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In an unusual turn for Wirecutter, we tested only one other model for this guide, the Brita Complete Faucet Filtration System. That’s because Pur and Brita offer the only faucet-mounted filters we’ve found that are certified by the American National Standards Institute and NSF International and are widely available in North America.
Pur Advanced Faucet Filtration System
The best certifications, including for lead
With 71 ANSI/NSF certifications, the Pur Advanced system is the top-performing faucet-mounted filter available.
Pur Basic Faucet Replacement Filter
Standard Pur replacements
The Pur Basic filter is certified for 71 contaminants, including lead. A two-pack is enough for 200 gallons, or about six months.
(pack of two)
Pur MineralClear Faucet Replacement Filter
Pur replacements for enhanced flavor
The MineralClear filters have the same 71 certifications and add a (supposed) flavor-improving element. A four-pack is good for 400 gallons, or about a year.
(pack of four)
The Pur Advanced faucet-mounted filter is ANSI/NSF certified for 71 contaminants, including lead, mercury, many pesticides and industrial chemicals, and 12 “emerging compounds” (PDF) that are increasingly found in US drinking-water supplies. That puts it well ahead of Brita’s faucet filters, which are certified for 56 contaminants. The Pur filter is easy to install on a standard faucet (but be aware that no faucet-mounted filters will work on those with integrated pull-out sprayers). Over months of heavy testing, the Pur Advanced proved durable, never developing leaks or other hardware problems, and its built-in flow meter and indicator light automatically signal when it’s time to replace the filter cartridge. Finally, since the Pur Advanced system is available in multiple finishes, you have a better chance of matching it with your kitchen’s hardware than you do the Brita.
Source: The NY Times
Keyword: The Best Faucet-Mounted Water Filter