Many, if not all RVers, use at least a sediment filter on their incoming water line. Some prop it in a bucket so it does not fall over, one ingenious RVer used a PVC pipe cap attached to his bumper to set the filter in. Leon did not want to mess with Panoply’s bumper. Instead, he used a bungee hooked to the window frame to hold the sediment filter off the ground. It worked fine. However, he added a carbon filter, as well, so lately he has just been using a bungie to hold both of them to the post that the water is connected to. Keeps them off the ground – and away from the RV.
We also have a good filter beneath our kitchen sink – and use a Brita for cooking and drinking. Overkill? Perhaps, but it makes us happy.