Mineral Water Bottles
Have you ever wondered about the little numbers on the
bottom of plastic products, usually surrounded by arrows? I presume many have
not noticed it. These are called the
resin identification codes and were introduced in 1988 by the Society of the
Plastics Industry, Inc. to help with recycling.
Today, most single-use plastic water bottles are made out
of Polyethylene Terephthalate (PET or PETE), which is marked with a 1. Reusable
plastic water bottles are usually made from High-Density Polyethylene (HDPE),
which is marked with a 2; Polypropylene (PP), which is marked with a 5; or
Polycarbonate (marked with a 7 or the letters "PC").
While it's tempting to just
re-use that water bottle you bought at the gas station or supermarkets, you may
want to toss it in the recycling bin instead. Chances are the bottle is made
out of PET. While manufacturers such as the American Plastics Council have said
that washing PET bottles with soap and water will keep the bottle safe, health
and environmental groups are concerned that re-using these bottles leaches
phthalates (endocrine disruptor), specifically DEHP (also called BEHP), into
the water.
Among other concerns, an
October 2008 study published in Environmental Research found that pregnant
women exposed to high levels of DEHP gave birth to baby boys with smaller
penises and undescended testes. Other studies have found that degraded PET
bottles leach DEHA, which is known to cause liver problems and may be a
carcinogen.
Safe use of plastic bottles
If you plan on washing and
re-using your plastic water bottle, your best bet is to go for polyethylene
(marked with a 2) or polypropylene (marked with a 5). However, you may want to
consider foregoing a plastic bottle entirely, and choosing one made from glass
or stainless steel.I highly recommend it.
Other Plastic Tips
In general, avoid exposing
plastics to extreme heat, like in the dishwasher or microwave. Even if the
plastic claims to be dishwasher or microwave safe, heating it to extreme levels
will cause it to degrade, and could release chemicals into your food and drink.
And don't fill your plastic water bottles with hot liquids, like tea or coffee,
for the same reason. Remember not to re-use single-use plastic products, like
water bottles, because they will quickly degrade.
Environment
Plastic water bottles are
poorly biodegradable, so much of the landfill plastic is ultimately burned
which releases unknown but large amount of toxic smoke into the atmosphere.
Personal Practise
I stop re-using single use
water bottles (those with resin identification marked 1) and got rid
of all similar bottles at home. I have filtered water at home and I fill
my stainless steel water bottle everyday. I sometimes purchase mineral
water from the store but will immediately discard it once I have finished. I
try not to bring plastic water bottles home. I have also stop re-heating food
in plastic containers in the microwave. No plastic containers are used to heat
food on the stove, microwave or oven despite having the microwave safe label. It
can be difficult to get your family accustomed to this change but its well
worth the effort.
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