Burz, it takes about 12 minutes to fill the gallon jugs, but my case is, I am fairly sure, this is really unusual. My guess is that for 'normal' water systems, it's WAY faster. Here Vt , I have 2 gravity fed well houses up in the woods, and NO booster pump for the house, so, the water pressure is Soooo slight. I've been here in my house for 30 years, and am quite used to it, but others might not accept this situation. Anyway, with the booster pump, that most folks may not need, it's sooo much faster. Get this. Before I got the pump, it took 18 HOURS to make ONE gallon of water!! It literally dripped out of the tube, into the jug! Ray was really surprised, and of course, helped me out the choice of booster pump. He's been invaluable in my learning about all this. Don't know where I'd be without him