Most of the replies are probabley correct. Its a city water facility. You get a continuos water supply without having to fill your tank with water and carry the weight around.
Problem is finding the ends to fit the various taps/outlets on the camp sites.
The other thing to remeber is that when you are using water from your fresh water tank for lets say a shower, the water goes in to your grey water tank.
Your Grey and Black water tanks are designed to hold the amount that you have in your fresh water.
The problem with city water supply is that without realsing you can overfill your Grey and Black water tanks because you have an unlimited supply of water.
It should only be used when you have a disposal point at hand. Just the way that they do in the usa.
Hope that makes sense, it sounds confusing to me and I wrote it.
Jim
