Many people know the feeling: you fill the water tank of your motorhome, campervan or boat — and after a few days the water smells strange, tastes musty or even looks cloudy. What seems harmless can be a serious health risk. In stagnant pipes and tanks, bacteria such as Legionella or coliforms multiply especially fast.
Why drinking water hygiene matters so much
In public drinking water networks, treatment is centralised and strictly monitored. As soon as water enters a private tank, hose or mobile pipe system, this control ends — and the user is responsible for their own water quality.
Did you know? In modern water systems, germs in the tank are an underestimated hazard — especially with seasonal use when the tank sits unused for weeks.
How does UV-C disinfection work?
UV-C light sits in the short-wave ultraviolet range of the light spectrum, with wavelengths between around 200 and 280 nanometres. This radiation is invisible to the naked eye — but extremely effective against microorganisms.
When water flows past the UV-C light source, the radiation penetrates directly into the cells of bacteria, viruses and fungi. There it damages the DNA and RNA of the microorganisms so severely that they can no longer reproduce and die off. This process happens in fractions of a second — without any chemical reaction, without residues and without altering the natural taste of the water.
Modern UV-C systems like the fluviSHIELD use energy-efficient LED technology instead of conventional mercury vapour lamps. LEDs start instantly without warm-up time, are shock-resistant and consume almost no power in standby.
Advantages over chlorine and co.
Stagnant tank water is traditionally treated with chlorine tablets, silver ions or special cleaning agents — each with known drawbacks:
- Chlorine — effective but significantly alters taste. Reaction products can be harmful to health with prolonged exposure.
- Silver ions — slow-acting and only partially effective against all germ types. Water often needs hours of treatment before it is fit to drink.
- Chemical cleaners — laborious to apply, require regular flushing of the system and leave residues.
- UV-C (fluviSHIELD) — instant effect, no taste change, no residues, no effort. Fully automatic whenever you draw water.
UV-C disinfection is the only method that works physically: nothing is added to the water, and the process is recognised as a safe water treatment method by authorities and health organisations worldwide.
fluviSHIELD: UV-C for mobile drinking water
The fluviSHIELD UV-C filter from PUNDMANN was developed specifically for use in mobile drinking water systems — exactly where the challenges for water quality are greatest. The device operates reliably on 12 V and 24 V DC networks: ideal for motorhomes, campervans, boats and off-road vehicles.
The system works fully automatically: as soon as you draw water, the UV-C filter activates. When no water is flowing, the device consumes just 0.1 A in standby — protecting your on-board battery even on long trips.
99.999 % disinfection rate. The fluviSHIELD eliminates viruses and bacteria through targeted UV-C irradiation so effectively that fewer than one in 100,000 germs survives — without chemicals, without chlorine, without aftertaste.
Technical specifications
Key figures for the fluviSHIELD:
- Input voltage: 8–36 V DC (12 V/24 V operation)
- Active current draw: 1.8 A
- Standby current draw: 0.1 A
- Max. operating pressure: 6.5 bar
- Flow rate: 8 litres / minute
- UV-C module lifespan: up to 5,000 operating hours
- Disinfection rate: up to 99.999 %
- Activation: automatic when water is drawn
Smart light band as status indicator
The fluviSHIELD's light band communicates its operating state at a glance — without a display or app:
- Slow pulsing white — Disinfection active, all good.
- Transition to purple — UV-C module approaching end of its service life.
- Fast pulsing purple — Module has reached maximum hours, replacement recommended.
- Fast pulsing red — Over-temperature (above 55 °C), thermal shutdown active.
- Flashing yellow — Undervoltage protection active (below 11.6 V).
Who is the fluviSHIELD for?
The fluviSHIELD is designed for anyone who relies on clean drinking water on the move:
Motorhome & campervan — Perfect for the stagnant tank that can quickly become a breeding ground in summer. Easy integration into existing pump systems.
Boat & yacht — Seawater and salt air place special demands. The fluviSHIELD operates reliably even in maritime environments.
Off-road & overlanding — Shock-resistant LED technology makes the system ideal for rough terrain off sealed roads.
Garden systems & tiny houses — The wide input voltage range (8–36 V) makes the device compatible with solar systems and off-grid power supplies.
Frequently asked questions
How often does the fluviSHIELD need maintenance? — The UV-C module itself is maintenance-free. The light band gives advance notice when a module change is due after around 5,000 operating hours.
Does UV-C irradiation change the taste? — No. Since nothing is added to the water, the natural taste is fully preserved.
Does it work with a solar system or LiFePO4 battery? — Yes. The input voltage range of 8–36 V DC makes it compatible with virtually all common 12 V and 24 V systems.
What happens if there are suspended particles in the water? — It is recommended to combine the fluviSHIELD with an upstream mechanical pre-filter if the source water is turbid.
Conclusion: Install once, stay safe forever
UV-C water disinfection is the cleanest, most effective and most convenient method for keeping drinking water hygienic in mobile systems. The fluviSHIELD from PUNDMANN brings this technology in a compact, robust and intelligent solution directly into your motorhome, boat or camper.
No topping up chemicals, no waiting, no aftertaste — just clean, germ-free drinking water exactly when you need it. Available now at www.pundmann.de.