The growing number of research papers and experiments for copper’s effectiveness against germs is also supported
by extensive testing approved by the U.S. Environmental Protection Agency, who have granted
multiple copper alloys antimicrobial status.
From EPA documents which can be found here, suitable copper alloys can be manufactured with the following details attached to the product labels.
For copper alloys ranging from 62% (Group VI) to 96.2% (Group I) - laboratory testing has shown that when cleaned regularly:
Testing demonstrates effective antibacterial activity against Staphylococcus aureus, Enterobacter aerogenes, Methicillin-Resistant Staphylococcus aureus (MRSA), Escherichia co1i0157:H7, and Pseudomonas aeruginosa. The reports also contain suggested touch surfaces that could be fabricated from the mentioned copper alloys to make use of the passive antimicrobial effects, such as; hand rails, counter-tops, faucets, light switches and many more.