Testing and certifications

What each euroguard cartridge takes out of your water

Six cartridges, five systems, one page. Choose a cartridge to see what it is certified for, what it has been tested for, what is still in testing, and what it does not claim. Every figure comes from an independent laboratory against the protocol named next to it.

Cartridge performance

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Standards and certifications across the range

A certification means an accredited body tested the product and lists it publicly. A lab test to the same protocol produces the same data without the listing. Each standard below shows which cartridges hold which.

NSF/ANSI 42

Aesthetic effects: chlorine, chloramine, taste, odour, particulates.

Classic Carbon · Certified TriPure™ · Certified TriCera Flow™ · Certified TriCera™ Fluoride · Certified CeraCore™ · Certified Under-counter · Certified

NSF International and IAPMO R&T public listings

NSF/ANSI/CAN 372

Lead content: no part touching the water contains more than 0.25% lead by weighted average.

Classic Carbon · Certified TriPure™ · Certified TriCera Flow™ · Certified TriCera™ Fluoride · Certified CeraCore™ · Certified Under-counter · Certified

NSF International public listing

NSF/ANSI 53

Health effects: lead, mercury, PFOA/PFOS, VOCs, cysts, fluoride and other contaminants with a health limit.

Classic Carbon · In progress TriPure™ · Lab-tested TriCera Flow™ · In progress TriCera™ Fluoride · Lab-tested CeraCore™ · Lab-tested Under-counter · In progress

IAPMO R&T

NSF/ANSI 401

Emerging compounds: pharmaceuticals, hormones, flame retardants, pesticides, microplastics.

Classic Carbon · In progress TriPure™ · Lab-tested TriCera Flow™ · In progress TriCera™ Fluoride · Lab-tested CeraCore™ · Lab-tested

IAPMO R&T

EU 10/2011 food contact

Plastic materials in contact with food and water; declaration of compliance for the tap filter's seals and non-metal parts.

CeraCore™ · Lab-tested

Independent accredited European laboratory

EU Drinking Water Directive 2020/2184

Harmonised certification of materials in contact with drinking water (Delegated Regulation 2024/370, Implementing Decision 2024/368), applicable from 31 December 2026.

Under-counter · In progress

DVGW CERT (notified body)

UK Regulation 4 (BS 6920)

Water Supply (Water Fittings) Regulations: materials in contact with wholesome water.

Under-counter · In progress

Independent UK drinking-water compliance assessment

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Certified listed by NSF International or IAPMO R&T against the standard Lab-tested ISO/IEC 17025 laboratory, NSF/ANSI protocol, no listing Report pending tested or in testing; published when the report issues Not claimed this cartridge does not claim reduction

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Which cartridge fits which system

Gravity cartridges use the standard 1/4-inch thread, so they interchange across every euroguard gravity system and most compatible gravity housings.

System Classic Carbon TriPure™ TriCera Flow™ TriCera™ Fluoride CeraCore™ Under-counter
euroguard One gravity system Polished stainless-steel gravity system ✓ ✓ ✓ ✓ — —
Gravity filter — Midnight Black & Moonlight White (6 L / 8.5 L) Powder-coated stainless steel ✓ ✓ ✓ ✓ — —
12 L family gravity system Large-capacity stainless-steel gravity system ✓ ✓ ✓ ✓ — —
Stainless steel tap filter 304 stainless steel housing, diverter, 4 adapters — — — — ✓ —
Under-counter system Durable housing with push-fit installation — — — — — ✓
From source water to verified result

How independent testing works

A controlled process makes every number easier to understand, compare and trace back to a named protocol.

Prepare the challenge water

The laboratory adds a measured concentration of each target contaminant to controlled source water. Temperature, pH, pressure and flow are recorded so every test can be repeated under the same conditions.

Run the complete cartridge cycle

Challenge water passes through a new cartridge in the housing it is designed for. Samples are taken at defined intervals, including near the rated capacity, to measure how performance changes through its service life.

Measure and independently verify

Accredited analytical methods compare the water before and after filtration. Results are reported as concentrations, percentage reduction or log reduction, then checked against the requirements of the named test protocol.

Publish results with clear status

Certified, independently lab-tested and in-progress results are labelled separately. Complete reports and supporting references can be requested from the euroguard team.

Questions about the results

Are euroguard filters NSF certified?

The activated carbon in every cartridge is certified by NSF International to NSF/ANSI 42 (chlorine, taste and odour) and NSF/ANSI/CAN 372 (lead content). Health-contaminant results to NSF/ANSI 53 and 401 come from testing to those protocols at IAPMO R&T, an ISO/IEC 17025 laboratory, and are shown as lab-tested rather than certified.

Why do the cartridges show different results?

Because they are different filters. A carbon block handles chlorine, PFAS, lead and organics. A ceramic shell or UF membrane adds bacteria and cysts. Activated alumina adds fluoride. Anti-scale resin adds hardness. The table only shows a claim where the cartridge has the stage that makes it, so a carbon-only cartridge never lists bacteria as pending.

Can I trust the microbiological claims on well water?

The ceramic and UF cartridges are tested against bacteria and cysts, and the TriCera™ Fluoride is designed for well and spring water. For well water with a high bacterial load, test the source first and use two cartridges. No cartridge on this page claims virus reduction unless the table says so.

What does log 6 or 99.9999% mean?

A log reduction is a power of ten. Log 3 is 99.9%, log 4 is 99.99%, log 6 is 99.9999%: one organism in a million gets through. Laboratories report bacteria this way because the challenge water contains millions of organisms per litre.

Can I see the actual lab reports?

Yes. Report numbers are listed on each cartridge's panel above, and we email the full documents on request.

Find your best filtration setup

Turn the test results into the right choice for your home

Tell us about your tap, water source and priorities. We'll point you to the most suitable euroguard cartridge and system.

Takes less than two minutes Matched to your water priorities Lab reports available on request
Take the water quiz Ask for the reports

Important testing information

Testing was carried out under controlled laboratory conditions on new cartridges in euroguard housings. Contaminants were added to the challenge water at the concentrations shown and measured after filtration. Performance in your home depends on your water, the age of the cartridge and how the system is used. Not all contaminants listed will be present in your water. Gravity and tap cartridges without a ceramic or UF stage are intended for municipally treated water; ceramic and UF cartridges tested against bacteria and cysts may be used with water of unknown microbiological quality only as stated on the product page. Where no NSF/ANSI protocol exists for a contaminant, the laboratory's accredited method is stated in the report. Certification listings can be verified on the certifying body's public database. NSF/ANSI, IAPMO, DVGW, Eurofins, Berkey, Doulton and British Berkefeld are the marks of their respective owners; compatibility statements do not imply endorsement.