EPA Faces Lawsuit for Classifying Water Filtration System as a Pesticide Product

The U.S. District Court for the Northern District of Texas will be tasked with determining whether EPA’s Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA) enforcement actions against Berkey, a water filters brand, were arbitrary and capricious in the case Shepherd v. Regan.  The case concerns seven Stop Sale, Use and Removal Orders (SSUROs) issued by EPA against third-party distributors and manufacturers of Berkey water filtration products due to their alleged use of silver as an unregistered antimicrobial pesticide.

The complaint does not deny the presence of silver in Berkey products.  However, the plaintiffs say that they are unaware of any instances where a Berkey-authorized entity claimed that the silver in their products was “used for any purpose other than to protect the filter itself.”  This is significant because articles treated with a FIFRA-registered pesticide for the purpose of protecting the article are exempt from FIFRA under the treated articles exemption at 40 CFR 152.25.

The plaintiffs argue that the orders were the result of an unlawful reinterpretation of a 2007 notice, which clarified EPA’s position that equipment that uses electrodes to emit ions for pesticidal purposes is a “pesticide,” rather than a “device,” under FIFRA.  The complaint alleges that EPA reinterpreted this notice without opportunity for public comment to “now apply to the presence of inert silver in water filters.”

In its response, EPA argues that the plaintiffs—which do not represent Berkey itself—lack standing.  The Agency also characterizes the 2007 notice referenced in the complaint as a “straw man” with no bearing on the case.  EPA does not believe there is any ambiguity regarding the distinction between “pesticides” and “devices,” arguing that EPA has excluded water filters containing pesticidal substances from its interpretation of “devices” since 1975.

EPA focuses on claims made by the SSURO recipients, which allegedly advertised that Berkey filters removed viruses and pathogenic bacteria.  The Agency has long held that such public health claims make a product ineligible for the treated article exemption, EPA says.  Combined with knowledge of the presence of silver in the products, and no pesticide registration, EPA argues that it had “reason to believe” (the requirement for issuance of an SSURO) that the substances were sold in violation of FIFRA.