Just when you had given up your plastic bottles for a permanent solution, and decided to buy a polycarbonate Nalgene bottle, news about bishpenol A, "an endocrine disruptor, [of which there] is growing concern that long term low dose exposure may induce chronic toxicity in humans [wiki]."
Canada is set to ban the chemical bisphenol A( from canada.com)
Health Minister Tony Clement will make the announcement in Ottawa alongside Environment Minister John Baird and Christian Paradis, Secretary of State for Agriculture. The official declaration of the synthetic chemical compound as a toxic substance under the Canadian Environmental Protection Act will kick-start a risk assessment process that could lead to a ban in baby products, water bottles and food containers. Retailers have already begun to pull plastic products containing bisphenol A in anticipation of the announcement.
Nalgene has decided to drop bishpenol A in favor of preferred alternatives, according to the NY Times today:
Nalgene, the brand that popularized water bottles made from hard, clear and nearly unbreakable polycarbonate, will stop using the plastic because of growing concern over one of its ingredients.The decision by Nalgene Outdoor Products, a unit of Thermo Fisher Scientific, based in Rochester, came after reports that the Canadian government would declare the chemical bisphenol-a, or BPA, toxic. Some animal studies have linked the chemical to changes in the hormonal system.
Those reports also prompted many of Canada’s largest retailers, including Wal-Mart Canada, to remove food-related products made with plastics containing the compound chemical, like baby bottles, toddler sipping cups and food containers, from their stores this week.
Bishphenol A is also found in food and beverage can linings, and in baby bottles. The concerns regarding the possible health effects of bisphenol A (BPA) have been overblown by the news media, the American Chemistry Council (ACC) said. “Human exposure to BPA is far below levels deemed by governments around the world as safe,”
Begs the question as to why the chemical is even needed as a liner in cans, which did not have anything foreign for decades and served quite adequately as containers.
But it seems you can't get away from it (from ourstolenfuture):
Other exposures result from BPA's use in "films, sheets, and laminations; reinforced pipes; floorings; watermain filters; enamels and vanishes; adhesives; artificial teeth; nail polish; compact discs; electric insulators; and as parts of automobiles, certain machines, tools, electrical appliances, and office automation instruments" (Takahashi and Oishi 2000).