What they all said x 1,000,000,000!!
I can't stress enough how important our gravity feed outside the camper tap is. We use it every single trip without fail. It's great to leave on to fill a bucket, the dogs water bowl, washing the hands, getting crap off your feet, the list where water is useful outside a dirty filty camper trailer is endless. Ours has an ant cap on it ... I call it that as there is an ant on the cap ... all the lines going to it are food quality and I wouldn't hesitate to fill my water bottle from it on a trip. Much easier to turn a tap, remove a cap than to unlock the kitchen, pull the kitchen out, turn on the electrics for the water pump behind yet another locked door and then lock all these things back up again ... just to wash your hands or have a quick drink.
Very Important Point ---> Whilst in camp, it saves waking up a sleeping partner and/or whole family and/or your neighbours by turning on a very noisy water pump to fill the kettle for a cuppa at sparrow fart when you really just want a cuppa and some alone time.
Kit_e