Use it for cleaning, water your plants with it but my understanding is that its not recommended for drinking as the silver colloid concentration is too high, and I think but dont quote me on this, that there are also bigger particles than colloids too if its been left for longer. Im sure a little wont hurt though if youve already drank some :-)
I dont know when it became safe to say that Argeria is only caused by CS thats had other things added to it.