You can produce water fast enough to keep you going on large commercial we run 3 poles from one van regularly and we fill faster than we can use it that’s with a twin RO S and a booster pump it will produce 1000 ltr of pure in two hours no problem , we do work all over the country and run to the jobs with around 200 ltr in the tank when we get there plug into there hose and fill up whilst working .