Jug and additional filters purchased 16th September 2016. The original filter lasted 3 months and after 3 months was still tested at 7.5-8.0 PH using a liquid PH tester tested. I installed a replacement filter last week and it works great, just as good as the original filter. pH tested from 9.5 to 10.0. The taste is excellent, the water is clear. Great product and service! R.J
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