Many gas stations have hose spigots on the outside of their buildings. Then there are always parks, churches, fast food restaurants, etc. Other than gas stations, I always ask if filling up at a private business or church.
Also, it's as easy as knocking on a door or two. Many people would be more than willing to spare a few gallons of water. If you can handle the occasional "Get off my property" grump, then door knocking is a breeze.
Do you drink this water? I always carry a jug of bottled water for drinking, coffee etc. The hoses you use may not be potable water approved as some are rubber or other material that can leach into the water. Suggest that you carry your own clean hose made for potable water.
Re post 4:
In the past I would drink the water from my plastic tank but no longer do so. Last summer I left the camper van unused for awhile and the water turned bad and I had to give it a good dose of bleach. I have now permanently switched to bottled water for drinking and cooking as I now give the tank a tiny shot of bleach when I fill it. Also I decided that I did not like the taste of plastic in the tank water.
I do carry my own hose but since I no longer drink the tank water I often use any hose that might already be connected to my discovered water source. I do let it first run on the ground enough time to to not let standing water in the hose get into my tank. More and more I see that outside faucets need a square ended hollow key to be turned on. I will try to purchase such a key.
If I had a fortune of money I would have a stainless steel tank made to fit my space. Aluminum tanks are less costly but they are not good for water in the long haul.
Its not fair! The moderators get to use salacious comments and words and we cant say silpecker? Fooled you on that one KOV!
BTW we also get gallons of water at WallyWorld and reuse the jugs as appropriate. I am not drinking the water from my old plastic gas jug even though it never had gas in it.
Today I purchased a 4-way sillcock key at Home Depot for less than 10 dollars. It is cross shaped about 3 inches across and looks like a miniature lug wrench for changing wheels. It fits 4 different size sillcocks.
We've had one of these fabulous water filters on our kitchen sink at home for ~20yrs, and we're going to install one in our PM. It taps into standard pressurized plumbing pipes and gives you clean drinking water (no plastic bottles to buy/recycle). The ceramic filter is way better than paper or carbon filters. Filter cartridges last about 6 months here at home. Rainfresh is a Canadian company and these units are available at most Canadian Tire stores. Unfortunately, they don't appear on Amazon.com/ca. You'll just have to come up here to get one