We completed a cross country trip in May 6,596 miles. One of the issues was finding a source for potable water. We only dry camped for about 2 days at a time and were in a campground, so we were able to dump/flush and refill the fresh water tank then, but while driving I found that most of the big Pilots or truck centers with RV lanes and dump stations didn't have potable water available. I asked a manager how do other RVers get fresh water, he pointed to a sink near the food area and said you are free to fill up some jugs there. I have an 80 gal fresh water tank and didn't want to spend the day there and recruit a water brigade. I highly suggest buying some of the collapsible 5 gal jugs in the camping area of Walmart and bringing extra, that way you can always make a run for water somewhere if you needed to or there was something available at your venue. I've seen some nice 7 gal hard jugs for fresh water, so depends on your available storage space. Also the issue is how to get it in the fresh water tank. One camper on this forum posted about having an old water pump and putting on like 30' power leads to clip on the battery and having a 30' foot hose so he can keep his jugs on his utility trailer or back of his truck and just pump the water over to the camper tank when needed. So depends on how elaborate you water to get. But practice and try it out in your driveway before you go, don't assume your intended method will work without testing before needed.
2015 Georgetown 364TS, '14 Fiesta 5 spd w/Tandem Tow Dolly HDXL 8x10, & EZGO Customized Cart
'16 - 59 days; '15 - 56 days
2011 Flagstaff V-Lite 30WFKS '14 - 24, '13 - 33, '12 - 36, '11 - 29, '10 - 23