I am looking to add a potable water holding tank to my W900L. I drink reverse osmosis water which I produce at home, and it is getting really old filling up jugs for my trips. So I figured I would see if anyone has some ideas for adding a water storage tank to the truck. I would like to maybe put it under the bunk so it doesn't freeze in the winter, and plumb a small 12v pump system on it. Any ideas where I could find a hard tank (not a bladder) and the gear to do this? It'd be nice if the pump also works in reverse so I can fill the tank without trying to pour it in and spill it all over the bunk heater, etc.

40 gals. would be great. I drink about a gallon a day so that would be plenty for drinking and cooking while out for 3-4 weeks.

I wonder if an RV store could install one for me?

Thanks for any ideas.

Originally Posted by Hardlyevr

Volvo 780's have a sink option that comes with a tank with pump, and a different tank (smaller) to catch from the drain. You might be able to find one of these used. But with mine, they do freeze in extreme cold weather in the side box location, and I don't know if underbunk in a KW would be significantly bettter.

Hmmm interesting. I do have a webasto bunk heater under there that will keep the air circulating, and the hot end dumps out low at the base of the bunk into the sleeper which might help, too.

Oh Vito I was talking about the DC bus already under the bunk, not already on the tank.

STexan thanks for pointing out the odor issue. I usually transfer the water into milk jugs and haven't noticed a taste, but I wonder if the new plastic tank will be different. Maybe if I pre-treat the water with some baking soda to balance the PH, it might also help the odor?