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I vacillate between trusting my well and trusting my RO (10,5,1 micron filters, plus the membrane). But it isn't healthy to drink RO all the time and I don't wanna mess with remineralization.

My well is 100' and 13 years old.

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For me I'd do a sediment filter and a charcoal filter and call it good. Send a sample out for analysis a few times a year.
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