Best Water Filter 2026: RO vs Ion Exchange vs Carbon Filter Comparison

Water Filter Comparison Tool

RO vs Ion Exchange vs Activated Carbon — Find your best match

๐Ÿ‘‹ Select your main water concern below
Technology Best For Effectiveness Affordability Maintenance
Ion Exchange Hardness, Scale, Metals โ˜…โ˜…โ˜…โ˜…โ˜† โ˜…โ˜…โ˜…โ˜…โ˜† Salt refills
Reverse Osmosis (RO) PFAS, Metals, TDS, Bacteria โ˜…โ˜…โ˜…โ˜…โ˜… โ˜…โ˜…โ˜…โ˜†โ˜† Filters every 6-24 mo
Activated Carbon Chlorine, Taste, VOCs โ˜…โ˜…โ˜…โ˜†โ˜† โ˜…โ˜…โ˜…โ˜…โ˜… Cartridge changes

Frequently Asked Questions

**Summary:** Does Reverse Osmosis remove PFAS?
Yes — RO systems typically remove 90-99% of PFAS.
**Summary:** Which is best for hard water?
Ion Exchange (water softener) is the most effective.

Water Purification Comparison Tool • Updated May 2026