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Copper Silver Ionization

Systemic water treatment with the best, most effective solution to kill Legionella.

LiquiTech® copper silver ionization is the most effective technology for controlling Legionella in water systems. In field evaluations, copper silver ionization has yielded the most successful results and is backed by more than 100 independent research studies.

Copper silver introduces disinfectant ions that travel throughout the plumbing infrastructure and attack Legionella living downstream, embedded in biofilm within the plumbing distribution system, providing systemic disinfection. Copper silver ionization is essential for controlling preexisting Legionella contamination.

This technology provides a controlled release of copper and silver ions into the water supply to kill harmful waterborne pathogens*. Aside from being an effective method for combating Legionella, copper silver ionization is also the most environmentally friendly solution – with no harmful disinfection by-products.


How does Copper Silver Ionization disinfection work?

Copper silver ionization is an electrolysis process which introduces positively charged copper and silver ions into the water supply as current is applied across copper and silver electrodes. The positive ions bind to the negative cell walls of bacteria, which causes the proteins in the cell wall to break down, effectively killing the cell.

Why is ionization better than other water treatment solutions?

Copper silver ionization is effective in both hot and cold water, unlike chemical technologies whose disinfectant rapidly dissipates in hot water environments, rendering them ineffective. It is state and federal EPA-registered (EPA reg. number 68250-1) technology for eradicating Legionella in drinking water. Copper silver ionization requires no chemicals and introduces no dangerous disinfection byproducts. There are no consumables that are unsafe for handling. The ions introduced into the water supply are safe for human consumption, and do not damage the plumbing infrastructure.

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* Claims against organisms other than Legionella are based on independent, peer reviewed, scientific research and have not yet been reviewed, evaluated, or approved by the EPA. Sources:

  1. Silliker Laboratories “Efficacy of a Water Purification System” November 26, 2002
  2. Liu Z, Stout JE, Tedesco L, Boldin M, Hwang C, Diven WF, Yu VL. Controlled evaluation of copper‐silver ionization in eradicating Legionella pneumophila from a hospital water distribution system. J Infect Dis 1994; 169:919‐922.
  3. Allegheny County Health Department. Approaches to Prevention and Control of Legionella Infection in Allegheny County Health Care Facilities (Second Edition). Allegheny County Health Department, Pittsburgh, PA 1997; 1‐15 ,
  4. Lin YE, Vidic RD, Stout JE, Yu VL. Legionella in water distribution systems. J Amer Water Works Assoc 1998; 90:112‐121.
  5. Stout JE, Yu VL. Experience of the First 16 Hospitals Using Copper‐Silver Ionization for Legionella Control: Implications for the Evaluation of Other Disinfection Modalities
  6. Shih HY, Lin YE, Yang TC, Lay JJ “Efficacy of a commercial Copper‐Silver Ionization System in Eradicating Waterborne Pathogens in vitro and in a Model Plumbing System” 2007 American Society for Microbiology Annual Conference, Toronto, Canada, May, 2007
  7. Lin YE…. “Inactivation of M. avium by Copper & Silver Ions” (in vitro) November, 1997
  8. Huang H, Huang W, Lin YE, Chen Y, Yang T. “In Vitro Efficacy of Copper and Silver Ions in Killing Stenotrophomonas maltophilia and Pseudomonas aeruginosa: Implications for Disinfecting Hospital Water Systems” American Society for Microbiology Annual Meeting, New Orleans, Louisiana, May 2004
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