Testing Methodology
Every water filter featured in this guide carries the NSF certification, meaning it has been independently tested to verify it reduces the contaminants it claims to target. However, the reviewer did not independently measure contaminant reduction. Instead, the review focused on factors relevant to everyday use: ease of setup, overall design and functionality, filter type, maintenance requirements, and taste. Importantly, no filter can remove everything. As Rick Postmus, senior manager of water systems at NSF, explains, ‘Some products are designed mainly to improve taste and odor and may not address heavy metals or emerging contaminants at all. Consumers should be cautious of broad claims like “removes all contaminants”—confidence comes from clarity around what was actually tested, verified, and certified.’
Best Water Filter Pitcher: Brita 6-Cup Denali Water Pitcher
Price: $27 at time of publishing. Capacity: 6 cups. Outer dimensions: 10.04″L x 10.12″W x 4.82″H. Filter type: Brita Original Filter (activated carbon). Filter lifespan: 2 months. Certifications: NSF/ANSI 42 and 53. Special features: Change filter indicator (requires batteries).
Pros and Cons
- Pros: Affordable, convenient (available at most major retailers), NSF-certified, small-space friendly, filters trace contaminants and chlorine odor, great taste, automatic filter indicator.
- Cons: Does not filter PFAS, lead, calcium, bacteria, or viruses; small capacity requires frequent filling; shorter filter lifespan.
The reviewer found the Brita pitcher easy to use: flush the filter with cold water for 15 seconds, then fill and use after three cycles. Water tasted noticeably better with reduced chlorine odor. The automatic filter indicator simplifies maintenance. However, the filtration scope is limited; upgrading to the Brita Elite filter ($20) adds more contaminant reduction but costs more.
Best for Fridge Space: Waterdrop WFD-40L Water Filter Dispenser
Price: $33 at time of publishing. Capacity: 8.2 liters. Outer dimensions: 14.4″L x 5.5″W x 10.2″H. Filter type: Activated carbon. Filter lifespan: 3 months. Certifications: NSF/ANSI-42 and 372. Special features: None listed.
Pros and Cons
- Pros: Affordable, NSF-certified, fits neatly in refrigerators, convenient pour spout, filters trace contaminants, lead, and chlorine odor, great taste, longer filter lifespan.
- Cons: Not as widely available in stores as other brands; does not filter PFAS, calcium, bacteria, or viruses.
Setup: soak large flat filter in cold water for 10 minutes, then insert. The pour spout fits narrow bottle openings (e.g., Yeti) without unscrewing the top. A sliding window on the top lid allows refilling without removing the lid. Water tasted crisp and clean; certified to reduce lead. Filter lasts three months.
Best Countertop Water Filter: Rorra Countertop System
Price: ~$450 at time of publishing. Capacity: 2.8 gallons. Outer dimensions: 17″ x 11″. Filter type: Multi-stage (activated carbon, etc.). Filter lifespan: 90 days. Certifications: NSF/ANSI-42 and 372. Special features: Filter indicator light (requires batteries).
Pros and Cons
- Pros: Beautiful design, NSF-certified, filters PFAS, heavy metals, microplastics, chlorine, and more; extremely easy setup; large capacity; convenient pour spout; great taste; longer filter lifespan; automatic filter indicator.
- Cons: Expensive; only available through Rorra’s website; expensive replacement filters ($75); takes up significant counter space.
Setup: insert filter into stainless steel housing, activate battery tab, fill upper reservoir with cold water, and let it run through first cycle. Water tasted excellent and crisp. Filters PFAS, heavy metals, microplastics, chlorine. Replacement filters are $75 and only available from the brand.
Other Water Filter Systems We Tested and Liked
Larq PureVis 3-in-1 Water Pitcher ($168): Tech-heavy with UV purification and app connectivity. Sleek, lightweight, compact. Hands-free fill lid and full indicator. Water tastes excellent. Downside: expensive, requires app, proprietary filters lock user into ecosystem.
Lifestraw Home 7-Cup Water Pitcher: Minimalist design, elevated look. Convenient fill-through lid, silicone base prevents sliding. Broad contaminant filtration. Downsides: large and heavy footprint, occupies significant fridge space, requires more attention.
Culligan MaxClear Gravity Water Filter System: Affordable alternative to premium stainless steel systems. NSF-certified for PFAS, heavy metals, microplastics, chlorine. Compatible with other filter brands. Polished look. Downsides: filter prep requires several days of priming and cycling; slow initial flow; heavy when filled; no opening in top chamber.
Boroux Legacy Compact Water Filter System: Stainless steel gravity-fed system. Filters PFAS, heavy metals, microplastics, chlorine. Multiple color options. Filters last up to 12 months. Produces crisp, soft water. Downsides: complex setup with filter priming; heavy; no opening for easy refills; more commitment than Rorra.
Water Filter Systems We Don’t Recommend
Aarke Water Pitcher: Modern aesthetic with built-in filter calendar. Downsides: heavy when empty, cumbersome when full, internal cartridge reduces water capacity, small capacity, premium price. Not enough value compared to lighter, more affordable alternatives.
What to Consider When Shopping for a Water Filter
Third-Party Testing
Look for certifications like NSF/ANSI 42, 53, or 401. Verify products through NSF’s online database. Independent certification means ongoing oversight and periodic retesting.
Filter Lifespan
Filters have finite treatment capacity. Delayed replacement reduces effectiveness. Pitcher filters often need replacement every 2–3 months, countertop systems up to 6–12 months. Consider cost and availability of replacement filters.
Design and Capacity
Choose based on household water consumption and space. Pitchers suit renters and small households; countertop systems offer larger capacities. The best filter is the one you’ll actually use.
Filter Type
Activated carbon improves taste and odor. Ion exchange reduces lead. Mechanical filtration captures sediment and microplastics. Reverse osmosis removes broader contaminants. Check independent certifications for specific contaminants.
Frequently Asked Questions
How are water filters tested and certified?
Reputable filters are independently tested by organizations like NSF International or the Water Quality Association. Different certifications correspond to different standards. Certification labels are more meaningful than marketing claims.
What kind of water filter system do I need?
Simple pitcher filters are sufficient for better-tasting water. For contaminants like lead or PFAS, a countertop system may be better. Consider your water, space, and desired outcomes.
Are countertop water filters better than pitchers?
Countertop filters typically hold more water and offer more robust filtration. Pitchers are cheaper, easier to store, and require minimal setup. Best choice depends on usage and counter space.
What can filters remove from my water?
Different filters remove different things. Some target chlorine and odors; others reduce lead, pesticides, PFAS, and microplastics. No filter removes everything—check certifications.