Best picks
Each page names the systems we would buy for one job, and says exactly why: which independent certifications they hold, how much flow you keep, and what they cost over ten years.
Every pick links to a full data sheet in the system finder, graded on the same published rules as the other systems in our database.
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The best whole house water filters
Whole house water filter picks for city water, wells and PFAS, judged on certification listings, flow and 10-year cost. Prices checked September 2026.
Updated September 27, 2026
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The best whole house water filters for well water
Well water systems sorted by problem: iron, manganese and sulfur, bacteria, hardness and sediment. Test first, then match the system. Prices checked September 2026.
Updated September 27, 2026
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The best whole house water filters for PFAS
Which whole house PFAS filters are actually certified, for which compounds and at what flow, and why a certified RO is often the smarter buy. Checked September 2026.
Updated September 27, 2026
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The best whole house water filters for city water
Whole house filters for chlorine and chloramine city water, judged on media, flow, certification and 10-year cost, with chloramine explained. Checked Sept 2026.
Updated September 27, 2026
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The best salt free water softeners
Salt-free conditioners reduce scale but leave hardness in your water. Our picks, their inlet limits and 10-year costs, and when a salt softener is the better answer.
Updated September 27, 2026