It was only 2004 when the first Klean Kanteen durable stainless steel water bottle was released in Chico, California, but in that time the company has grown into one of the premier bottle manufacturers in the world. When information began emerging into the harmfulness of Bisphenol A (BPA) leaching from plastic bottles or metal bottles with plastic linings, Klean Kanteen was there and ready to invade the market. KK - Safe and Sound.