Ozark River Portable Sinks, Ozark River Portable Sinks® are a high quality, hot water, portable hand wash sink that the food and beverage, early child care and education as well as the health and beauty markets depend on for hand wash law compliance. With a .003% Warranty Replacement Rate and offering over 60 models Ozark River Portable Sinks® stands out from its competition as the most reliable and trusted value to its customers. Each Ozark River® portable hand sink is NSF Certified and is fast becoming the product of cho.