Thursday 30 August 2012

the problem with plastic bottles

drinking water 
I remember being shocked last year to hear that the plastic bottles that we buy bottled water in can break down over repeated use and be carcinagenic to our systems. being a believer in reduce, re use, recycle, I was horrified!! So of course, I did my homework. and here's what I found....

Most plastic bottles are safe to reuse a couple of times if well rinsed out with warm soapy water between uses. But recent revelations about the chemical Lexan would has certainly put me off them at all.

The thing is there are different types of plastic used in bottles and in different densities. Here are the ones to watch for:

Chemicals May Contaminate Food and Drinks in Reused Plastic Bottles
Studies have indicated that food and drinks stored in such containers—including those ubiquitous clear Nalgene water bottles hanging from just about every hiker’s backpack—can contain trace amount of Bisphenol A (BPA), a synthetic chemical that interferes with the body’s natural hormonal messaging system.

Reused Plastic Bottles Can Leach Toxic Chemicals
The same studies found that repeated re-use of such bottles—which get dinged up through normal wear and tear and while being washed—increases the chance that chemicals will leak out of the tiny cracks and crevices that develop over time. According to the Environment California Research & Policy Center, which reviewed 130 studies on the topic, BPA has been linked to breast and uterine cancer, an increased risk of miscarriage, and decreased testosterone levels.

BPA can also wreak havoc on children’s developing systems. (Parents beware: Most baby bottles and sippy cups are made with plastics containing BPA.) Most experts agree that the amount of BPA that could leach into food and drinks through normal handling is probably very small, but there are concerns about the cumulative effect of small doses.
Even Plastic Water and Soda Bottles Should Not Be Reused
Health advocates also recommend not reusing bottles made from plastic #1 (polyethylene terephthalate, also known as PET or PETE), including most disposable water, soda and juice bottles. According to The Green Guide, such bottles may be safe for one-time use, but re-use should be avoided because studies indicate they may leach DEHP—another probable human carcinogen—when they are in less-than-perfect condition.

plastic bottles
Millions of Plastic Bottles End Up in Landfills
The good news is that such bottles are easy to recycle; just about every municipal recycling system will take them back. But using them is nonetheless far from environmentally responsible: The nonprofit Berkeley Ecology Center found that the manufacture of plastic #1 uses large amounts of energy and resources and generates toxic emissions and pollutants that contribute to global warming. And even though PET bottles can be recycled, millions find their way into landfills every day in the U.S. alone.

Do you recycle yours?

 organizers plastic-bottles
Incinerating Plastic Bottles Releases Toxic Chemicals
Another bad choice for water bottles, reusable or otherwise, is plastic #3 (polyvinyl chloride/PVC), which can leach hormone-disrupting chemicals into the liquids they are storing and will release synthetic carcinogens into the environment when incinerated. Plastic #6 (polystyrene/PS), has been shown to leach styrene, a probable human carcinogen, into food and drinks as well.


The good news!!!

Safe Reusable Bottles Do Exist
Safer choices include bottles crafted from safer HDPE (plastic #2), low-density polyethylene (LDPE, AKA plastic #4) or polypropylene (PP, or plastic #5). Aluminum bottles, such as those made by SIGG and sold in many natural food and natural product markets, and stainless steel water bottles are also safe choices and can be reused repeatedly and eventually recycled.
 Sigg
So let's not despair just yet. Time to get educated and help keep water safe :)

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