Laboratory tests 

Filtration technology

ÖKO equips its water bottles with a technology developed by NASA (2002) that effectively filters a broad spectrum of contaminants potentially present in tap, bottled and fresh water sources worldwide.

ÖKO adventures

Discover some of ÖKO's in-the-field adventures shared by our customers themselves on social networks.

DISCLAIMER about laboratory tests

Importance of a variety of laboratory tests

They are numerous and come from several sources: manufacturers, independents and other brands using the same filter. All obtain the same results regarding the filter's efficiency, as reported by NASA (2002).

Time for longevity and reliability
Some tests are old , and in fact, this is a guarantee of longevity (the technology has been the same since 2002). Some are more recent, and still demonstrate the same efficacy with regard to the contaminants tested.
Many different water sources around the world
Essential to know: a laboratory will only test one type of water and a defined variety of contaminants. No brand can claim to filter EVERYTHING. Given the thousands of molecules, this is financially and technically impossible.
The laboratory is committed to the water and contaminants it tests.

No serious laboratory is going to commit to all molecules that have not been tested by them.

The laboratory will therefore select families and assume filtered , but without any real "written" guarantee.

At ÖKO EUROPE, we've chosen to tell you the truth so you can understand before you act.

MORAL:

It ALWAYS depends on the composition of the water passing through the filter.

So always be careful&responsible when choosing the water you filter!
(Don't look for dubious water if you have the choice and tap water or the clearest, most common water possible)

(A water bottle is a mobile product and anyone can potentially filter anything)

How can you trust ÖKO if you don't?

  • Thanks to our tens of thousands of customers, who, since 2018, have been using it on a daily basis. And thanks to real, verified reviews .
  • ÖKO EUROPE re-tested in 2023 via EUROFINS-EURACETA
    On certain contaminants* such as heavy metals, PFAS, pesticides and fluorides* (which nowadays often exceed drinking water standards)
    => Conforms to initial tests: ÖKO filters efficiently.
  • En 2025, ÖKO EUROPE lance une nouvelle campagne de tests en partenariat avec EUROFINS-EURACETA et l’Institut Pasteur,
    dans le but d’actualiser les résultats notamment sur les virus.
    Les premiers résultats sont sans appel :
    👉 Efficacité de filtration des Rotavirus : 99,992 %
    👉 Efficacité de filtration des Norovirus : 99,982 %
    => Ces données confirment qu’ÖKO assure une filtration virale hautement performante, dépassant nettement les standards du marché.
  • The filtration technology was created in 2002 by NASA, so there's hindsight and seriousness.
  • If you know a user ÖKOask him to : 

    - Simply let you taste ÖKO-filtered tap water, followed by unfiltered water. 

    Although tap water in France meets potability standards in France (and in the EU), the difference is stark

    Water filtered by ÖKO is much lighter, rounder and odor-free! 
    (chlorine, chemicals and heavy metals)! 

    Once again, it's a pleasure to drink and enjoy!

    Anyone can tell lies or mislead future customers. But the palate and the nose can't fool you.

    TRY ÖKO and you'll ADOPT it!

Tests carried out by the manufacturer & independent third parties

Virus

99,982%

Viruses

Viruses are the smallest forms of micro-organisms capable of causing disease, particularly those of faecal origin that are infectious to humans through waterborne transmission.

Some examples: Poliovirus, Norovirus, Rotavirus

Focus on Norovirus

Le genre Norovirus, dont la taille varie de 0,027 à 0,038 µm, regroupe des agents infectieux responsables de la forme la plus fréquente de gastro-entérite aiguë chez l’être humain, tous âges confondus.

Norovirus

Focus sur le Rotavirus

Le Rotavirus (0,070 µm) est l’une des principales causes de gastro-entérite virale aiguë dans le monde, en particulier chez les nourrissons et les jeunes enfants. Il se transmet principalement par voie oro-fécale, via l’eau ou les aliments contaminés.

Il est extrêmement contagieux et persiste dans l’eau pendant plusieurs semaines.

Focus on Bacteriophage MS2

Bacteriophages use bacteria as hosts for replication. Bacteriophage MS2 is a small virus that particularly infects E. coli. It has an RNA genome. Because of its small size and simplicity, it is often used in scientific research and to evaluate disinfection methods in the water industry.

Test conducted by

L'Institut Pasteur de Lille (Avril 2025)

Test conditions

Eau contaminée artificiellement par la souche murine S99 Berlin (MNV-1) du Norovirus avec une concentration de 10⁵ doses infectieuses DICT50/mL.

Conclusion

Les gourdes filtrantes ÖKO permettent de filtrer en moyenne 99,982 % du Norovirus murin (MNV-1) lorsque celui-ci est présent dans une eau contaminée.

Test conducted by

L'Institut Pasteur de Lille (Avril 2025)

Test conditions

Eau contaminée artificiellement par la souche Rotavirus simien SA-11 avec une concentration de 10⁵ doses infectieuses DICT50/mL.

Bacteria retention

Les gourdes filtrantes ÖKO permettent de filtrer en moyenne 99,992 % du Rotavirus simien (SA-11) lorsque celui-ci est présent dans une eau contaminée.

Test conducted by

Ahlstrom Munksjö

Test conditions

Water contaminated with :

- Virus (Bacteriophage MS2) influent concentration of 105 or 106 per ml (influent = untreated raw water)

COA - Certificate of Analysis

Virus test results
Test results lower section

Test conducted by

Biological Consulting Services

Sample used

Flat sheet with a surface area of 63.6 cm².

Test conditions

The water was contaminated with :

- Virus (Bacteriophage MS2): influent concentration 105 (influent = untreated raw water)

Bacteria retention

Virus retention

Bacteria

99,9993%

Bacteria

Bacteria are generally single-celled micro-organisms that can cause health problems in humans, animals or plants.

Focus on Raoultella terrigena

Raoultella terrigena is a gram-negative bacterium belonging to the Enterobacteriaceae family. It is generally associated with soil and water environments, but has also been identified in the digestive systems of various animals.

The presence of R. terrigena in water can be the result of contamination by sewage or animal waste.

Focus sur la Salmonella 

La Salmonella est un genre de bactéries pathogènes bien connu pour causer des infections gastro-intestinales (salmonelloses) chez l’humain et les animaux. Elle fait partie des principaux agents responsables de toxi-infections alimentaires collectives (TIAC) dans le monde. Elle peut survivre dans l'eau plusieurs semaines.

gram negative legionella pneumophila bacterium

Test conducted by

L'Institut Pasteur de Lille (Avril 2025)

Test conditions

Eau contaminée artificiellement par la souche Salmonella enterica subsp. enterica Typhimurium CIP 58.58 avec une concentration de 10⁵ doses infectieuses UFC/mL.

Conclusion

Les gourdes filtrantes ÖKO permettent de filtrer en moyenne 99,9993 % de Salmonella lorsque celle-ci est présente dans une eau contaminée.

Test conducted by

Ahlstrom Munksjö

Test conditions

Water contaminated with :

- Bacteria (Raoultella Terrigena) influent concentration 105 or 106 per ml (influent = untreated raw water)

COA - Certificate of Analysis

Bacteria test results
Test results lower section

Test conducted by

Biological Consulting Services

Sample used

Flat sheet with a surface area of 63.6 cm².

Test conditions

The water was contaminated with :

- Bacteria (Raoultella Terrigena) influent concentration 105 (influent = untreated raw water)

Bacteria retention

Bacteria retention

Cysts & parasites

99,9993%

Focus on Cryptosporidium

The cryptosporidium parasite causes symptoms akin to severe gastroenteritis. It can cause death (rarely in humans, but frequently in calves. It is the leading cause of death in calves under one month of age).

Focus on Giardiasis (Giardia lamblia)

Often referred to as "beaver fever", giardiasis is a disease of the digestive system.

Signs of this disease include diarrhea, abdominal pain, bloating, stomach upset, feelings of fatigue and weight loss.

What is a 3-micron pearl substitute?

This is a small spherical particle, about 3 micrometers in diameter, which is used to simulate certain micro-organisms or particles in water of the same size.

Giardia-infested intestine protozoa

Test conducted by

Ahlstrom Munksjö

Test conditions

Water contaminated with :

- Cyst (3-micron pearl substitute) influent concentration 105 or 106 per ml (influent = untreated raw water)

COA - Certificate of Analysis

Cyst test results
Test results lower section

E. coli

99,94%

Focus on E. Coli

Escherichia coli is a bacterium found in the intestines of humans and many animals. Most strains are harmless and form part of the normal intestinal flora. However, some strains can cause illness in humans, ranging from simple intestinal disorders (diarrhea, abdominal cramps) to more serious infections such as urinary tract infections, meningitis, hemolytic uremic syndrome (HUS) or life-threatening kidney disease.

escherichia coli

Test conducted by

Ahlstrom Munksjö

Flow

40 litres/m²/min

Test conditions

- Water: Ringer

- Bacteria - E. Coli

- Internal protocol used: TM 140

- Temperature 22˚C ± 1˚C

- PH 7.75 ± 0.25

- Soaking: a few seconds with DI water (deionized water)

- Analysis: ATP metry (molecular biology technique based on the principle of bioluminescence, which measures the quantity of ATP in a sample).

Retention of E. Coli

Retention of e coli

Endotoxins

83%

What are endotoxins?

Endotoxins or Lipopolysaccharides (LPS) are large molecules found in the outer membrane of gram-negative bacteria that can cause severe immune reactions in people, such as :

* Temperature rise

* Increased breathing

* Lower blood pressure

* Endotoxin shock (which can be fatal)

Endotoxin molecules

Test conducted by

Ahlstrom Munksjö

Endotoxin retention - Case study

Endotoxin retention

Results

By the end of the study, each disc had been subjected to 3.85 x 106 EU. The Disruptor range removed a higher percentage of endotoxins than Millipore's MF filters.

Despite the smaller pore size of the MF filters, the Disruptor removed more endotoxins. This shows that loading is more effective at retaining endotoxins than pore size.

Test conducted by

Northview Laboratories

Endotoxin retention - Third-party test

Endotoxin retention - Third-party test

Chlorine

95%

Focus on chlorine

Chlorine and chloramine are the main disinfectants used in public water systems.

It is widely criticized for its real health hazards and for altering the taste of water (bleach taste).

NSF requirements

* NSF 42 requires a 50% reduction in chlorine.

* Disruptor™ PAC is above 50% retention up to 28,000 L/m

escherichia coli

Test conducted by

Ahlstrom Munksjö

Sample used

Flat sheet with a surface area of 3.9 cm².

Flow

15.9 ml/min

Test conditions

Tap water from Pont Eveque-PEV :

- Temperature 20 ˚C

- TDS* 310 mg/L

- pH 7.4

- Initial chlorine concentration of 2 ppm*.

- Concentration range 0 to 2 ppm

Chlorine retention

Chlorine retention

Lead

95%

Health effects of lead

The widespread use of lead has resulted in widespread environmental contamination. At high levels of exposure (or long-term exposure), it attacks the brain and central nervous system, leading to a range of diseases and disorders.

Lead

Test conducted by

Aquadiagnostics (recognized by the Water Quality Association, USA)

Sample used

Flat sheet with a surface area of 17.3 cm².

Pressure / flow

Pressure maintained at 0.65 bar and measurement of flow variation

Lead retention - Dissolved

Lead retention at pH 6.5

Lead retention - Particles

Lead retention at pH 8.5

Medicines

95%

NSF 401 certification

NSF 401 certification for filters covers "accidental contaminants and emerging compounds".

This means that the NSF Safety and Public Health Organization has verified that the Disruptor™ filter meets their high standards for the reduction of emerging compounds and incidental contaminants (such as pesticides, herbicides, drugs and detergents) through a variety of tests carried out by NSF experts.

Medicines

Test conducted by

NSF International Laboratories

Standard applied

NSF 401

Test conditions

Tests based on estimated service life of 1000 litres/ft2 (ft2 = square feet) corresponding to 100% in tables

Prescription drugs

Phenytoin : an anti-epileptic drug

Atenolol : a beta-blocking drug

Carbamazepine : an anticonvulsant and mood stabilizer

Trimethoprim : an antibiotic drug

Estrone : a prescription contraceptive drug

Results for non-prescription drugs

Over-the-counter medicines

Ibuprofen : an over-the-counter analgesic and anti-inflammatory drug

Naproxen : an over-the-counter analgesic and anti-inflammatory drug

DEET (N,N-Diethyl-meta-toluamide) : a pesticide and common active ingredient in insect repellents

Metolachlor : an organic compound widely used as a herbicide

Linuron : a herbicide often used for grass and weed control.

Over-the-counter medicines

Chemical compounds

NSF 401

NSF 401 certification

NSF 401 certification for filters covers "accidental contaminants and emerging compounds".

This means that the NSF Safety and Public Health Organization has verified that the Disruptor™ filter meets their high standards for the reduction of emerging compounds and incidental contaminants (such as pesticides, herbicides, drugs and detergents) through a variety of tests carried out by NSF experts.

Chemical compounds

Test conducted by

NSF International Laboratories

Standard applied

NSF 401

Test conditions

Tests based on estimated service life of 1000 litres/ft2 (ft2 = square feet) corresponding to 100% in tables

Chemical compounds

TCEP : a chemical compound used as a flame retardant, plasticizer and viscosity regulator in various types of polymers, including polyurethanes, polyester resins and polyacrylates.

TCPP : a chemical compound used as a flame retardant.

BPA (Bisphenol A): a chemical compound used as a plasticizer. It is produced on an industrial scale by the condensation of phenol and acetone. Worldwide production is expected to reach 10 million tonnes by 2022.

Nonylphenol : a collection of compounds often used as precursors for commercial detergents.

Chemical compounds

Other products

95%

Focus on micro-contaminants

Various micro-contaminants are now detected in many wastewaters and some drinking water sources.

Although the dangers posed by these contaminants to humans and the environment are not well understood, the reduction or elimination of these compounds is a concern for many organizations and health authorities.

Chemical products PCB

Test conducted by

NSF International Laboratories

Elimination of Penicilinne G

penicilin G elimination

Conclusion on Penicilinne G

Penicillin G was used as a representative antibiotic for the tests.

It was first studied using a 2 mg/l challenge solution. This graph shows that all the antibiotic was removed from 13 liters of water. At more typical concentrations in the 2 micrograms per liter range, 0.093 m² of Disruptor could theoretically treat over 900,000 liters of water if it were free of other contaminants.

Elimination of flumequine

elimination of flumequine

Conclusion on flumequine 

Flumequine is a chemotherapeutic antibiotic implicated in tendon rupture, DNA damage and anaphylactic shock. It has been withdrawn from the market, but is representative of the flumequine class of drugs. Data show complete elimination from 3 liters of water at a concentration of 10 mg/l. At more typical concentrations in the 2 micrograms per liter range, one square foot of Disruptor could theoretically treat over a million liters of water if free of other contaminants.

PCB disposal

PCB disposal

Conclusion on PCBs

Polychlorinated biphenyls (PCBs) are man-made organic chemicals known for their toxic and carcinogenic effects. Independent tests have shown that Disruptor is effective in removing PCBs from water, as shown in the graph above.

Pesticides

95%

Description

Pesticides and herbicides are widely used in agriculture and gardening to increase productivity and prevent pest damage.

These chemicals can have harmful effects on the environment and human health. They can leach into surface water and groundwater through runoff or infiltration, contaminating drinking water sources.

Herbicide pesticides

Test conducted by

NSF International Laboratories

NSF/ANSI 244 results

- Herbicide 2,4 -D eliminated at more than 95% with an initial influent concentration of 70 μg +/-10% /L ;

- Atrazine herbicide eliminated over 95% with an initial influent concentration of 3 μg +/-10% /L ;

- 9 additional herbicides more than 95% eliminated according to the U.S. Environmental Protection Agency;

- Pesticide Chlordane more than 95% eliminated with an initial influent concentration of 2 μg +/-10% /L;

- Pesticide Heptachlor eliminated at more than 95% with an initial influent concentration of 0.4 μg +/-10% /L ;

- Lindane pesticide eliminated at more than 95% with an initial influent concentration of 0.2 μg +/-10% /L ;

- 11 additional pesticides more than 95% eliminated, according to the US Environmental Protection Agency;

Plastics

> 99%

Description

By its very nature, plastic naturally breaks down into tiny plastic particles.

Read our article on the subject: here

Herbicide pesticides

Test conducted by

NSF International Laboratories

NSF/ANSI 244 results

Over 99% elimination at an initial concentration of 100 parts/L, each larger than 2 μg

Tests carried out by ÖKO EUROPE via EUROFINS (tap water)

Pesticides and metabolites

Test conducted by

EUROFINS | EURACETA (Laboratoire d'Analyses et de Contrôles Environnementaux, Toxicologiques & Agro-alimentaires)

Test conditions

Tap water from Limal - Samples taken by Euraceta

Period

July 2023

Information on contaminants detected

Most of the contaminants below are derived from the chemical degradation of herbicides: Atrazine, dichlobenil, chlorothalonil, S-metolachlor and chloridazone, most of which are harmful or very harmful to health and are banned or in the process of being banned.

See our dedicated blog post here.

Results BEFORE and AFTER filtration

Contaminants in tap water before and after filtration

Heavy metals

Test conducted by

EUROFINS | EURACETA (Laboratoire d'Analyses et de Contrôles Environnementaux, Toxicologiques & Agro-alimentaires)

Test conditions

Tap water with voluntary addition of 20 µg/l of 12 metals (cf. Sb, Se, As, Cr,Cd,Pb, Ni, Mn, Fe,Cu, Ag & Zn)

Period

July 2023

Results BEFORE and AFTER filtration

Analysis 2023 metal filtration

Conclusion

If your water is too rich in nitrates or chlorates and you want to prevent this, you can use an osmosis unit to filter out these contaminants.

In laboratory analysis, the thresholds found after filtration are infinitesimal and in line with the manufacturer's official filtration table (and with independent laboratories that have come up with the same results).

Fluorine

Test conducted by

EUROFINS | EURACETA (Laboratoire d'Analyses et de Contrôles Environnementaux, Toxicologiques & Agro-alimentaires)

Test conditions

Tap water with voluntary addition of 2 mg/l Fluoride

Period

August 2023

Information on fluoride

Fluoride is one of ten major chemicals posing a public health problem, alongside asbestos and arsenic. An EU directive has set the maximum permissible level of fluoride in water at 1.5 mg/l in Europe.

Some bottled waters are also not far from this threshold.

However, a 5-year-old child should not exceed the threshold of 1 mg/day, or risk developing dental fluorosis, as is the case for 2% of children in France.

See our dedicated blog post here.

Results BEFORE and AFTER filtration

Analysis 2023 fluorine filtration

Perfluorinated (PFAS)

Test conducted by

EUROFINS | EURACETA (Laboratoire d'Analyses et de Contrôles Environnementaux, Toxicologiques & Agro-alimentaires)

Test conditions

Tap water

Period

December 2023

Information on perfluorinated compounds (PFAS)

Perfluorochemicals, also known as per- and polyfluoroalkyl substances (PFAS), are a family of chemical compounds widely used for their unique properties, such as resistance to water, stains and grease. They are often found in a variety of everyday products, including non-stick coatings, textiles, food packaging and some fire-fighting equipment. However, their exceptional chemical stability, which gives them their usefulness, also makes these substances particularly persistent in the environment and in living organisms, leading to growing concerns about their potential impact on human health and ecology.

Results BEFORE and AFTER filtration

Analysis 2023 filtration of perfluorinated PFAs
Eurofins Institut Pasteur de Lille

Consult the official documents

Tests officiels de l'Institut Pasteur

Logo Institut Pasteur Lille

1

Gourde filtrante sur Salmonella
Logo Institut Pasteur Lille

2

Gourde filtrante sur MNV-1
Logo Institut Pasteur Lille

3

Gourde filtrante sur Rotavirus
Logo Institut Pasteur Lille

4

Filtre L3 sur Salmonella
Logo Institut Pasteur Lille

5

Filtre L3 sur MNV-1
Logo Institut Pasteur Lille

6

Filtre L3 sur Rotavirus
⚠️ Attention : Toute utilisation ou diffusion de ces tests est strictement interdite.
  Nous payons un droit annuel pour publier ces résultats.
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Documents officiels des tests Eurofins

Logo Eurofins - Euraceta

01

Analysis of filtration capacity for pesticides, metabolites and heavy metals
Logo Eurofins - Euraceta

02

Analysis of fluoride (fluorine) filtration capacity
Logo Eurofins - Euraceta

03

Analysis of perfluoride (pfas) filtration capacities

Official documents

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01

Ahlstrom's presentation of the Disruptor
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02

Presentation of several analysis results by the JoJo company
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03

Test results for NSF certification
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04

Article on the U.S. Army Public Health Center filter
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05

Introducing US Water's electro-adsorption technology

Translated documents

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01

Ahlstrom's presentation of the Disruptor
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02

Presentation of several analysis results by JoJo (translated version)
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03

NSF certification test results (translated version)
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04

Article on the U.S. Army Public Health Center filter
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05

US Water's electro-adsorption technology presentation

Our press coverage

Contaminated tap water?

Filtering YOUR WATER away from home