Pesticides; Final Guidance and Test Method for Antimicrobial Product Efficacy Claims Against Planktonic Legionella Pneumophila in Cooling Tower Water; Notice of Availability
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Issuing agencies
Abstract
The Environmental Protection Agency (EPA or Agency) is announcing the availability of the final guidance and test method for adding efficacy claims to antimicrobial products for use in cooling tower water to reduce the level of planktonic Legionella pneumophila (L. pneumophila). The method and guidance describe quantitative efficacy testing of antimicrobial products to support claims for the reduction of planktonic L. pneumophila in water within cooling tower systems and how to prepare an application for registration. The guidance does not address adherent or sessile bacteria that attach to a surface (e.g., biofilm) of the cooling tower system or any other microorganism other than L. pneumophila which may be found in the water of cooling tower systems.
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