The Univedis Portable Handwash Sink stands out because it features water pressure and an auto shut-off function.
It also stands out because it comes already assembled. You just plug it into your 110 volt outlet, fill the freshwater tank, and you’re good to go.
The tank accommodates six gallons of fresh water, so you can have many handwashing sessions before you need to refill it. (And it will let you know when the tank is empty, by shutting itself off.)
The gray water tank accommodates seven and a half gallons, so you know it will never overflow. This unit also has backflow protection.
If you want a portable handwashing station with the conveniences and assurances of modern indoor plumbing, this is your best bet. (Except it does NOT have hot water.) But it will definitely deliver more water pressure than other camping sinks included here.
Of course, unlike the camping sinks, you’ll need a power source. (And, while it’s still a portable handwashing station, it’s not quite as easy to transport as the camping sinks.)
One drawback: If you bump into this machine, you may jostle the tank.