HW Uvidis®

HW Uvidis® is an advanced UV-C system for sustainable water purification. It disinfects drinking water directly at the source by effectively eliminating harmful bio-organisms. As a result, the formation of biofilm in pipes is significantly reduced, lowering the risk of colonization by legionella in the water installation.

The premium gatekeeper for the prevention of Legionella

HW Uvidis® is a water treatment system based on UV-C technology, consisting of a water treatment unit and a control cabinet. The point-of-entry system is installed directly behind the water meter of the drinking water installation. By exposing the incoming mains water to ultraviolet light, (Legionella) bacteria and other microorganisms are immediately killed at the entry point. This significantly reduces the risk of legionella colonizing the downstream water installation.

What is it?

Advanced UV-C technology for sustainable water purification
Disinfects drinking water at the source by killing bio-organisms
Prevents or limits the formation of biofilm in the pipes
Reduces the risk of legionella colonizing the water installation
Harmless to humans, animals, and the environment
Offers the possibility to lower the hot water temperature
Compliant with strict (drinking) water regulations

Why Holland Water?

High-quality and reliable system | up to 10 years warranty
Redundantly designed for uninterrupted water monitoring
Digital monitoring of system, water flow and consumption
User-friendly, low maintenance and energy efficient
Low-pressure lamps with long lifespan and high UV-C efficiency
Fixed maintenance and consumption price per quarter

How does UV‑C work?

Through exposure to ultraviolet light, (legionella) bacteria and other microorganisms in the incoming mains water are immediately killed at the entry point. This significantly reduces the risk of legionella colonizing the downstream water installation.

UV-C breaks down the DNA of microorganisms and thus destroys their genetic properties, preventing the organisms from reproducing and causing them to die off. This limits the growth of biofilm in the water installation, thereby depriving, among others, the legionella bacteria of the main breeding ground for (large-scale) colonization.

Moreover, ultraviolet light does not alter the composition of the water, has no effect on the color, odor, or taste of the water, and is free from chemicals.

More about UV-C

In which situations can HW Uvidis be used?

Our UV-C system HW Uvidis can be used in the Netherlands for preventive management purposes in both priority and duty of care buildings.

HW Uvidis has been developed in accordance with the BRL K14010/01 guideline for physical techniques.

What is the difference between UV and UV‑C?

Ultraviolet (UV) light is a form of electromagnetic radiation that lies outside the visible light spectrum. It is divided into three categories: UV‑A, UV‑B and UV‑C, based on wavelength.

UV‑C is specifically used for water disinfection because it effectively inactivates microorganisms such as Legionella. UV‑C radiation disrupts the DNA of bacteria, preventing them from multiplying and thereby reducing the risk of contamination in drinking water systems.

Frequently Asked Questions

Questions about HW Uvidis?

You can find the answers to frequently asked questions about HW Uvidis here. Can't find your question? Please contact us.

Effective prevention method

HW Uvidis® treats the incoming drinking water by exposing 100% of the flow to ultraviolet light. The system contains UV-C lamps that – under the control of the HW Tech Control unit – are intelligently managed to optimize lifespan and reliability.

The technology can also be used as a UV-C system at a shower (point-of-use), for example in office buildings or industrial complexes where only a few misting outlets are present. Read more about our HW LifeShower®.

Discover HW LifeShower®

Our cases

In practice