Yeah I use the storage tank, although it's only 1.33 gallon. I didn't need to pressurise my line (my water source was strong enough...40 lbs I think). I have the faucet set up on my sink which was a pain to install because my drill didn't have a guide. But I can open the faucet, and leave a 5 gallon jug under it throughout the night and it's usually full by morning.