The warm water, self-contained design provides the ultimate remote hand washing experience in the absence of plumbed water and waste by using an available electrical supply. The built-in electric water heater offers users the most effective hand wash by providing a tempered water supply from the self-contained water source. Both the water supply and waste-water are self-contained using storage tanks concealed within the cabinet.Self-contained model ps1230-f31 provides a pressurized water flow from the 5-gallon fresh water storage tank to the faucet using a 110vac plug-in, on-demand pump. The gooseneck faucet is a battery-operated hands-free sensor faucet that meets nsf and lead-free standards.