The Ultimate Star Filter® in detail: NSF® certification, REACH compliance and analyses

At Star Water Filter®, quality is not an option. We design, develop and test our own filtration systems to guarantee purer, safer and sustainably protected water.

The result: reliable, autonomous gravity filtration that is among the most comprehensive on the market, without compromising on material safety or performance.

The Ultimate Star Filter® in detail: NSF® certifications, REACH compliance and analyses

Transparency & evidence: what really sets our filter apart

Thanks to patented technology, NSF®-certified components and strict compliance with European REACH standards, Ultimate Star Filter® filters stand out for their real technological advantage, validated by independent tests and laboratory analyses. A step ahead, validated by science — and felt with every glass of water.

👉 These are not just promises — they are verifiable facts.

Documents & Proofs

At Star Water Filter®, we value transparency: certifications, compliance and reports are available for review.

Note: the NSF® designation refers to the components listed on our dedicated page, with supporting documentation.

Key figures

Flow rate (at start-up) 12–16 L/hour
Lifespan Up to 6,000 L per pair of filters (≈ 2 years of normal use)
Tests carried out 3,200 L tested in the laboratory (beyond the nominal lifespan)
Estimated cost ≈ £0.02 / litre filtered
Material compliance REACH (materials in contact with water)

Performance may vary depending on the quality of the inlet water, usage and contaminants present. Please refer to the documents published above.

A patented design, created with your health in mind

Unlike standard filters on the market, the Ultimate Star Filter® has been designed from A to Z:

  • A unique composite internal structure, combining several high-end filtration technologies.
  • Superior quality activated carbon specially selected to maximise the adsorption of pollutants.
  • A nanofiltration membrane originally developed by NASA, capable of filtering down to extremely fine particles.
  • A patented manufacturing process that balances performance, flow rate and filter life.

➡️ This exclusive architecture makes our filter more efficient, durable and effective than a conventional carbon filter or standard filter element.

NSF® certification: an independent guarantee of performance

The NSF® mark is one of the world's most stringent certifications for water filters : it guarantees that the product has been tested in an independent laboratory and that it actually reduces the contaminants advertised, without compromising water safety.

  • In addition to the filter itself, which is NSF® certified, all essential components of the Ultimate Star Filter® are also NSF® certified, meaning they have passed rigorous testing based on internationally recognised standards.
  • NSF® certification protects you from unfounded marketing claims, as it is based on objective testing by an independent organisation.

👉 By choosing a certified filter, you are purchasing the guarantee of a reliable, effective product that complies with international standards, without having to rely solely on the manufacturer's word.

REACH compliance: enhanced safety and controlled materials

Safety is not limited to filtration efficiency: it begins with the materials themselves.

The Ultimate Star Filter® complies with European REACH standards, which means that it contains no substances of very high concern (SVHC) from the European list (247 substances at the time of testing). All materials in contact with water — plastic, silicone and adhesives — have successfully passed independent tests for the absence of BPA, phthalates and other harmful products.

✅ This ensures that your water remains pure, safe and free of unwanted substances from the very first drop.

Thorough testing and complete transparency

We don't make promises: we publish results. We have carried out extensive analyses in ISO/IEC 17025 certified laboratories (Wessling ALS certificate - SGS certificate), testing our filter on more than 3,200 litres of water, which is beyond its nominal lifespan.

  • Bacteria and viruses
  • Heavy metals
  • PFAS
  • Pesticides and hormones
  • Drug residues
  • VOCs and microplastics
  • ...and many more.

➡️ Result: scientific and transparent proof of the real effectiveness of our filter, not just marketing claims.

Sustainable and economical performance

  • Long service life: up to 6,000 litres per pair of filters (≈ 2 years for normal daily use).
  • High flow rate: 12–16 L/hour designed from the outset to maintain optimal flow even after several hundred litres have been filtered.
  • Unbeatable cost per litre: approximately €0.02 per litre filtered, much lower than most solutions (jugs, reverse osmosis or bottled water).

💡 You benefit from a stand-alone solution, without electricity or pressure, that can be used anywhere, while offering performance similar to more complex and expensive systems.

A recognised customer experience

Tens of thousands of users in Europe have already placed their trust in us for many years to filter their water on a daily basis, while benefiting from responsive customer service that is available and attentive to their needs.

The Ultimate Star Filter® STORY

The Ultimate Star Filter® STORY

Our company has been selling gravity-fed water filtration systems throughout Europe for many years. We've sold systems from leading brands, and we're proud to have a base of tens of thousands of happy, satisfied customers.

However, over the years, we have come up with a number of potential improvements to these filters, to make them more efficient and safer. As we were unable to make these modifications to filters that we did not manufacture, we decided to design and manufacture our own filters. We based our work on our own knowledge, taking into account all the experience we've gained over the years in marketing, maintaining and solving problems.

The Ultimate Star Filter® DESIGN

The Ultimate Star Filter® DESIGN

The design of our water filter took over a year, and involved a great deal of consultation and testing. We contacted filtration specialists to gather usable data on existing materials, on the technical aspects of manufacturing, and on how to conduct tests and analyses.

On this basis, we came up with a filter that would outperform existing filters in removing pollutants from water, would be made from safe, tested materials and would comply with European regulations. Then, to ensure and prove its effectiveness, we carried out in-depth analyses, in compliance with current standards and carried out in competent laboratories. Finally, we wanted to obtain NSF® certification, so that there could be no doubt about its value.

The Ultimate Star Filter® MANUFACTURING

The Ultimate Star Filter® MANUFACTURING

Originally, we planned to manufacture this filter in France or Europe. We contacted various manufacturers, but without success. As time went by, we came to the conclusion that unfortunately no company in Europe was capable of manufacturing our filter.

Disappointed, but determined to see this adventure through to the end, we got in touch with Asian manufacturers. Although it wasn't our initial project, after lengthy consultations we found the ideal industrial partner with the skills, motivation and technical resources to make our project a reality. The Star Water Filter® adventure was about to begin.

The filter is manufactured in Asia, under French supervision, by a competent, responsive manufacturer with whom we have established a real relationship of trust.

Our Ultimate Star Filter® water filter is one of the most demanding solutions available

Reliability & performance of the Ultimate Star Filter®
NSF® Certification of the Ultimate Star Filter®
Manufacturing quality of the Ultimate Star Filter®
Euopean compliance of the Ultimate Star Filter®

We're proud to bring you the ultimate in filtration with Ultimate Star Filter®!