The Dark Side of RO water...

[kavanaru]

just kidding a bit with title but for sure got your attention...

My question is more related to the amount of water wasted during the purification process... One of the negative points for RO systems is reported as the huge amount of water wasted... however, it is almost impossible to find data on how much water is "a huge amount" in this case...

so, my question to all of you using RO systems: How much water do you really need in order to produce... let's say 100L RO water? just an estimate is fine

I am planning to buy a smal one (à la PuroSmart), however, I enter in conflicts with myself when thinking I am going to waste too much water...