Every filter on this page meets our baseline requirementsOur baseline requirementsCE marking, compliance with the EU Drinking Water Directive 2020/2184, and availability in the Netherlands.. We split the market into three groups by the strength of the evidence behind each filter. That distinction is the heart of our comparison.
A: Independently certified (NSF/IAPMO/WQA)
B: Partially certified
C: Manufacturer claim only
Independent effectiveness certification (NSF, IAPMO, WQA) is a strong plus, not a baseline requirement. It is what determines this A, B or C grouping: the stronger the independent proof behind a filter's removal claims, the higher its group.
Price per litre is calculated on a fixed assumption of 2,190 litres of drinking water per year (2 people × 3 L/day × 365). Shown only for drinking-water filters.
28filters shown
AquaTru
Carafe
Recommended
Compact countertop RO in carafe form for 1-2 people, same certification as the Classic.
Meets baseline requirementsMeets baseline requirementsCE marking, compliance with the EU Drinking Water Directive 2020/2184, and availability in the Netherlands.NSF 42NSF 42Standard for aesthetic water quality. Confirms the filter improves taste, odour and clarity (mainly chlorine). Not aimed at health contaminants.NSF 53NSF 53Standard for health-related contaminants. Confirms the filter reduces specifically named harmful substances such as lead, cysts or volatile organic compounds (solvents and fuel residues).NSF 58NSF 58Standard for reverse-osmosis systems. Confirms broad reduction of total dissolved solids (the sum of all dissolved minerals and salts in water). The exact contaminants are listed per product.NSF 401NSF 401Standard for emerging compounds. Confirms reduction of e.g. pharmaceutical residues and pesticides found in trace amounts in drinking water.NSF P473NSF P473Standard for PFAS removal (such as PFOA and PFOS), retired in 2022. Now merged into NSF 53 and 58.IAPMOIAPMOIndependent certification body (IAPMO R&T). Tests to the same NSF/ANSI standards as NSF itself. An equivalent, trustworthy mark.
Filter lifepurified ~1.9 L per cycle
Maintenance6 months
Warranty1 yr
OriginUnited States
€ 425
indication
± 4 ct/Lfilter cost
AquaTru
Classic
Recommended
Countertop reverse-osmosis system requiring no installation, independently certified for 84 contaminants.
Meets baseline requirementsMeets baseline requirementsCE marking, compliance with the EU Drinking Water Directive 2020/2184, and availability in the Netherlands.NSF 42NSF 42Standard for aesthetic water quality. Confirms the filter improves taste, odour and clarity (mainly chlorine). Not aimed at health contaminants.NSF 53NSF 53Standard for health-related contaminants. Confirms the filter reduces specifically named harmful substances such as lead, cysts or volatile organic compounds (solvents and fuel residues).NSF 58NSF 58Standard for reverse-osmosis systems. Confirms broad reduction of total dissolved solids (the sum of all dissolved minerals and salts in water). The exact contaminants are listed per product.NSF 401NSF 401Standard for emerging compounds. Confirms reduction of e.g. pharmaceutical residues and pesticides found in trace amounts in drinking water.NSF P473NSF P473Standard for PFAS removal (such as PFOA and PFOS), retired in 2022. Now merged into NSF 53 and 58.IAPMOIAPMOIndependent certification body (IAPMO R&T). Tests to the same NSF/ANSI standards as NSF itself. An equivalent, trustworthy mark.
Filter lifeVOC filter ~2270 L, RO membrane ~2 years
Maintenance6 months
Water ratio4:1
Warranty1 yr
OriginUnited States
€ 475
indication
± 4 ct/Lfilter cost
British Berkefeld
Ultra Sterasyl 4,5L
Recommended
Compact 4.5 L variant of the certified British Berkefeld for 1-2 people.
Meets baseline requirementsMeets baseline requirementsCE marking, compliance with the EU Drinking Water Directive 2020/2184, and availability in the Netherlands.NSF 42NSF 42Standard for aesthetic water quality. Confirms the filter improves taste, odour and clarity (mainly chlorine). Not aimed at health contaminants.NSF 53NSF 53Standard for health-related contaminants. Confirms the filter reduces specifically named harmful substances such as lead, cysts or volatile organic compounds (solvents and fuel residues).NSF 401NSF 401Standard for emerging compounds. Confirms reduction of e.g. pharmaceutical residues and pesticides found in trace amounts in drinking water.WRASWRASUK approval for material safety. Confirms the material releases no harmful substances into drinking water. Says nothing about what it filters.
Meets baseline requirementsMeets baseline requirementsCE marking, compliance with the EU Drinking Water Directive 2020/2184, and availability in the Netherlands.NSF 42NSF 42Standard for aesthetic water quality. Confirms the filter improves taste, odour and clarity (mainly chlorine). Not aimed at health contaminants.NSF 53NSF 53Standard for health-related contaminants. Confirms the filter reduces specifically named harmful substances such as lead, cysts or volatile organic compounds (solvents and fuel residues).NSF 401NSF 401Standard for emerging compounds. Confirms reduction of e.g. pharmaceutical residues and pesticides found in trace amounts in drinking water.WRASWRASUK approval for material safety. Confirms the material releases no harmful substances into drinking water. Says nothing about what it filters.
Filter lifeUltra Sterasyl element ~ up to 11,000 L
Meets baseline requirementsMeets baseline requirementsCE marking, compliance with the EU Drinking Water Directive 2020/2184, and availability in the Netherlands.NSF 42NSF 42Standard for aesthetic water quality. Confirms the filter improves taste, odour and clarity (mainly chlorine). Not aimed at health contaminants.NSF 53NSF 53Standard for health-related contaminants. Confirms the filter reduces specifically named harmful substances such as lead, cysts or volatile organic compounds (solvents and fuel residues).NSF 401NSF 401Standard for emerging compounds. Confirms reduction of e.g. pharmaceutical residues and pesticides found in trace amounts in drinking water.WRASWRASUK approval for material safety. Confirms the material releases no harmful substances into drinking water. Says nothing about what it filters.
Meets baseline requirementsMeets baseline requirementsCE marking, compliance with the EU Drinking Water Directive 2020/2184, and availability in the Netherlands.NSF 42NSF 42Standard for aesthetic water quality. Confirms the filter improves taste, odour and clarity (mainly chlorine). Not aimed at health contaminants.NSF 53NSF 53Standard for health-related contaminants. Confirms the filter reduces specifically named harmful substances such as lead, cysts or volatile organic compounds (solvents and fuel residues).NSF 401NSF 401Standard for emerging compounds. Confirms reduction of e.g. pharmaceutical residues and pesticides found in trace amounts in drinking water.WRASWRASUK approval for material safety. Confirms the material releases no harmful substances into drinking water. Says nothing about what it filters.
Meets baseline requirementsMeets baseline requirementsCE marking, compliance with the EU Drinking Water Directive 2020/2184, and availability in the Netherlands.Independently lab-tested (EU)Independently lab-tested (EU)Independently tested by Measurlabs, an ISO/IEC 17025-accredited EU laboratory. The European route to independent verification, equivalent to NSF testing but without the US certification mark.
Meets baseline requirementsMeets baseline requirementsCE marking, compliance with the EU Drinking Water Directive 2020/2184, and availability in the Netherlands.NSF 42NSF 42Standard for aesthetic water quality. Confirms the filter improves taste, odour and clarity (mainly chlorine). Not aimed at health contaminants.NSF 53NSF 53Standard for health-related contaminants. Confirms the filter reduces specifically named harmful substances such as lead, cysts or volatile organic compounds (solvents and fuel residues).WRASWRASUK approval for material safety. Confirms the material releases no harmful substances into drinking water. Says nothing about what it filters.
Uses the BioTect Ultra element: NSF-certified for lead/bacteria/cysts/chlorine. NO explicit PFAS certification (unlike the British Berkefeld Ultra Sterasyl). For PFAS, RO or British Berkefeld is stronger.
Meets baseline requirementsMeets baseline requirementsCE marking, compliance with the EU Drinking Water Directive 2020/2184, and availability in the Netherlands.NSF 42NSF 42Standard for aesthetic water quality. Confirms the filter improves taste, odour and clarity (mainly chlorine). Not aimed at health contaminants.NSF 53NSF 53Standard for health-related contaminants. Confirms the filter reduces specifically named harmful substances such as lead, cysts or volatile organic compounds (solvents and fuel residues).
Meets baseline requirementsMeets baseline requirementsCE marking, compliance with the EU Drinking Water Directive 2020/2184, and availability in the Netherlands.NSF 42NSF 42Standard for aesthetic water quality. Confirms the filter improves taste, odour and clarity (mainly chlorine). Not aimed at health contaminants.NSF 53NSF 53Standard for health-related contaminants. Confirms the filter reduces specifically named harmful substances such as lead, cysts or volatile organic compounds (solvents and fuel residues).
Only recommended with the MAXTRA PRO All-in-1 filter (not the basic MAXTRA). MAXTRA PRO is NSF 42/53 for lead/chromium; the PFAS claim is Brita-internal -- verify whether it falls under NSF 53.
Meets baseline requirementsMeets baseline requirementsCE marking, compliance with the EU Drinking Water Directive 2020/2184, and availability in the Netherlands.NSF 42NSF 42Standard for aesthetic water quality. Confirms the filter improves taste, odour and clarity (mainly chlorine). Not aimed at health contaminants.NSF 53NSF 53Standard for health-related contaminants. Confirms the filter reduces specifically named harmful substances such as lead, cysts or volatile organic compounds (solvents and fuel residues).
The best option within the tap-mounted segment. Brita claim of PFAS reduction via the membrane; jug models with MAXTRA PRO are usually more effective.
Meets baseline requirementsMeets baseline requirementsCE marking, compliance with the EU Drinking Water Directive 2020/2184, and availability in the Netherlands.NSF 42NSF 42Standard for aesthetic water quality. Confirms the filter improves taste, odour and clarity (mainly chlorine). Not aimed at health contaminants.NSF 53NSF 53Standard for health-related contaminants. Confirms the filter reduces specifically named harmful substances such as lead, cysts or volatile organic compounds (solvents and fuel residues).NSF 58NSF 58Standard for reverse-osmosis systems. Confirms broad reduction of total dissolved solids (the sum of all dissolved minerals and salts in water). The exact contaminants are listed per product.IAPMOIAPMOIndependent certification body (IAPMO R&T). Tests to the same NSF/ANSI standards as NSF itself. An equivalent, trustworthy mark.
Formal NSF 58 certification for TDS reduction + NSF 372 lead-free material. Broader claims (42/53) are manufacturer-tested.
Meets baseline requirementsMeets baseline requirementsCE marking, compliance with the EU Drinking Water Directive 2020/2184, and availability in the Netherlands.NSF 42NSF 42Standard for aesthetic water quality. Confirms the filter improves taste, odour and clarity (mainly chlorine). Not aimed at health contaminants.NSF 53NSF 53Standard for health-related contaminants. Confirms the filter reduces specifically named harmful substances such as lead, cysts or volatile organic compounds (solvents and fuel residues).NSF 58NSF 58Standard for reverse-osmosis systems. Confirms broad reduction of total dissolved solids (the sum of all dissolved minerals and salts in water). The exact contaminants are listed per product.IAPMOIAPMOIndependent certification body (IAPMO R&T). Tests to the same NSF/ANSI standards as NSF itself. An equivalent, trustworthy mark.
Waterdrop advertises NSF/ANSI 42, 53, 58 and 372. However, the formal NSF 58 certification primarily covers TDS and chromium-6 reduction; the broader contaminant claims (including PFAS) have been tested by the manufacturer and SGS, but are not fully NSF-certified.
Meets baseline requirementsMeets baseline requirementsCE marking, compliance with the EU Drinking Water Directive 2020/2184, and availability in the Netherlands.NSF 42NSF 42Standard for aesthetic water quality. Confirms the filter improves taste, odour and clarity (mainly chlorine). Not aimed at health contaminants.
Meets baseline requirementsMeets baseline requirementsCE marking, compliance with the EU Drinking Water Directive 2020/2184, and availability in the Netherlands.
Meets baseline requirementsMeets baseline requirementsCE marking, compliance with the EU Drinking Water Directive 2020/2184, and availability in the Netherlands.
Meets baseline requirementsMeets baseline requirementsCE marking, compliance with the EU Drinking Water Directive 2020/2184, and availability in the Netherlands.
Meets baseline requirementsMeets baseline requirementsCE marking, compliance with the EU Drinking Water Directive 2020/2184, and availability in the Netherlands.
Meets baseline requirementsMeets baseline requirementsCE marking, compliance with the EU Drinking Water Directive 2020/2184, and availability in the Netherlands.
Meets baseline requirementsMeets baseline requirementsCE marking, compliance with the EU Drinking Water Directive 2020/2184, and availability in the Netherlands.
Meets baseline requirementsMeets baseline requirementsCE marking, compliance with the EU Drinking Water Directive 2020/2184, and availability in the Netherlands.
Meets baseline requirementsMeets baseline requirementsCE marking, compliance with the EU Drinking Water Directive 2020/2184, and availability in the Netherlands.
Meets baseline requirementsMeets baseline requirementsCE marking, compliance with the EU Drinking Water Directive 2020/2184, and availability in the Netherlands.
Meets baseline requirementsMeets baseline requirementsCE marking, compliance with the EU Drinking Water Directive 2020/2184, and availability in the Netherlands.
Meets baseline requirementsMeets baseline requirementsCE marking, compliance with the EU Drinking Water Directive 2020/2184, and availability in the Netherlands.
Why not recommended?
The Black Berkey element has its own lab-test claims but no NSF certification. EU distribution historically problematic. To be reconsidered in the pillar update. Note: the system can use certified British Berkefeld elements.
Meets baseline requirementsMeets baseline requirementsCE marking, compliance with the EU Drinking Water Directive 2020/2184, and availability in the Netherlands.
Why not recommended?
The Aluna is often sold with the basic MAXTRA filter (taste/limescale only), not the MAXTRA PRO. Without the PRO filter, no NSF 53 for PFAS/lead/pharmaceutical residues. Physically identical to the Marella, but the standard filter type differs.
Meets baseline requirementsMeets baseline requirementsCE marking, compliance with the EU Drinking Water Directive 2020/2184, and availability in the Netherlands.
Why not recommended?
Magnesium addition as a health claim without proof of added value. No NSF 53/58/401 for PFAS, lead or pharmaceutical residues. Pillar position to be reconsidered in a separate session.
Meets baseline requirementsMeets baseline requirementsCE marking, compliance with the EU Drinking Water Directive 2020/2184, and availability in the Netherlands.
Why not recommended?
Reduces up to 99% of chlorine and taste/sediment, but not certified for PFAS, lead or pharmaceutical residues. The brand name inspires confidence; the product mainly offers taste improvement, not health protection.
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