12V Water pump project

[Cruiser 105Tvan]

Just in the last couple of days I have been getting stuck into a small project.
How to get water from a Creek/River/Dam, to use for washing etc.
I started by consulting with Baron about his effort.
I purchased a pressure switched pump from a Caravan accessories outlet.
A Shurflo pump 12V 5.5Amp. with a lift capability of 1.5 to 2.0M and a head height of at least 6M., flow rate of 11.3Lpm.
A nylon/teflon cutting board 300Wx400Lx10mm.
Various hose fittings, an air release valve, an in-line irrigation filter (similar to the ones on the Tvan, only bigger) and a roll of 6mm wire (pair in a sheath).
4 door stoppers (for the feet), packet of small diam. bolts w/nuts, and a couple of the spring steel tool holder clips you screw down (to hold the filter).

Question: How much hose length would be needed/good to have, for the run from the pump to the trailer?
The answer 'However far you are from the water', is unacceptable.

A picture in the Gallery:  http://www.tracktrailerforums.com/index.php?action=gallery;sa=view;pic=326

Just have to get a box to keep it in now.

[Eelezy]

Robert, your setup is similar to the glind shower we had under our cruiser bonnet a while back. We had no worries pumping 10 metres from creeks. One thing to help is to ensure you have a foot valve at the end of your hose so that the water can't drain back into the creek. You probably already know this  anyway. 
We should have kept the Glind unit for the same purpose!
Chris

[Cruiser 105Tvan]

Thanks Chris,
Any help is gratefully accepted.
We still haven't had a coffee down the street yet.