by robertey » Mon Jul 22, 2013 11:05 am
Depends on what your tank is made of I suppose, and how long it has been stored. Some plastics are better suited to storage of drinking water. You may consider swapping it out for another type.
Generally the longer water has been stored the funkier it tastes. Anything more than 4-5 weeks days is going to leave your water tasting kind of flat. For long term storage of water, sanitization is required. The faint chlorine taste this imparts is better than the funky taste of stale water, or (in extreme cases) unsafe stored water.
I washed my tank when I got it with a water hose, plenty of dawn dish soap, and a soaking in a modest amount of bleach. I did this before mounting it and it made it a lot easier. I also cleaned all the tubing/fill line that transports the water. After thoroughly cleaning and rinsing, taste was OK, but not great. Roughly the quality of tap water in my area.
I am currently using my under-tear water tanks for nonpotable water for showers, washing equipment, and washing cookware. I use an insulated 1 gallon jug for drinking and cooking water. This is nice because I can pack it with ice and cold filtered water and keep it on the front seat for the ride. A 1 gallon jug frozen solid in the cooler can be used to replenish this as needed.