Decide for yourself. Bis-Phenol A is an additive in clear, hard plastics. It is used in water bottles, baby bottles, soda can liners, etc. and is known to leach into the foods and liquids which are stored in it. It is in recycling category 7 (on the bottom of the bottle, in the triangle). Independent academic studies suggest it presents a variety of risks to humans. Bisphenol A: Now linked to Breast Cancer and the Feminising of Males.