Water filter against legionella and bacterial infestation in drinking water systems

Acquaspar offers an innovative, self-cleaning ultrafiltration-based Legionella filter—a highly effective solution for microbiological drinking water purification, entirely free of chemicals. Our advanced membrane filtration technology reliably removes Legionella, E. coli, Pseudomonas, parasites, viruses, and other microorganisms larger than 0.03 µm, with a retention rate of nearly 100%. The Acquaspar ultrafiltration system is a trusted hygiene standard in demanding environments. The filtration process is purely mechanical: untreated water flows through a high-performance porous membrane that physically blocks pathogens and particles. An integrated rinsing function allows the system to self-clean automatically, discharging the rinse water directly into the drain. Maintenance is minimal. Flexible applications for the Acquaspar UF filter:
  • Installed at the cold water inlet
  • In hot water systems – e.g. after the boiler
  • Directly at the point of use (shower, sink, bathtub)
This technology also proves reliable in thermal spas, air treatment systems, dental chairs, and birthing tubs. Many medical and commercial facilities already rely on this chemical-free hygiene solution. Our clients include hospitals, nursing homes, hotels, sports facilities, laboratories, dentists, and numerous public institutions—all trusting Acquaspar as their expert in safe, hygienic drinking water. Acquaspar – your reliable partner in Legionella prevention with state-of-the-art ultrafiltration technology.
Self cleaning legionella filter warm water

Diagram: Ultrafiltration in the hot water circuit

Selfcleaning legionella filter - Ultrafiltration scheme

Schematic representation of the ultrafiltration process

Schematic representation of selfcleaning legionella filter - ultrafiltration

The membrane filter – legionella filter from Acquaspar offers reliable protection against bacteria, viruses and organic contaminants – a safe solution for drinking water hygiene in sensitive areas.

When installed in the hot water circuit – e.g. directly after the thermostatic valve in the boiler room – legionella, bacteria and turbidity only enter the system for a single circulation round. They are then filtered out mechanically and without chemicals.

The integrated self-cleaning function reduces sediment formation in the pipe system and thus actively inhibits biofilm formation. This also suppresses the proliferation of legionella in the long term.

Another plus point: the natural water quality is completely preserved. The filter does not remove any dissolved minerals, metals or limescale – the taste of the drinking water remains fresh.

With this technology, Acquaspar focuses on maximum water safety, resource conservation and sustainable hygiene – both for private households and for medical and commercial facilities with high hygiene standards.

Advantages of the Acquaspar Legionella filter:

  • Effective ultrafiltration for clean and safe water
  • Self-cleaning thanks to automatic backwash
  • Protection against legionella, bacteria & germs
  • Without chemicals – environmentally friendly & sustainable
  • Simple integration into existing water pipes
  • Ideal for medical facilities, hotels, schools & industry

How ultrafiltration works

Why you should choose Acquaspar?

With many years of experience in water treatment, Acquaspar is your reliable partner for customized and innovative solutions. Our goal: sustainable water quality and maximum safety for people and systems.

CERTIFIED QUALITY