I have no technical expertise here, but following on John's RO post--we have a Kinetico system from Second Wind Water (actually, we've had several Kineticos at different houses over the past 30 years or so). Both the system and the service are excellent. The Second Wind guys have great expertise and passion. Kinetico looks expensive on paper, but it is a fraction of the cost of Poland Spring on a per gallon basis, and there's no lugging
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