SnowPure Water Technologies

SnowPure Water Technologies

SnowPure manufactures and supplies ultrapure water and process membrane components, to be integrated by qualified OEMs in over 70 countries around the world. With detailed knowledge of the water and process industries, SnowPure works with our OEMs ensuring design optimization and best system performance. We are an independent manufacturer of EDI electrodeionization modules. Our technical expertise helps guide our clients before, during, and after the sale.

Company details

130-A Calle Iglesia , San Clemente , CA 92672 USA
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Business Type:
Industry Type:
Water Treatment
Market Focus:
Globally (various continents)
Year Founded:
1,000,000 - 10,000,000 €

Since we began in 1979 SnowPure focuses on one thing: providing innovative water technologies and products. These products include Electropure™ EDI electrodeionization, Zapwater™ laboratory EDI, Excellion™ ion-exchange membranes, innovative ultraviolet (UV) devices, ED, GTM, DC power supplies, and components for pure water systems.

Harry O’Hare (HOH) founded the company as an innovator of electronic water products (inventor of electrodeionization) serving the pure water market. Today we continue his vision as an independent, private company. We sell our products to Pure Water System Integrators (OEMs) around the world. SnowPure continues to develop and supply membrane devices for its customers, who in turn sell full systems for a common success.

“SnowPure does not compete with our Customers”

It is important to SnowPure to provide our OEMs comprehensive training and technical support. Both at the beginning of our relationship and into the future as we add new products and technologies. We offer our customers marketing support with educational and promotional materials, and unparalleled customer service.

Global Reach

SnowPure sells its products in over 70 countries worldwide, and has established global sales offices, distributors, and service centers:

  • SnowPure Water Technologies (Worldwide HQ (Headquarters))
  • Hong Kong (SnowPure International)
  • China Sales Office
  • Middle East Sales Office
  • Asia Distributors
    • India
    • Japan
    • Korea
  • Europe Distributors
    • Germany
    • Sweden, Finland, Norway, Nordics
    • Switzerland, Austria, Czech Republic, Slovakia
    • Ukraine, Baltics

Innovative Products

Our Electropure™ and Zapwater™ EDI electrodeionization products are installed in ultrapure water systems worldwide in many applications including pharmaceutical, power generation, industrial, and laboratory environments.

In addition to EDI, we provide other ultrapure water products including: IXM (ion-exchange membranes), UV (ultraviolet), ED (electrodialysis), RO (high silica rejection membranes), and GTM (gas-transfer membrane) products.


For a detailed history of EDI technology and Electropure EDI, please visit SnowPure's HISTORY page.

It started with a prototype

In 1977, Harry O’Hare began experimenting with electrodeionization (filled-cell ED) and created the first working EDI prototype. Prototype testing was done at Southern Research Institute (SRI). This ground-breaking work led to the founding of HOH Water Technology, Inc. in 1979. HOH applied for the first electrodeionization patents in 1981, which were issued in 1984, preceding the Millipore/Ionpure patents by two years. During the product development years of 1981-1989 a wide variety of EDI prototypes were designed and tested, including cylindrical EDI in a pressure vessel. With its new technology launched, the company went public in 1987.

Electropure was born

In 1996, HOH changed its name to Electropure and began aggressively marketed the EPM product line which became popular with a number of the “early adopters” in the pure water industry. Electropure licensed its electrodeionization technology to Glegg Water in 1994, enabling Robert Glegg to develop E-Cell®, now Suez Water’s EDI technology.

Continued innovation

In 1998 Electropure finished development and patented its Excellion ion exchange membranes and process, which enabled the XL product line to be developed in 1999.

The next step

2004 marked the introduction of the Electropure XL-HTS (High Temperature Stable) electrodeionization product line. SnowPure’s product line expanded again in 2005 with the introduction of Zapwater EDI for laboratories. SnowPure, a private corporation, was formed in 2005 and via a management buyout acquired Electropure’s EDI division. In 2006, SnowPure embarked on an aggressive expansion in China, opening up its sales office in Shanghai.

Celebrating our past, building our future

In 2007, SnowPure launched the XL-R industrial EDI product line. SnowPure International was formed in Hong Kong in 2008. The next year was highlighted by the addition of a revolutionary low-energy, compact UV product to the SnowPure line. In 2011, SnowPure launched the EXL EDI series worldwide and opened a global production and logistics facility in China.

We are actively working to add technologies that make electrodeionization work better, for example for hemodialysis water, and reducing silica further for semiconductor and power generation. An example is the new ExcellPure RO, the highest silica rejection membrane available.

SnowPure continues to create new innovations while expanding its world market presence in the pure water industry.


SnowPure is a global leader in high-technology water products. Selling Electropure™ EDI modules to qualified OEMs and pure water system integrators. Ultrapure water products include ion-exchange membrane, DC power supplies, flow switches, instrumentation for high purity systems, and innovative ultraviolet (UV) products.

Because SnowPure only sells the components for ultrapure water systems, and not the systems themselves, we do not compete with the OEMs we serve. We provide free onsite EDI training for our customers covering all aspects of EDI, ranging from fundamental principles and system design considerations to hands-on operation. Completing this training is the first step in becoming a Qualified SnowPure OEM customer.

SnowPure develops, manufactures, and sells advanced water purification technology products for high-purity water systems. Founded in 1979, we support system integrators in over 40 countries by providing training, support, and pure water high-technology products including EDI, UV and GTM. Our products are primarily used power generation, pharmaceutical, medical and laboratory applications.

SnowPure has developed a number of special modules for custom applications. These include:

  • Removal of chloride from recycled antifreeze
  • Recycling of plating rinsewater for reuse
  • Concentration of trace metals for recovery
  • Conversion of organic salts to their organic acids (conversion of sodium acetate to acetic acid)
  • Conversion of inorganic salts to acid streams and base streams