing-schedule requirements, see CASRAI’s eyewash station and safety shower requirements guide.