I just got back from a week of camping at a state park where I only had an electric hookup. I found this marvel at Walmart and I thought I would share since it worked so well. The spout that it comes with fits perfectly into the water access port to fill your fresh water tank. I bought two so it could fill faster but it was just an amazing find at walmart. Perfect for camping where you don't have a water hook up.
That's the exact same one we have, been using it since 2008. It has held up well. The only issue I had was when I got lazy while filling once and let the spout support the jug while pouring in water. I had it by the little handle on the bottom and that's it. Needless to say, it won't hold the weight. I am contemplating getting a 30-40 gallon potable water tank that I can sit in the back of the truck to haul water. There are a few places we go that require a bit of a hike to carry that jug while refilling tanks. Even if I just used the tank to fill the jug, it wouldn't require walking so far.