Processing Magazine

Puralytics’ water purifier technology first-ever to exceed EPA requirements without power or chemicals

January 9, 2012

BEAVERTON, Ore. – Puralytics, a developer of photochemical water purification products using light-activated nanotechnology, today announced that its SolarBag 3-liter water purifier is the first non-powered, non-chemical system to ever exceed U.S. Environmental Protection Agency’s (EPA) requirements for water purification products.

“Surpassing the EPA’s stringent standards for water purifiers – and being the first to do so without any power or chemicals – further validates Puralytics’ promising technology and our mission to deliver practical, affordable solutions to increase the world’s access to fresh, drinkable water,” said Mark Owen, founder and CEO of Puralytics.

The portable product is targeted at recreational, emergency preparedness and developing world applications. It is in use in a variety of countries and has drawn significant interest from human health organizations and NGOs.

The SolarBag – a portable, reusable, purification system tapping the power of sunlight and nanotechnology to treat contaminants in water – outdid each of the EPA’s Guide Standard and Protocol for Testing Microbiological Water Purifiers requirements, which state that legitimate water purification methods must destroy 99.9999% of bacteria, 99.99% of viruses and 99.9% of protozoa.

The SolarBag exceeded these EPA standards – accomplished by very few other commercially available water purifiers – without requiring any battery power, additive chemicals, pumping or cleaning of filters or membranes. The SolarBag also treats other contaminants not addressed by existing technologies on the market, such as pesticides, petrochemicals, heavy metals and pharmaceuticals.

The tests were conducted at the University of Arizona’s Department of Soil, Water and Environmental Science, and included purifying challenge water with high turbidity, color and chemical content representing “worst case” water. The samples were spiked with bacteria, virus and protozoa as specified in the protocols. Specifically, Raoultella terrigena, an enteric bacteria; two representative viruses - poliovirus and rotavirus; and protozoa Cryptosporidium parvum were used because of their resistance to disinfectants, filtration and ultraviolet light. The tests were replicated and completed over a period of several months and in different environmental conditions.

The SolarBag, which is BPA free and can be used hundreds of times, provides about 3 litres of pure drinking water in 2 to 4 hours of exposure on a clear or cloudy day.

“The global supply of clean potable water is diminishing every day, creating serious health problems and economic challenges around the world,” said Owen. “Innovative solutions like the SolarBag will be an important part of the equation as our society continues to revaluate how to manage our world’s natural resources throughout the future.”

Puralytics currently has one other product on the market, the Shield 500 – a complete, low-cost purification system – which treats well water, industrial and laboratory water using LEDs, advanced optics and nanotechnology, treating up to 500 gallons of water per day.

The ability to remove all types of bacteria, chemicals and harmful pollutants from fresh water has earned Puralytics early recognition as a pioneer in the water purification industry. Puralytics’ patent-pending, light-activated nanotechnology water purifiers have won numerous awards over the last year, including National Grand Prize at the Cleantech Open, Global Water Intelligence “Best Investment” award, Zino Green Fund “Best Cleantech Investment,” finalist in the ImagineH2O Prize and TechCrunch awards. It was named a Top 50 water technology company by The Artemis Project and a top 100 cleantech company by the Global Cleantech 100.

For more information on Puralytics or the SolarBag, see or email