UV Disinfection of water

UV light damages the DNA in bacteria, viruses, moulds and some protozoa, leaving them unable to perform cellular functions and multiply. UV is particularly highly effective against Cryptosporidium and Giardia – organisms resistant to chlorine that are a major risk to human health. UV-C rays penetrate microorganisms and destroy their ability to reproduce, effectively rendering them harmless. It’s a simple but effective process, destroying a minimum of 99.99% of harmful microorganisms, including E. coli, Cryptosporidium, and Giardia. Not only is it safe and highly effective, UV does not change the taste, colour, or odour of water. It simply removes the risk of illness caused by microbial contamination, making water safe.  UV light is generated by flowing electrons from an electrical source through ionised mercury vapor. Mercury is contained within a UV lamp and, for safety reasons, is isolated from exposure to water by the lamp envelope and the surrounding lamp sleeves.

The exact wavelengths emitted depend on the vacuum pressure within the lamp tube itself. Low pressure (LP) UV lamps are evacuated to relatively ‘low’ pressures (between 1-10 Pa) and emit UV-C light at a single wavelength of approximately 254nm. Medium pressure (MP) lamps are evacuated at a ‘medium’ pressure and emit a broader spectrum of UV light, with higher intensities between around 254 – 265nm

Low pressure and so called ‘Amalgam’ lamps are twice as efficient at converting electrical energy into UV-C light compared to medium pressure lamps. However, medium pressure lamps emit far more UV-C energy per unit length over a wider wavelength than low pressure or amalgam lamps. Various considerations therefore need to be taken into account when choosing which of these lamps is suitable for a given application.

We offer a variety of UV disinfection systems including low and medium pressure UV  Disinfection Units.  Our budget UV disinfection are ideally suited for residential RO purifications systems, or whole house filtration systems including rain water filtration.

The Sterilight® Platinum™ “SP” series feature UV intensity monitoring and flow pacing for optimised operating efficiency. They cover a range of flow rates up to 220 litres per minute depending on the specific dose required.  Our Sterilight SPV systems have undergone validation with NSF and hold certification to deliver an accepted dose of 40 mJ/cm2 .UV-C rays .Applications include private bores, camping grounds, hotels, boats, bottlers, aquaculture, hospitals, food, cottages, restaurants, breweries, water systems, laboratories, marine, pharmaceutical, dairies and many other applications requiring UV monitored disinfection. A total of eight systems are available and cover point-of‐ use or high‐flow point of-entry applications.

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    Combined Filtration and UV disinfection Systems

    We offer combined filtration and UV systems  with  a choice of different sizes pre-filters , 20 micron washable pleated sediment filter, 5 micron anti-bacterial carbon block taste and odour filter, 316 grade stainless steel reactor and different capacities UV lamps to suit your flow requirements.
    The system is  preassembled onto a powder coated steel bracket.  

    Comes standard with indoor controller. For outdoor controller and other accessory options please contact us,


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    The new Sterilight Platinum "SPV" series carry NSF/ANSI Standard 55, Class A certification. Flow rates from 1.5 to 20 gpm cover a wide range of applications from point-of-use (POU) disinfection to high-flow point-of-entry (POE).

    These validated systems carry a 40 mJ/cm2 UV dose at the alarm set-point as dictated by NSF/ANSI Standard 55 test protocol. Systems offer a 4-log reduction (99.99%) in bacteria, virus and protozoan cysts (Giardia lamblia and Cryptosporidium).

    Applications include private wells, camp grounds, hotels, bottlers, aquaculture, hospitals, food, cottages, restaurants, breweries, water systems, laboratories, marine, pharmaceutical, dairies and many other applications.images (2)

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     High output, hard glass UV lamps with quarts sleeves for maximum efficiency. Replacement lamps for UV -units 1 to 24 GPM.

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    4 to 90 litres/min  Heavy duty stainless steel 304 pressure vessel. Heavy duty quartz sleeve. High output, hard glass UV lamps for maximum efficiency. CE ballast with lamp failure indicator.

    Disinfection should be considered a minimum level of treatment for those relying on private water supplies for their potable water needs. . Ultraviolet (UV) technology is one of the most effective, convenient and affordable whole-house solutions for effective disinfection.