What Is a Portable Sink Station?
A portable sink station is a self-contained unit with its own fresh water supply, a basin, a foot pump or hand pump, and a wastewater tank underneath. No hookup to city water or sewer is needed. That is the whole point. You place it, fill the tank, and it works for days before it needs a refill or a pump-out.
Most units on job sites in San Marcos pair with a portable toilet rental setup, since OSHA 1926.51(c) sets toilet counts by crew size and general sanitation rules push contractors toward handwashing access near those units. If your crew is applying paints, coatings, herbicides or insecticides, OSHA 1926.51(f)(1) specifically requires washing facilities for that contaminant exposure, not just a general sink nearby. Under 29 CFR 1910.141(d)(2), washing facilities need actual soap and towels or a hand-drying device. Hand sanitizer alone does not satisfy that. If you are unsure how many stations your crew needs, the how many porta potties do I need guide walks through headcount math, and the OSHA portable toilet requirements page covers the ratio rules in more detail.
Can a Portable Sink Be Used to Wash Hair?
Yes. Portable sinks with a deeper basin and a hand or foot pump work fine for washing hair, and campers, film crews and disaster relief teams use them that way often. A portable sink to wash hair needs decent water pressure and a basin big enough to lean into, which is why we recommend the larger tank option over a compact hand-wash unit for that use.
Camping portable sink setups see this most. Families heading out near Redwood, 6.2 miles south of San Marcos, or groups camping closer to town, often rent a sink station alongside a porta john rental for a weekend trip. For film production, a portable sink for hair and makeup touch-ups between takes is standard gear, and it pairs well with our film set restroom rental packages. Hot water portable sink units are available too, and those get requested most for cold-weather jobs or extended film shoots where crew comfort matters. Ask about hot water when you request a quote, since not every rental includes a heating element by default.
How Big Is the Water Tank on a Portable Sink?
Tank size varies by model, but portable sink water tanks generally hold enough for a full day of moderate use before needing a refill, and our delivery crew tops off tanks on service visits when a sink is rented alongside other units. A standard portable toilet on the same order carries a 60 to 70 gallon holding tank for comparison, though the sink's fresh and grey water tanks are separate systems entirely.
For events, ANSI/PSAI Z4.3 sets a baseline service interval of once per week for up to 10 users over a 40 hour week, and we service portable sinks on the same rotation as any paired standard porta potty rental units at your site. Larger events near San Marcos, like weddings or festivals, usually need more frequent top-offs, and our wedding restroom rental and festival restroom rental pages both cover typical service schedules for high-traffic days. If your job site also needs power for lighting or pumps, a temporary power pole can run alongside your sink station setup.
What Does a Portable Sink Rental Cost?
Pricing depends on the unit type, how long you need it and whether it ships with a paired toilet or trailer. Below is a comparison using our measured rental bands for related standard units, since sink stations are usually quoted as an add-on to a toilet or trailer order rather than sold alone.
| Duration | Standard Unit Low | Standard Unit Typical | Standard Unit High |
|---|---|---|---|
| Day | $100 | $150 | $350 |
| Week | $130 | $200 | $500 |
| Month | $125 | $200 | $325 |
Delivery fees run $50 to $150 for a weekly order and $100 to $500 for a single day drop-off, depending on distance and site access. If you are ordering for a job near Martindale, 7.4 miles east, or further out toward Lockhart at 17.8 miles, mention that when you call so we can quote delivery accurately. For a full cost breakdown on toilets ordered alongside a sink station, see porta potty rental cost or porta potty rental per day for short jobs. Longer projects usually do better with the monthly porta potty rental option.
How far in advance should I book a portable sink?
Book at least a few days out for standard delivery, longer during peak event season in spring and fall. Job sites running construction site services in San Marcos often add sinks to a standing toilet order, which speeds up scheduling since the truck is already coming.
Do portable sinks need electricity?
No, standard units run on a hand or foot pump with no power hookup required. Hot water portable sink models may include a small heating element, which we can explain when you place your order through request a quote.
Can I rent just a sink without a toilet?
Yes, standalone sink rentals are available for film sets, small events or camping trips. Most job site customers pair one with a portable restroom rental instead, since OSHA sanitation rules tie the two together for crews.
How often does the sink need servicing?
Service follows the same interval as your paired toilet units, typically weekly per ANSI/PSAI Z4.3 for moderate use. Higher-traffic events need more frequent visits, which our crew schedules when we deliver.
Are portable sinks ADA accessible?
Some models meet ADA reach and clearance guidelines, including the 48 inch maximum reach height under ADA Standards 308.2.1. Ask about accessible units when ordering, and see our ADA accessible porta potty page for related unit specs.
Next step
Get a delivery date
Tell us the address, the dates and the headcount. We size the order and confirm the route.