A hand-wash station is a standalone sink, not a restroom, it dispenses water for washing only and pairs with a portable toilet or catering setup. Each 2-basin unit carries roughly 20-22 gallons of fresh water in a top…

A hand-wash station is a standalone sink, not a restroom, it dispenses water for washing only and pairs with a portable toilet or catering setup. Each 2-basin unit carries roughly 20-22 gallons of fresh water in a top tank that gravity-feeds foot-pump taps, drains into a separate gray-water tank, and needs no hookup, so it can sit on grass, gravel, or pavement anywhere a delivery truck can reach. A single 2-station unit covers about 100 users in a day; food-service and health-code situations generally call for one sink per food-prep area plus one near restrooms.
For most events, place a hand-wash station beside the portable toilet bank so guests wash immediately after use. A Loose Park 5K, a Crossroads Arts District block party, or a River Market food festival with catering usually pairs two to four sinks with the restroom count. For job sites, OSHA guidance (29 CFR 1926.51) requires washing facilities where employees handle materials that need cleanup; a framing crew in Northland or a remodel in Brookside typically keeps one station per restroom, refilled on the weekly service visit.
Decision fit comes down to crowd size and duration. If a Waldo backyard gathering runs a few hours for under 50 people, one 2-station unit is plenty and needs no mid-event refill. If a Westport festival draws steady all-day traffic, add a second unit rather than risk an empty tank by afternoon, the trade-off is a higher total versus a line at a dry sink. Food vendors at Country Club Plaza and Columbus Park events should count a dedicated sink per vendor row, since shared handwashing slows service. Sinks are gravity-fed only; they do not heat water, so cold-weather use in Hyde Park or Ruskin Heights winter jobs runs cold unless a heated unit is arranged in advance.
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