Thank you very much to everyone who replied.

Smitty,
If I stored water, I will be very inclined to do as you did, "easier to dump it & refill". Wow, 2003 till now, your water is almost 4 years old. Thank you, for taking a swig. Wonder if boiling will get rid of the faint bleach smell and plastic taste.

kharrel,
Mixing air into water before passing though an activated carbon filter is a good idea. Wonder if using an aquarium filter to pump air into the water will be a good way to aerate the water.

After all our efforts & money spend to treat and stored water for the long term, we dump it down the drain, on the lawn & flush toilet. At best, managed only a swig, then I think something is seriously wrong.

If we won't drink it ourselves, how are we going to convince our family members to drink it. If you cannot get use to the bleach smell & plastic taste now, what make you think you will drink it during an emergency situation.

Hence, I am wondering how to make it more palatable. Wonder if the following procedures would be better.
a) filter the water to get rid of any floating particles
b) pass the filtered water though a UV exposure to kill germs
c) store the water in a suitable container
d) use an aquarium filter to pump air to aerate the water
e) pass the water though an activated carbon filter
f) boil the water before drinking.

Just my 2 cents. All feedback are welcome.