swimming pool spa water treatment by uv-c ultraviolet disinfection BIO-UV Group

Ultraviolet (UV-C) pool water treatment system

The best pool cleaner solution for a safer pool


For years now, the most common way to treat the swimming pools and spas has been using chemicals such as chlorine. Yet, those swimming pool chemicals are endangering the human health.

Chlorine water treatment for instance, irritate the skin and the eyes and could even cause burns and severe derma irritations while there’s a high pool chlorine level. It also has been pointed out that pool chlorine or chemicals are more likely to expose people to allergies and asthma.



There are 3 different categories of ultraviolet rays and the UV-C rays’ category are germicidal. While the UV-C radiation process, the ultraviolet rays penetrate the DNA of the irradiated microorganisms. The UV-C photons disturb the DNA and the microorganisms die.

(Learn more about the UV-C disinfection)



The BIO-UV ultraviolet water treatment system for swimming pools and spas is both very simple and highly efficient and safe. For the record, the pool UV system is based on the same technology and process than the ultraviolet treatment for drinking water.

The water goes into the UV reactor that contains the UV-C lamp and is disinfected under the ultraviolet radiation effect. There are different sizes of reactors as they are specifically designed to fit all kind of pool or spa installations. 

BIO-UV's ranges of pool and spa UV system

The ultraviolet reactor and the dosing pump are both fitted to the pool water treatment circuit in order to enhance the efficiency of the water disinfection. The pool UV system may also feature (optional) an automatic pH control providing a complete swimming pool UV-C treatment.
For more compact and easier-to-use pool UV disinfection system, BIO-UV provide also an 2-in-1 automated system: the BIO-UV Combipool combining both dosing pump and pH control. 


Automatic chlorine-free solution for pools and spas

During the filtering cycle, water is circulating inside the BIO-UV water treatment system. It features a reactor where a UV-C lamp is located to ensure the disinfection process.

Bacteria, viruses and algae are subjected to the UV-C chlorine-free treatment: UV-C lamp radiation are destroying them, without causing any side effects or creating any harmful by-products.

bio-uv pool system installation diagram

BIO-UV guarantees continuous disinfection in the pool or spa between 2 filtering cycles by combining the UV-C treatment with an automatic injection of the disinfecting product (BIO-UV residual oxygen, exclusive formula) and pH control. It is a self-operating system that does not require any intervention.

The water is disinfected and disinfecting, to prevent the appearance of algae and avoid excess dosing.

The automatic UV pool and spa system designed by BIO-UV adjust and regulate itself to ensure a perfect water disinfection according to these 3 parameters:

  • pool volume
  • water temperature
  • water pH


The BIO-UV Combipool is an automatic 2-in-1 system that injects the disinfecting product and controls pH. It features in a single one device both dosing pump and pH control. The Combipool offers a 4-in-1 muff which combines probes and injection pipes.

BIO-UV Combipool for product injection and pH control

Main benefits of the BIO-UV Combipool:

  • Easy-to-use: it enables to adjust the disinfection product injection (BIO-UV active oxygen…) and the pH regulation without any manipulation.
  • Easy-to-install: all the essential accessories are furnished with the unit. COMBIPOOL can be easily integrated to any filtration circuit
  • Safety: thanks to proportional pH regulation, Combipool holds a precise assigned threshold and avoids overdoses

Technical specifications:

  • For 150 m3 max pond volume
  • Measuring pump exit : 2,4L/h
  • Power : 10 W max
  • Exit pressure : 1 Bar
  • 4-in-1 muff which combines injection pipes and probes


It automatically injects a small daily dose of disinfecting, algicidal, anti-scale swimming pool product: BIO-UV residual oxygen, exclusive formula.

This comprehensive process combines the action of UV-C and residual oxygen to disinfect water and make it disinfecting, for the greater comfort of bathers. Even in stormy weather, your pool water will not change! The water remains beautiful and stable.

bio-uv tempo pool and spa dosing pump

Main benefits of the BIO-UV Tempo pool dosing pump:

  • Easy-to-use: automated injection of the active oxygen according to pool water's carateristics like temperature and volume. It enables to set the daily injection duration with a unique potentiometer.
  • Easy-to-install: all the essential accessories are furnished with the unit. BIO-UV Tempo can be easily integrated to any filtration circuit. The injection pipe and temperature probes are integrated into a unique paddle clamp, which is suitable to temperature probe as well as pH probe (pipes diameters: 50 or 63 mm). 
  • Smart: provides all qualities of a measuring pump but in a small size, it can be hung and unhitched unlimitedly from the paddle clamp to make the access and the adjustments easy. It includes an eco-friendly electronic card without lead or mercury 

Technical specifications:

  • Cabinet 240x190x140 mm : can be hung and unhitched unlimitedly from the paddle clamp
  • Supply : 230V/50 HZ
  • Power : 8W max
  • Protection indication : IP54
  • Measuring pump outlet : 1,4 L/hour
  • Measuring pump outlet pressure : 1,0 bar
  • Temperature Probe Entrance
  • Hight light display


BIO-UV pool and spa pH control lower the development of algae and bacteria, independently from treatment of swimming pool or spa water.

BIO-UV pool pH control

Control of the pH ensure optimum water upkeep. Skin, eyes and mucous membranes are left in peace. BIO-UV pool pH control is very easy to use and allows precise dosing. It optimizes the efficiency of the UV-C swimming pool treatment.

Calcification and cloudy or whitish water are things of the past. The swimming pool water is always crystal clear and beautiful, and the water quality is always perfect.

Main benefits of the BIO-UV pH control:

  • Very simple to use
  • Silent motor engine
  • Pre-calibrated regulation system
  • programmable pH+ and pH- 
  • Proportional regulation maintaining the required pH level
  • Easy to install, accessories are furnished
  • Compatible with all type of treatments
  • CE-certified
  • This unit is in accordance with the ROHS standard (electronic card without lead or mercury)


What are the benefits of BIO-UV pool system?

The UV-C pool water treatment system has many advantages for bathing. It guarantees healthy water, protected against any risk of contamination by micro-organisms present in the water. It is easy to use and very effective, saves you money and integrates perfectly into an environmentally-friendly approach.

The ultraviolet (UV-C) technology mastered by BIO-UV kills 99,99% of microorganisms such as viruses, bacteria, algae, yeasts, mould and even legionella, Giardia and cryptosporidium which are not eliminated by chlorine or ozone at usual level. The pool UV system are the most efficient solution to remove chlorine off your pool or spa and no longer use a corrosive and aggressive swimming pool product.

Indeed, testing measures for our pool UV system certification are above the usual required standards. Therefore, BIO-UV’s ultraviolet pool solutions deliver an optimal efficiency level of microorganisms’ reduction, they are the warranty of clean and pure water quality that bring the most comfortable swimming experience.

More than 70,000 swimming pools and spas around the world have already installed a BIO-UV ultraviolet water treatment system to treat their water.



  • No risk of allergies or respiratory diseases caused by chlorine (asthma, etc.). The water quality guarantees healthy bathing
  • No harmful pool products: one simple natural product, BIO-UV residual oxygen, in an exclusive formula


  • Say goodbye to eye and mucous membrane irritations, dry skin and damaged hair. Water disinfection guarantees unbeatably comfortable bathing
  • No unpleasant smells in the water or air
  • No chlorine or salt: no chemical residue, no corrosion and no chlorine derivatives.


  • Healthy process, in widespread use to disinfect natural pools
  • Chlorine-free and salt-free
  • Discharged water does not pollute


  • Simple reliable materials: no electronics
  • The UV-C lamp has a long operating life (3 years for a seasonal swimming pool)
  • Non-corrosive treatment
  • No discoloring, extended operating life of installations
  • No more excessive consumption of chemical products to retrieve water quality


  • Easy and fast to install and maintain. The BIO-UV UV-C treatment for swimming pools does not require any specific adaptation works; it adapts to your water filtering system
  • Compatible with every type of covering, materials, etc.
  • There is a UV-C disinfection system for every pool, whether it is under construction or already exists
  • Continuous disinfection



The BIO-UV pool and spa solutions have been designed with the ambition of bringing peace of mind to our customer. Thus, this are most likely the easier-to-use systems of the market.
Check out our video tutorial to install or maintain the UV pool system:





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Discover our solutions
The BIO-UV range
The BIO-UV range

A range in stainless steel for private pools and spas

Advantages :

  • Automatic system without chlorine
  • Ensures a crystal-clear water
  • Automatic treatment system
  • Optimized Lamps life (13 000 hours)
  • Stainless steel 316L reactors
  • Ecological and healthy process
  • Easy and quick installation and maintenance

Technical specifications :

  • Power supply : 120/240V/50/60Hz
  • Reactor cabinet : INOX 316L
  • Ballast : electronic
  • Lamp : High Output – low pressure (13 000h)
  • Ground protection : yes
  • Lamps working warning light : yes
  • Reactor warranty : 5 years
The DELTA-UV E Series range
The DELTA-UV E Series range

A range in PVC for private pools.

After filtration, the water flows inside the E Standard Delta UV unit and gets out entirely disinfected. The full bacteria, virus and seaweeds are eradicated with no side effect and without any creation of dangerous by-product. You will still need to maintian a small residual of chemicals in your pool in order to destroy any micro-organisms that do not find their way into the UV sanitiser.
This process brings your pool a pure and healthy water.

Specifications :

  • Power supply : 120 / 240V / 50 / 60 Hz
  • Housing : PVC plastic
  • Ballast : electronic
  • Lamp : High output  -  low pressure  -  long life ( 16 000 hours)
  • Pressure gauge : YES
  • Indoor/Outdoor installation : YES
  • Limited warranty : 2 years
  • Plumbing options : 63 mm or 2'' PVC unions
The DELTA-UV EA Series range
The DELTA-UV EA Series range

A range in PVC for private spas

The EA series of DELTA UV sanitisers has been designed to work with your spa with unmatched performance.
DELTA UV provides you with water quality that is unmatched by any sanitisation system available for spas today. A one-time purchase of a UV sanitiser will lower your dependance on chemicals, which saves you money.
The maintenance limits to change a UV lamp that lasts up to 18 months (temperature 32°C, filtration 24 hrs. a day).

EA Series Specifications :

  • Power supply : 120 / 240V / 50 / 60 Hz
  • Housing : special PVC plastic
  • Housing unions : 6'' for housing disassembly to facilitate easy cleaning of the quartz tube
  • Ballast : electronic
  • Lamp : high output  -  low pressure  -  long life (13 hours)
  • Indoor/Outdoor installation : YES
  • Limited warranty : 2 years UV unit
  • 63 mm or 2'' PVC unions
  • Plumbing options : 3/4 unions


BIO-UV active oxygen
BIO-UV active oxygen

BIO-UV active oxygen is an exclusive formula.

  • Product without chlorine
  • Automatic injection from BIO-UV Tempo measuring pump or from the COMBIPOOL and in accordance with the pool volume and the water temperature
  • Injection protocol available in the BIO-UV or DELTA unit explanatory leaflet

Packaging : 10 or 20 liters can

BIO-UV Choc+
BIO-UV Choc+
  • Powerful oxidant with hydrogen peroxide
  • Bactericide
  • Virucidal
  • Algicide
  • Dosage : 1 liter / 10 m3 : to pour directly in the pool in the face of backflow and with active filtration.

Packaging : 10 liters can

BIO-UV winter treatment
BIO-UV winter treatment
  • Algicide
  • Limestone sequestering (limit the deposits)

Packaging : 5 liters can

BIO-UV Special Algicide
BIO-UV Special Algicide
  • Anti-seaweed very concentrated
  • Particularly active on seaweed wall
  • Do not forget to adjust pH between 7 and 7,4
  • Dosage : 1 liter / 10 m3

 Packaging : 5 liters can

BIO-UV pH minus
BIO-UV pH minus
  • Enables to reduce the pool water pH 
  • Must be used alone or with an automatic regulation (BIO-UV PH REGUL)
  • Dosage :

Initial pH







Minus pH (liters)







Packaging : 10 or 20 liters can


BIO-UV Filter clean
BIO-UV Filter clean
  • Cleaner
  • Descaler
  • Eradicates stains and residues in sand filters
  • Cleans in depth cartridge, sand or diatom filters
  • Must be used at least once a year, during 24 hours
  • Refer to resumption protocol for the dilution and use advices

Packaging : 5 liters can