My water tank has a 2" hose. Fills a bucket faster than a home tap.
To be able to spray I purchased a 12v pump. The standard kind that is used in all RV's and to spray chemicals from sprayers pulled by 4 wheelers. Mounted it on a piece of plywood, with adapaters to garden hose. Also adapters to the 2" hose. Made a power cord long enough to reach Cig. lighter in the truck. One Cig lighter power adapter (auto stores or Radio Shak) and I was good to go. The whole thing was sized to fit into a plastic storage box for easy storage and carrying.
It does a nice job of washing horses and filling the LQ tank from the tank in the truck bed.
Ed
Ed & Wendy Hauser 2994 Mittower Road Victor, MT 59875