it is rated for 120g per day. but i'm getting about 60g in 24hrs.
Was it producing 120g per day when you originally bought it? If it has decreased that much, your filters and possibly your membrane could be getting clogged up. Mine took a dive not too long ago and would barely trickle out water. I changed all the filters and membrane and it works like a champ now I know with our 'superior water' down here, the membranes can clog up in no time.

Sure you can't have a water storage somewhere in the house/apt? It makes things so much easier when you do not have to wait to 'make' water. I have a Brute trash can I use for my top off and water storage.