Which filter removes the most contaminants?

AquaTru, by a meaningful margin. The NSF certifications tell the story: AquaTru holds 42, 53, 58, and 401, which cover aesthetic, health-related, RO performance, and emerging compounds including PFAS, pharmaceuticals, and BPA. Berkey publishes strong independent lab reports but does not hold NSF 53 on PFAS. Brita Elite is NSF 42 and 53 certified but only for a short list; it does not address PFAS, fluoride, or pharmaceutical residues.

Does Brita actually do anything?

Yes, within a narrow scope. The Brita Elite cartridge is NSF certified to reduce lead, chlorine, cysts, benzene, and a handful of VOCs. That's real filtration for specific contaminants. What it won't do: remove PFAS, fluoride, pharmaceuticals, or dissolved solids. Brita is fine if your only goal is better taste and some lead reduction in an older-pipes apartment. It's not a full answer if your zip code shows PFAS contamination on the EWG Tap Water Database.

Why doesn't Berkey have NSF certification?

Berkey's stated position is that NSF product certification is expensive and that independent third-party lab reports accomplish the same purpose. The reports they publish (from labs including Envirotek) are legitimate and the contaminant reduction numbers are impressive. The problem is the paper trail: NSF is the standard regulators reference, and Berkey's lack of it has led to EPA and state regulatory friction, including a 2021 EPA action in Iowa. For off-grid or travel use, this matters less. For daily home use with a grid connection, AquaTru's cleaner paper trail is worth the price.

What's the cost per gallon difference?

Rough math: AquaTru's four filters cost about $150 per year at a gallon a day, roughly $0.40 per gallon. Berkey Black elements last ~6,000 gallons for a pair, so about $0.03 per gallon, but replacement fluoride/arsenic filters (PF-2) shorten that. Brita Elite cartridges are about $0.25 per gallon. RO systems are higher upfront and have wastewater costs; gravity and pitcher filters are lower upfront with higher per-gallon cartridge costs at scale.

Do any of these remove fluoride?

AquaTru does (reverse osmosis reliably removes fluoride). Berkey removes fluoride only if you add the PF-2 fluoride filters, which are a separate purchase and shorten filter life. Brita Elite does not remove fluoride. If fluoride removal is specifically what you want, AquaTru or any under-sink RO is the direct answer.

Should I just buy bottled water instead?

No. A 2024 PNAS paper (Qian et al.) using single-particle chemical imaging found bottled water contains up to 240,000 plastic particles per liter, most of them nanoplastics previously too small to detect. Filtered tap water is almost certainly a lower-particle exposure route, and it costs a tiny fraction of bottled. Bottled water has a place for emergencies and travel; it's not the baseline answer.

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Brita vs. Berkey vs. AquaTru

Clear stream of water pouring from a plain glass pitcher into a clean drinking glass on a stone counter, soft morning kitchen light.

Door Het team van PlasticFreeLabBijgewerkt op April 20, 202611 min leestijd

Brita, Berkey, AquaTru: drie filters, drie verschillende taken. Een eerlijke vergelijking met de gegevens over contaminanten.

De veelgestelde vragen

Wat lezers vervolgens vragen.

Which filter removes the most contaminants?: AquaTru, by a meaningful margin. The NSF certifications tell the story: AquaTru holds 42, 53, 58, and 401, which cover aesthetic, health-related, RO performance, and emerging compounds including PFAS, pharmaceuticals, and BPA. Berkey publishes strong independent lab reports but does not hold NSF 53 on PFAS. Brita Elite is NSF 42 and 53 certified but only for a short list; it does not address PFAS, fluoride, or pharmaceutical residues.
Does Brita actually do anything?: Yes, within a narrow scope. The Brita Elite cartridge is NSF certified to reduce lead, chlorine, cysts, benzene, and a handful of VOCs. That's real filtration for specific contaminants. What it won't do: remove PFAS, fluoride, pharmaceuticals, or dissolved solids. Brita is fine if your only goal is better taste and some lead reduction in an older-pipes apartment. It's not a full answer if your zip code shows PFAS contamination on the EWG Tap Water Database.
Why doesn't Berkey have NSF certification?: Berkey's stated position is that NSF product certification is expensive and that independent third-party lab reports accomplish the same purpose. The reports they publish (from labs including Envirotek) are legitimate and the contaminant reduction numbers are impressive. The problem is the paper trail: NSF is the standard regulators reference, and Berkey's lack of it has led to EPA and state regulatory friction, including a 2021 EPA action in Iowa. For off-grid or travel use, this matters less. For daily home use with a grid connection, AquaTru's cleaner paper trail is worth the price.
What's the cost per gallon difference?: Rough math: AquaTru's four filters cost about $150 per year at a gallon a day, roughly $0.40 per gallon. Berkey Black elements last ~6,000 gallons for a pair, so about $0.03 per gallon, but replacement fluoride/arsenic filters (PF-2) shorten that. Brita Elite cartridges are about $0.25 per gallon. RO systems are higher upfront and have wastewater costs; gravity and pitcher filters are lower upfront with higher per-gallon cartridge costs at scale.
Do any of these remove fluoride?: AquaTru does (reverse osmosis reliably removes fluoride). Berkey removes fluoride only if you add the PF-2 fluoride filters, which are a separate purchase and shorten filter life. Brita Elite does not remove fluoride. If fluoride removal is specifically what you want, AquaTru or any under-sink RO is the direct answer.
Should I just buy bottled water instead?: No. A 2024 PNAS paper (Qian et al.) using single-particle chemical imaging found bottled water contains up to 240,000 plastic particles per liter, most of them nanoplastics previously too small to detect. Filtered tap water is almost certainly a lower-particle exposure route, and it costs a tiny fraction of bottled. Bottled water has a place for emergencies and travel; it's not the baseline answer.

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Een kleine groep onderzoekers en redacteuren die door de ruis rond het giftvrije leven heen werkt. Wij lezen de studies, lezen de etiketten, testen de producten — en stellen onze aanbevelingen bij naarmate de wetenschap vordert. Wij aanvaarden geen betaling voor productplaatsing, vermelden elke affiliate-relatie en noemen de merken die wij afwijzen.

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Brita vs. Berkey vs. AquaTru

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