People have embraced the convenience and perceived superior quality of bottled waters. However, the fact that most come in plastic concerns many consumers. Plastic is made of chemicals which can leach into food and beverages, especially when it is softened or degraded by heat. For this reason, many consumers are interested in knowing about BPA free bottled water brands.

The proper chemical name is bisphenol A, a component of polycarbonate plastics and epoxy resins. Polycarbonates are commonly used in food packaging. Epoxy resins are used to line metal cans and bottle tops. The lining prevents the metal from reacting with foods or liquids. However, many health researchers caution against using polycarbonates in products like baby bottles, and studies show that chemical taints may leach into canned foods from the protective resin lining.

There is controversy over the safety of this chemical. Research has shown that it does sometimes leach into food and beverages. However, the FDA (the Food and Drug Administration, the regulatory agency for the United States food and pharmaceutical industry) believes that the low levels found in consumer goods do not pose a significant threat, even for unborn children and infants.

While the FDA continues its investigation of this chemical, it has published guidelines to limiting exposure to the chemical. Tips include warnings about putting plastic food containers in the microwave or in the dishwasher, since high heat can cause the plastic to break down. Another suggestion is to limit the use of canned goods.

In spite of FDA assurances, the research that shows possible ill effects of this chemical is still of concern to many, especially for parents of unborn children and the very young. Research has shown that this estrogen-mimic chemical can affect brain development and the prostate gland. It is also believed to affect behavior in children and may perhaps be a carcinogen for people of all ages.

This has caused manufacturers to create many bisphenol A-free products for concerned parents. Look for the designation on labels for such things as teething rings, pacifiers, 'sippy cups', and formula bottles. When looking at beverage containers, the recycle code on the bottom is one way to identify containers that may contain this chemical. If the number is a 7, any bottle or container so marked is made of polycarbonate plastic.

The marketplace is full of drinking bottles made of glass or metal that eliminate the use of plastic completely. As far as waters sold in plastic go, it's not easy to find brands that promise to be BPA-free. Although there are many that do not come in polycarbonate bottles, this fact is not always advertised. One way to tell is to check the recycle codes on the containers; 2, 4, and 5 are non-polycarbonate codes, while the number 1 means that the plastic container is safe but should not be re-used.

If you want to make sure about a commercial brand, call the manufacturer directly and ask a customer service representative. The representative will be glad to tell you if the manufacturer's bottles are in fact BPA-free. Otherwise you can minimize exposure by using glass, stainless steel, or porcelain food and beverage containers.