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Water Filter Buying Guide

Find the perfect water filter for your needs. Compare NSF-certified filters by type, contaminant removal capability, and price point.

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How to Choose the Right Filter

1. Check Your Water Quality Report

Use our city search to find your local water quality report. Identify which contaminants are above health guidelines in your area.

2. Match Filter to Contaminants

Look for NSF certifications that match your needs. NSF-53 removes lead and cysts, NSF-58 for reverse osmosis, NSF-401 for emerging contaminants like PFAS.

3. Consider Your Budget & Usage

Pitcher filters are affordable but need frequent replacement. Under-sink and RO systems cost more upfront but have lower long-term costs per gallon.

4. Verify NSF Certification

Always verify NSF certification claims. Look for the NSF mark on packaging and check the NSF database to confirm the specific contaminants removed.