What Is a Portable Sink Rental?
It's a standalone basin with a built-in fresh water tank feeding the faucet and a gray water tank catching the drain water underneath. No hose bib, no sewer line. You fill the fresh tank, crews wash up, and the gray tank holds the runoff until it's dumped. Some units run on a hand pump, others on a small 12 volt pump for steadier flow. Kent Porta Pros stocks both foot-pump and battery-powered models, and either pairs well with a handwashing station rental if you're covering a larger crew count.
For construction sites, this matters beyond convenience. OSHA 1926.51(a)(1) requires an adequate supply of potable water at all places of employment, and 29 CFR 1910.141(d)(2) requires that washing facilities include soap and towels or a hand-drying device, not just sanitizer. A portable sink with a stocked soap dispenser and paper towel holder satisfies both. If your crew works with paints, coatings, herbicides or insecticides, OSHA 1926.51(f)(1) specifically requires washing facilities for that exposure, and a sink station covers it directly. Pair it with a portable toilet rental or full construction site services package and you've got the sanitation basics covered without trenching a water line.
Can You Wash Your Hair in a Portable Sink?
Yes, and it's one of the more common requests we get for events and camps. A portable sink for hair washing works best with a deep basin and a hose sprayer attachment rather than a fixed faucet, since you need room to tip a head back. Film crews use this setup often, and it fits well with a film set restroom rental order where continuity and cleanup matter between takes.
For a portable sink to wash hair comfortably, hot water helps. A hot water portable sink runs a small onboard heater or a pre-filled warm tank, and we recommend it for cold-weather bookings or overnight camp setups. If you're renting for winter conditions in Kent, check our porta potty in winter page too, since freezing lines affect sinks the same way they affect toilets. Camping portable sink units tend to be smaller and lighter for towing, while event-grade portable sink stations are built wider for multiple users at once, with two or three basins across one trailer-mounted unit.
How Big Are Portable Sink Water Tanks?
Tank sizes vary by model, but the fresh and gray tanks work as a matched pair; whatever the fresh tank holds, the gray tank needs to hold at least as much, since every gallon used has to go somewhere. Larger portable sink water tanks mean fewer refill and pump-out trips, which matters most on multi-day events or remote sites where a water truck isn't running back and forth. Kent Porta Pros delivers with tanks pre-filled and can schedule a mid-rental top-off for longer bookings, similar to how we handle service intervals on standard porta potty rental units under ANSI/PSAI Z4.3, which sets a baseline of one service visit per week for up to 10 users over a 40 hour week.
If your event runs closer to Covington, 6.8 miles east of Kent, or out toward Des Moines, 7.2 miles west, we still schedule refills on the same route as your delivery, so tank size mostly affects how often we need to come back, not whether we can serve the location.
What Does a Portable Sink Rental Cost?
Pricing depends on unit type, duration and whether it's bundled with other equipment. A standard portable toilet rents by the day, week or month, and sink stations typically price close to that range when ordered together. Here's what a standalone standard unit runs, for comparison:
| Unit | Day | Week | Month |
|---|---|---|---|
| Standard toilet | $100 - $350 | $130 - $500 | $125 - $325 |
| ADA unit | $200 - $400 | -- | -- |
Portable sink stations are usually quoted individually since tank size and pump type vary, so ask for a specific number when you request a quote. Delivery fees apply separately and follow the same band as our other equipment, generally $100 to $500 for a one-time day fee depending on distance and access. If you're comparing costs across gear types, our porta potty rental cost and porta potty rental per day pages break down the full pricing picture, and monthly porta potty rental covers longer bookings.
For events needing full restroom coverage alongside handwashing, look at event restroom rental, wedding restroom rental or festival restroom rental. Job sites should check how many porta potties do i need, since OSHA 1926.51(c) sets the ratio at one toilet per 20 workers, and sink counts often follow the same headcount math.
Do I need a permit for a portable sink station?
Placement in a public right of way needs confirming with the City of Kent before delivery. We handle most placements on private property or job sites without issue, but if you're setting up near a sidewalk or street, ask us and we'll check before the delivery date. See porta potty permit requirements for more on how this works with other equipment.
How much water does a portable sink hold before refill?
It depends on the tank and how many people use it. A crew of 10 running a 40 hour week fits the ANSI/PSAI Z4.3 baseline service interval, so we typically schedule a refill at the same time we service nearby standard porta potty rental units.
Can I rent a portable sink for camping?
Yes. Camping portable sink units are compact and easy to tow or hand-carry, and they pair well with a camping porta potty for remote sites. We deliver these across Kent and out toward SeaTac, 9.3 miles northwest.
Does a portable sink need power?
Not always. Foot-pump models need no power at all, while battery-powered and hot water models need occasional charging. Neither requires a 200 amp service or hookup, so they work on sites without power access.
What is the difference between a portable sink and a handwashing station?
A portable sink usually means a single deep basin built for washing hands, dishes or hair, while a handwashing station rental often refers to a multi-user unit built for job site crews. Both use the same fresh and gray tank setup.
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