I have never seen a camp ground that only had a hand pump. I know they exist, but I have never been to a campground that didnt have water. It is a good idea to carry enough water in your tanks for enroute stuff. Ill usually keep 7-10 gallons in there. We are very good at using our camper enroute for all of our needs. Toilet, food, drinks, brushing teeth, etc.
Worst case scenario... I have used fresh water sources at a lot of different truck stops and also been able to use the waste and water facilities at nearby state parks.
...she started talking about how I never listened to her or somethin, I donno, I wasn't really paying attention...