Quick answer: SimPure sells the same RO science in three form factors, and the stage count is the least important number on the box. The Y7P-BW countertop ($269.99) is the
Quick answer: Waterdrop's lineup sorts by what's actually in your water — so test first. The G3P800 tankless RO ($849.00) is the quantified contaminant killer: Phoenix tap at 400–600 TDS