Test results

Tested. Trusted. Pure!

Our products meet the highest international standards for water safety and performance.

Certified to ASTM F838-2015ae for Legionella reduction with Log 8 efficiency (99.999999%)
ASSE 2011-2022 certified for material safety and Log 6 bacterial reduction
NSF P376 certified for material safety, and the reduction of bacteria and fungi
EPA WaterSense approved for water efficiency, meeting one of the industry’s most rigorous performance benchmarks
CE marked following EU safety and conformity standards, including the EU Drinking Water Directive (2020/2184), EN 16421, and DIN 58356

This robust certification portfolio ensures that our solutions deliver reliable, high-performance water filtration across different environments.

In addition to providing effective protection against Legionella species, our advanced filtration technology also helps reduce exposure to nearly 20 clinically significant waterborne bacterial pathogens, including gastrointestinal, respiratory, opportunistic, and nosocomial bacteria. This supports infection prevention efforts, regulatory compliance, and occupant safety in high-risk and sensitive environments.

Independent Testing

Our filters undergo rigorous testing at

IAPMO – IAPMO R&T (USA) Laboratory is one of the most respected and internationally recognized independent testing and certification institutions for plumbing, water treatment, and building products. Known for its rigorous standards, technical expertise, and accreditation under ISO/IEC 17025, IAPMO R&T provides trusted third-party validation accepted by regulatory bodies and markets worldwide.
VITENS Laboratory (EU) - one of the most advanced and trusted water quality laboratories in the EU, known for its expertise in microbiological and chemical analysis of drinking water. As part of Vitens, Europe’s largest drinking water company, its laboratory adheres to strict Dutch and EU standards and plays a vital role in safeguarding public health through rigorous, accredited testing practices.
University Medical Center Goettingen (EU) - extensive evaluations are conducted by the University Medical Center Goettingen, a renowned independent authority specializing in kitchen inspections, water quality monitoring, Legionella prevention, and pest control.

Test Results Overview

The summarized results prominently highlight the filter's effectiveness against Legionella bacteria. Below, you will find access to the original test reports and protocols, along with details on the antibacterial treatments applied to handles and showers to inhibit bacterial growth on surfaces.

12-Month Comprehensive Evaluation

Mentor Water Technologies' filter is the only Hollow Fiber filter globally that has been tested continuously over 360 days with the same filter samples. The testing schedule included evaluations on day one, followed by subsequent checks on day 30, 60, 90, 120, 180, and 360, adhering to the Microbial Reduction Protocol based on the ASTM Standard F838-05. This standard measures the bacterial retention capabilities of membrane filters used in liquid filtration. All assessments were conducted by the VITENS laboratory in the Netherlands.

Test Reports & Protocols

Waterborne Bacteria Removed by 0.08µm Filtration

Waterborne Respiratory and Opportunistic Infections:

Legionella pneumophila – 0.3–0.9 µm wide, 2–20 µm long – causes Legionnaires’ disease.
Nontuberculous Mycobacteria (NTM), e.g., Mycobacterium avium, M. abscessus – 0.2–0.6 µm wide, 1–10 µm long – causes Pulmonary infections, disseminated disease.
Pseudomonas aeruginosa – 0.5–1.0 µm – causes Pneumonia, sepsis (especially in immunocompromised patients).
Klebsiella pneumoniae – 0.5–1.2 µm – causes Pneumonia, bloodstream infections.
Acinetobacter baumannii – 0.5–0.8 µm – causes Ventilator-associated pneumonia, bloodstream infections

Waterborne Gastrointestinal Infections

Escherichia coli (E. coli) – 0.5–2.0 µm – causes Diarrhea, UTIs, food poisoning.
Salmonella enterica – 0.7–1.5 µm – causes Typhoid fever, gastroenteritis.
Shigella dysenteriae – 0.4–0.6 µm – causes Shigellosis (bacillary dysentery).
Vibrio cholerae – 0.3–0.6 µm wide, 1.5–3 µm long – causes Cholera.
Yersinia enterocolitica – 0.5–0.8 µm – causes Yersiniosis (diarrhea, abdominal pain).
Campylobacter jejuni – 0.2–0.5 µm wide, 0.5–5 µm long – causes Campylobacteriosis (diarrhea).
Listeria monocytogenes – 0.4–0.5 µm wide, 1–2 µm long – causes Listeriosis (sepsis, meningitis).
Clostridium perfringens – 0.6–1.3 µm wide, 1.3–3 µm long – causes Food poisoning, gas gangrene.
Aeromonas hydrophila – 0.3–1.0 µm wide, 1–3 µm long – causes Gastroenteritis, wound infections

Waterborne Zoonotic, Environmental, and Opportunistic Infections

Francisella tularensis – ~0.2 µm wide, 0.2–0.7 µm long – causes Tularemia.
Burkholderia pseudomallei – 0.8–1.0 µm wide, 2–5 µm long – causes Melioidosis.
Leptospira interrogans – ~0.1 µm wide, 6–20 µm long – causes Leptospirosis

Waterborne Nosocomial Pathogens

Enterococcus faecalis/faecium – 0.6–2.0 µm – causes UTIs, bacteremia.
Carbapenem-resistant Enterobacteriaceae (CRE) – ~0.5–1.5 µm – causes Multidrug-resistant infections
Vancomycin-resistant Enterococci (VRE) – ~0.6–2.0 µm – causes Healthcare-associated infections