UV-LED: A Powerful Low-Power Solution

Across Canada, dozens of First Nations communities are under drinking water advisories. Whether water quality is unknown or confirmed not safe to consume (due to poor filtration or equipment failure, for example), these populations are at risk of exposure, contamination, and illness.

Many First Nations and remote communities also have limited access to power and maintenance resources, and rely on diesel generators to supply electricity; this makes water purification solutions like reverse osmosis or UV lamps problematic, as both have significant power requirements. UV-LED water purification, however, operates on little power, requires minimal maintenance, and is proven to have a long product lifespan.

To confirm UV-LED as a viable, effective solution for off-grid water disinfection, we travelled to Ontario, Canada and carried out microbial tests with an EPA-certified third party on pond water adjacent to Grand River and Laurel Creek. Both bodies of water supply drinking water to rural and urban communities, and are known to be heavily contaminated with Total and Fecal Coliform, a bacteria found in most natural water sources that indicates the possible presence of microbial pathogens.

Using a basic filter, 12V battery, and water pump, we tested untreated water against three flow rates to evaluate our water purification systems’ ability to eliminate coliform bacteria. As shown below, pond water can be passed through an Acuva system at a low to medium flow rate, and potable water can be processed twice as fast and meet NSF purification standards. Further, complete TC inactivation and elimination of other microbial contaminants is feasible at a UVT lower than 95% of most water treatment systems.

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Our vision at Acuva is to make safe drinking water accessible to communities around the world, finding new ways to reach new markets. We continue to explore applications and improvements for our proprietary technology, reducing form factor and increasing disinfection capabilities.

Read the full case study here.