Rainwater UV Water Treatment

Rainwater harvesting is a sustainable and cost-effective option for environmentally-conscious businesses and households. UV Guard provides certified rainwater UV filter system solutions that deliver safe, great-tasting water from tanks and collection systems. Using a UV filter for rainwater tank is a chemical-free, sustainable solution for homes, businesses, and remote properties not connected to town water.

Safe and Effective UV Filters for Rainwater Tanks

Harvested rainwater often carries harmful microorganisms such as Giardia, Cryptosporidium, and E. coli, introduced through roof run-off or animal droppings. A rainwater UV filter system offers the final layer of protection in your water treatment setup, inactivating bacteria, viruses, and protozoa to meet drinking water safety standards.

UV Guard systems work best when paired with pre-filtration, such as sediment or carbon filters, to remove dirt and organic matter before the UV stage. Once treated, the water is safe for drinking, showering, cooking, cleaning, pool top-up, and equipment wash-down.

Our product range includes UV systems ideal for rainwater use, including the Guardian, CWP Series, and CWP LED. Each model is designed for an effective rainwater filtration system for drinking water in both residential and commercial settings.

Learn more about our commercial water treatment systems, residential water treatment, or explore all UV disinfection system applications.

Applications for Rainwater UV Water Treatment

  • Protect your family by providing safe drinking water from your rainwater tanks using a reliable rainwater UV filter system.
  • Ensure your rainwater filtration system for drinking water meets necessary health and safety standards.
  • Deliver chemical-free disinfection for homes, schools, and rural properties.
  • Safeguard water used for bathing, showering, and food preparation.
  • Reduce your reliance on expensive town water connections for off-grid sites.

Related Products

  • ABW-Series-product-image

    ABW-Series™

    Commercial

    Automatic backwashing screen water filters.

  • A stainless steel UV water purification system with a control panel connected by cables; both components are branded with the UV Guard logo and purple highlights.

    Armour

    Commercial

    Versatile UV water disinfection for moderate-flow Industrial and Commercial applications.

  • A stainless steel UV water disinfection system with a control panel in the background, featuring purple fittings and the UV Guard logo on the side.

    Armour X

    Commercial

    Compact UV disinfection for large-flow Commercial and Industrial applications.

  • Two blue water filter housings are mounted vertically on a black panel, with a similar unit lying horizontally in front. Attached electronic components and white tubing connect various parts of the filtration system.

    CWP LED™

    Residential

    UV Guard’s CWP LED™ offers a compact, all-in-one solution for delivering safe, clean, and great-tasting water. 

  • CWP-Series-product

    CWP-Series™

    Residential

    Complete water purification solution in one compact, weather-resistant unit.

  • GMP-Series Model GMP-3

    Guardian™

    Commercial

    Integrated water treatment solutions combining filtration and UV disinfection.

  • HWC-Series-Residential-product

    HWC-Series™

    Residential

    The sustainable alternative for softer water in residential applications.

  • HWC-Series-Commercial-product-image

    HWC-Series™

    Commercial

    The sustainable alternative to conventional water softening treatment.

  • LED-Series-residential-product-image

    LED-Series™

    Residential

    Innovative chemical-free UV water disinfection systems utilising LED technology.

  • LED-Series-product

    LED-Series™

    Commercial

    Innovative chemical-free UV water disinfection systems utilising LED technology.

  • S-Series-new-product-image

    S-Series™

    Commercial

    Versatile UV water disinfection for moderate-flow Industrial and Commercial applications.

  • SLT-Series-new-product

    SLT-Series™

    Residential

    Cost-effective UV disinfection for residential applications, indoors or outdoors.

  • T-Series-product-image

    T-Series™

    Commercial & Residential

    Flexible UV disinfection solutions for storage tanks of any size.

  • C-Series-product-image

    VR C-Series™

    Commercial

    The VR C-Series has been third party validated and certified by the NIPH (Norwegian Institute of Public Health) to the CEN EN 14897:2006 code.

  • V-Series-product

    VR V-Series™

    Commercial

    The VR V-Series has been developed to ascertainably reliably disinfect water with a transmittance between 80% and 99%.

  • WF Series Product

    WF-Series™

    Comprehensive range of cartridge and bag water filter systems.

Case Studies

See how UV Guard rainwater filtration systems are providing safe, sustainable water solutions across Australia.

  • case-study-featured-image_coca-cola

    Coca Cola – Sugar syrup (liquid sugar) UV treatment

    Coca Cola is a major manufacturer of beverages including soft drinks, bottled water, sports drinks and fruit juices. Coca Cola in Richlands Queensland was installing a new production line which required Ultraviolet (UV) disinfection for the sugar syrup application. The UV system on the existing production line also required an upgrade.

  • case-study-featured-image_spring-water

    Spring water bottling plant UV treatment

    Nu-Pure Beverages are a 100% Australian owned business who produce bottled spring water and other beverages. Their spring water is sourced from specially selected pristine Australian springs, pure with a natural balance of minerals.

  • Tropical-Ice

    Tropical Ice – process water UV disinfection for ice manufacturing

    Tropical Ice are an ice producer who supply over 110 tonnes of ice to their customers each day. Tropical Ice is one of the largest producers of high quality, food-grade ice in Australia. The water they use must meet all required Australian health regulations.

  • Case Study Veolia wastewater

    Veolia Validated UV disinfection for wastewater treatment plant

    The construction of the 450 hectare Bingara Gorge community which included an 18-hole golf course required a Recycled Water Treatment Plant as it is a residential development located outside the normal wastewater network serviced by Sydney Water. Our customer Veolia was approached to build the project.

Frequently Asked Questions (FAQ)

Find answers to common questions about UV rainwater filtration below.

A rainwater UV filter system uses powerful UV light to inactivate the DNA of bacteria, viruses, and protozoa. This renders them harmless and incapable of reproducing, which is how we ensure the water is microbiologically safe for you to drink.

Yes, you do. Pre-filtration removes sediment and debris that can block UV light from reaching the pathogens. It is a necessary step to ensure your UV filter for rainwater tank operates at maximum effectiveness.

UV disinfection only targets microorganisms. It does not remove chemicals, sediment, or alter taste. A carbon filter must be installed as part of the rainwater filtration system for drinking water to improve taste and remove odours or chemicals.

UV is highly effective against waterborne pathogens commonly found in rainwater, including E. coli, Giardia, Cryptosporidium, Salmonella, and most bacteria and viruses.

UV lamps should typically be replaced every 12 months, regardless of how often they are used, because the lamp’s UV output intensity degrades over time, reducing its ability to provide safe disinfection.

Yes. UV systems require only electrical power and offer a simple, dependable, and chemical-free method to treat water, making them ideal for off-grid and rural properties.

Maintenance is simple: annual replacement of the UV lamp and periodic cleaning of the quartz sleeve to maintain optimal performance. Cartridge filters, if used, also require regular replacement.

Get in touch

Contact our team to find the right UV filter for rainwater tank solution for your rainwater tank or drinking water system.

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