Water filters that contain bacteriostatic (slowing or inhibiting growth of germs) or antimicrobial (germ-killing) agents must be registered with EPA. EPA also registers a type of water treatment device known as a purifier. A purifier must remove, kill, or inactivate all types of disease-causing organisms including viruses from water.
EPA registration is not intended to guide consumers in selecting a water treatment device, and is not an endorsement of the product.
See the Antimicrobial Pesticide Registration web page for additional information on antimicrobial product registrations.
For further information or assistance, you may contact the Antimicrobial Division by phone at 703-308-6411, or through the Pesticides Frequent Questions Database.