I don't see the point in fighting water quality. A 100 gal/day RO system cost about $100, hook it to a float valve in a large plastic tote, and poof, you have a big tub of clean water and never have to worry about water quality again... just change the pre filters a couple times a year, and the membrane about every 2 years. fyi, I wouldn't bother with the 7 stage or 9 stage .. or what ever they are trying to sell. I have always used the 4 stage, three pre-filters to remove the junk and chlorine, then the membrane. Just one less thing to deal with, having good water!