check Murray Mcmurray catalog, they have a chicken water trough set up to be hooked to the end of garden hose.
Also with such few chickens there is a set up that uses a 5 gallon bucket that feeds down to a pan.
We use a series of 7 gallon water founts. 6 chickens are not going to drink more than a gallon or 2 even in the heat of summer, and you arre going to need to check for eggs every day. I dont see were carrying a half full 5 gallon bucket up or down a mountain every day is going to kill no one, Im 34 and my 65 year old neighbor gives me a run for my money when it comes to farm work.
josh
josh

I think this make better drinker single one you need adapter and soon small line 4g29 pressure reducing valve

Here is a link that might be useful: 9 inch drinker on this web site

We bought a large dog waterer. It has a 3 gallon container on top which feeds into a watering pan. I fill it twice a week for our six hens, and that is more often than is needed (I'm spoiling our girls). I take a 2-gallon watering can to the coop with me, remove the big bottle containing the water, refill it, clean out the pan, and replace the bottle. It's a little heavy to lift and place, but not terribly so.
In spite of your posting name, have you thought of relocating the coop closer to the house?