Because in filtration, the difference lies less in promises than in the method: coherent design, controlled flow rate, and results measured over time — available for review.
Gravity • no electricity 
Independent testing 
NSF® certification 
REACH compliance 
Star Water Filter® follows a simple approach: measure, document, publish. Evidence does not replace understanding — it enables comparison.
Measuring at multiple stages reveals stability, not an “instantaneous” result. Full results — tested volumes, conditions and performance — are available on the laboratory analysis page.
The goal is not to stack “promises,” but to build an architecture compatible with gravity: complementary layers, controlled flow rate, and stable operation.
Independent laboratory tests at multiple stages to observe evolution over time.
A flow rate suited to daily use, designed for gravity and stable operation.
NSF® sets normative requirements. REACH validates material compliance under European regulations.
A number only makes sense with its context (filtered volume, stage, laboratory).
Gravity filtration offers a balanced compromise between autonomy, ease of use, and control of the method. The goal is not to oppose systems, but to identify the one that matches your needs.
| Solution | Principle | Typical constraints | Use |
|---|---|---|---|
| Filter pitcher | Carbon / short contact | Limited contact time, frequent cartridge replacement | Portable, occasional |
| Faucet filter | Network pressure | Variable flow rate, depends on installation | Kitchen, instant flow |
| Reverse osmosis | Fine membrane | Installation, wastewater, maintenance | Technical, demanding use |
| Star Water Filter® gravity | Gravity + multilayer filtration | No installation, autonomous, documented method | Daily, family, long-term |
A filter is judged over time. This also allows a simple criterion to be estimated: the cost per liter over the recommended usage period (to be calculated based on your actual prices).
Order-of-magnitude comparison (household use). Actual cost varies depending on equipment, maintenance and consumption.
Like any filtration system, regular maintenance is necessary. The goal is to preserve flow rate, filtration quality, and safe operation.
A lasting decision is made with clear information, accessible evidence, and a framework of trust.
Delivery: free to pickup points in Europe • home/express options available
Payment: 4× interest-free via PayPal • secure payment
Satisfaction: 30 days • money-back guarantee
Customer service: documentation • installation/maintenance assistance
* Complete analyses, standards and official documents are available on the dedicated pages.
