...strictly my opinion...I built/used the "redneck" water tanks, built from 4" PVC w/NSF potable water rating...no matter what I did or used, I could not get the "funk" taste to go away...I hear ABS pipe is a better choice...I now use the "blue" water jugs from most any sporting goods store...keeps the water fresher tasting, easier to clean and for me, they have actually proved more convenient since, I can take just as much water as I need/want...they are available in sizes from 2.5gal and up...I have 2 of the 2.5gal and a 5gal Gott water cooler..........
Propane...for years I used the little 1# throw aways...no more, except as back up...I hated paying way too much for propane, having to deal with partially used bottles and disposing of the used one, I considered 5/10# tanks but they are pricey compared to a std 20# "barbque" style tank(of which I had several), so that is what I now use, a 20# tank with a distribution tree, which allows me to mount a lantern on top and provides a couple of taps to run additional appliances...I have them refilled at a refill station and only pay for propane used and when the expiration date comes around, I trade them for an AmeriGas/BlueRhino or other prefilled tank(which are only partially filled) and go on about my business.........
Propane and Water Usage...my little propane stove runs near 4hrs on a 1# disposable and my large stove gets around 2.5hrs of cooking time on the same 1# bottle...YMMV...for water usage, if conservative, you can probably get by with less than a gal a day per person but, not by a whole lot...on a 3day trip w/2people and additional drinks available, I will bring water home with 5gal available...especially if I use paper and plastic for utensils and do minimal washups...once again, YMMV and only personal experience will give you definitive answers to your questions..........
madjack

...I have come to believe that, conflict resolution, through violence, is never acceptable.....................mj