[MickeyC]

Well, the only machine at our store is labeled for drinking water but I imagine it can be used for anything. The Pur water faucet I use filters 100 gallons or more each and costs about 12 bucks for each cartridge. Like I said though...no reverse osmosis, but about as pure as you can get when it comes to tap water. Takes EVERYTHING out. Even the minerals that are good for you if you buy the right one. I am willing to bet that it would work just as well. Of course this is just my opinion. If somebody on here with more experience tells you otherwise than by all means go with what they say

P.S.-I have not tested the PUR water facucet for PH levels if thats what you are specifically looking for...so a bottle of PH Up and PH Down will fix it if needed. Try a fish store if you don't wanna order it.