Did some Google-fu and found out that my Berkey filter will filter out VOCs including fuel, but didn't specify what type of fuel. May want to contact them to verify.
I have a Big Berkey and it works great with two filter elements although you can have four. I also have a Katadyn mini for on the go or bug out, a Steripen, Berkey water filter sports bottle (for on the go & my GHB), and a few Nalgene water bottles. You can never have too much drinking/potable water as it is the most essential for survival, aside from lead that is . . .
I have a Big Berkey bought around Y2K time but ashamed to say I've never tested it out with water. I also have a Sawyer SP181 filter system using a modified 5 gal. bucket but this is mostly for microbial stuff (although I put it toghether, also never tested with water).
Right now for drinking water I use that Brita pitcher.
Wire and Kia: Approximately how much water is used to produce 1 gal. of treated water? If your systems have plastic tubing how are they holding up as far as durability. .
I'll check more into RO. What brands do you recommend?
Q: By remineralize, do you mean to shake it up or add a ionizer?
BTW, BWS has community section on their site that links to the Red Hill issue. Worse case scenario is not good for Oahu. They are saying that contaminants include lead, toluene and naptha. I don't remember BWS getting that worked up about a issue other than chemicals from sugar fields affecting water in central Oahu back in the 80's. I e-mailed them today to ask if they can recommend a water filter system for fuel contamination. Will let everyone know what they say.
Thanks for the discussion.