A big problem with your plan... the RO filters membranes are generally destroyed by any exposure to chlorine bleach—so unless the RO system is isolated from the shock treated water supply, it will be a huge problem. I also doubt that the RO system sold at costco is designed for use on what is basically untreated water. Most RO water makers and filtration systems don't like to be used in bacterially contaminated waters. IMHO, to sterilize the water of cysts and such, you'd be much better off using a UV light treatment system—not an RO filter.
I've been to both Mexico and India many times. They are very similar in terms of their water sanitation (basically is none). I wouldn't drink the water if I was in the desert. Like all humans, their systems just adapt.
To give you an example, while vacationing in Cabo, I ate some of their fantastic authentic mexican food in a small town restaurant. They put a lime on my Corona that had been washed with tap water. They call it Montezuma's Revenge, and it just wreaks havoc on your digestive system.
In any case, Costco is selling an undersink RO system, so I guess I'll just use my dockside filter, and then RO the galley water, wilst also shocking the tanks with bleach.
Any other thoughts?
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You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.
—Cpt. Mal Reynolds, Serenity (edited)
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