Water Purifier Becomes First to Exceed EPA Requirements Without Power or Chemicals

Puralytics’ SolarBag treats contaminants in water using sunlight, nanotechnology

Puralytics announced that its SolarBag 3-liter water purifier is the first non-powered, non-chemical system to 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’ technology and our mission to deliver practical, affordable solutions to increase the world’s access to fresh, drinkable water,” said Puralytics founder and CEO Mark Owen.

The SolarBag is a portable and reusable purification system that uses sunlight and nanotechnology to treat contaminants in water and is targeted at recreational, emergency preparedness and developing world applications. The system provides about 3 liters of drinking water in 2 to 4 hours of exposure on a clear or cloudy day. It is used in a variety of countries and has drawn significant interest from human health organizations and non-governmental organizations.

EPA’s “Guide Standard and Protocol for Testing Microbiological Water Purifiers” requirements state that legitimate water purification methods must destroy 99.9999% of bacteria, 99.99% of viruses and 99.9% of protozoa.

The tests were conducted at the University of Arizona’s Department of Soil, Water and Environmental Science, and included purifying water with high turbidity, color and chemical content representing “worst case” water. The samples were spiked with bacteria, viruses and protozoa as specified in the protocols. The tests were replicated and completed over a period of several months and in different environmental conditions.


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