Pitcher filters are the most popular entry point into home water filtration — low cost, zero installation, and a meaningful improvement over unfiltered tap water. Brita, PUR, and ZeroWater dominate this category. Each takes a different approach to filtration, and the differences matter depending on what you want to remove from your water.
Quick Summary
- Brita: Best for everyday chlorine and taste improvement. Longest filter life. Most affordable per gallon.
- PUR: Best for lead reduction among standard pitcher filters. Broader contaminant coverage with NSF 53 certification.
- ZeroWater: Best for total dissolved solid (TDS) reduction. Removes virtually everything dissolved in water including fluoride and heavy metals — but at a higher per-gallon cost and with the shortest filter life.
Filtration Technology
Brita
Brita’s standard filter uses activated carbon (coconut-based) with an ion exchange resin. This two-stage approach removes chlorine, chloramines, copper, mercury, and zinc while improving taste and odor. It does not meaningfully reduce lead, nitrates, or fluoride. Brita’s Longlast filter (blue, not white) is certified to NSF Standard 53 for lead reduction and handles 120 gallons versus the standard filter’s 40 gallons.
PUR
PUR uses a three-stage filter: a pre-filter mesh for sediment, an activated carbon stage, and an ion exchange resin. PUR is certified to NSF Standards 42 (aesthetic) and 53 (health), including lead reduction at 99% in independent testing. PUR also reduces more contaminants from the NSF 401 list (emerging contaminants including some pharmaceuticals) than standard Brita filters. Filter life is 40 gallons, the same as standard Brita.
ZeroWater
ZeroWater uses a five-stage ion exchange system that is fundamentally different from the activated carbon approach of Brita and PUR. The ion exchange resin exchanges all dissolved ions in the water for hydrogen and hydroxide ions, effectively removing virtually all total dissolved solids. ZeroWater’s stated goal is 000 ppm TDS (pure water) and each pitcher includes a TDS meter to verify results. This approach removes not just chlorine and lead but also nitrates, chromium, PFAS, and fluoride — contaminants that Brita and PUR do not address.
Contaminant Removal Comparison
- Chlorine: All three remove effectively
- Lead: PUR and Brita Longlast — certified. Standard Brita — not certified. ZeroWater — removes but not NSF 53 certified for lead specifically
- Fluoride: ZeroWater only (via ion exchange)
- Nitrates: ZeroWater only
- PFAS: ZeroWater only
- Chloramines: All three, though effectiveness varies
- Heavy metals: PUR and ZeroWater more comprehensively than Brita
Filter Life and Cost per Gallon
- Brita standard: 40 gallons, $6 to $8 per filter — approximately $0.18 per gallon
- Brita Longlast: 120 gallons, $16 to $20 per filter — approximately $0.15 per gallon
- PUR standard: 40 gallons, $6 to $8 per filter — approximately $0.18 per gallon
- ZeroWater: 25 to 40 gallons (varies significantly with water TDS level), $15 to $20 per filter — approximately $0.40 to $0.60 per gallon
ZeroWater’s filter life is highly dependent on source water TDS. In areas with high TDS water (above 200 ppm), ZeroWater filters can exhaust in as little as 15 to 25 gallons, making the per-gallon cost significantly higher than Brita or PUR.
Pitcher Design and Usability
Brita: Widest variety of pitcher sizes (6-cup, 10-cup, 18-cup). Filters take 5 to 10 minutes to drip through. Good refrigerator fit.
PUR: Fewer size options. Similar drip time to Brita. Slightly less intuitive filter installation. Well built.
ZeroWater: Slow filtration due to the dense five-stage media — can take 10 to 20 minutes to filter a full pitcher. Includes a TDS meter, which is genuinely useful. Pitchers are bulkier than Brita equivalents.
Which Should You Choose?
Choose Brita Longlast if: You are primarily concerned with chlorine and taste, want the lowest per-gallon cost, and need NSF 53 lead coverage.
Choose PUR if: You want the broadest NSF-certified contaminant removal among standard pitcher filters, particularly for lead and emerging contaminants.
Choose ZeroWater if: You want to remove fluoride, nitrates, PFAS, or virtually all dissolved solids — and your source water TDS is not so high that filter life becomes impractically short.
Bottom Line
For basic chlorine and taste improvement at the lowest cost, Brita Longlast wins. For the widest certified contaminant removal in a pitcher format, PUR has the edge. For those who want comprehensive filtration including fluoride and nitrates without under-sink installation, ZeroWater delivers — just factor in the higher ongoing cost per gallon, especially if you are in a high-TDS water area.