Plastic #1: Polyethylene Terephthalate (PETE)
PET is generally considered safe for water storage. but it can actually leach the toxic metal antimony, which is used during its manufacture.
It also found that the longer a bottle of water sits on a shelf — in a grocery store or your refrigerator — the greater the dose of antimony present. It is believed that the amount of antimony leeching from these PET bottles differs based on exposure to sunlight, higher temperatures, and varying pH levels.
Plastic #2: High Density Polyethylene (HDPE)
HDPE, which is considered a low-hazard plastic, is often used for milk, water and juice bottles. HDPE has been found to release estrogenic chemicals, which is why we don’t encourage the re-use for very long. We see many customers re-use their milk and juice containers for water storage. Due to the high risk of contamination from previously held substances, we HIGHLY discourage re-use for water if it did not originally contain water when purchased.
Plastic #7: Polycarbonate (PC)
This is a catch-all designation used to describe products made from other plastic resins not described above, or those made from a combination of plastics. It’s difficult to know for sure what types of toxins may be in #7 plastics, but there’s a good chance it often contains BPA (Bisphenol-A). BPA and BPS are endocrine disrupters, which means they mimic or interfere with your body’s hormones and “disrupts” your endocrine system. These chemicals can eventually leach into the water as the water bottle ages.
Polycarbonate has been a popular plastic for water storage due to it’s strength and durability. This plastic is lighter than glass, less likely to break and easily found in the market place. You will want to make sure to store these water bottles in a climate-controlled environment without direct sun exposure, which helps prevent the premature aging of the water bottle.
Plastic #7: BPA Free
Many consumers are now opting to purchase BPA Free bottles for their water storage. BPA Free plastic bottles are still categorized under the #7 plastic code. BPA free bottles will have a special designation on the bottom of the bottle.
Glass has always been a popular way to store water. Glass is easy to come by, easy to sterilize, impermeable, and does not pose the same health risks of leeching chemicals into your drinking water than plastic. The downside to glass water bottles are that they are heavy, break easily, and need to be protected from sunlight.
In the end, whatever choice you make in water storage comes down to preference and the benefits that are most important to you and fit your lifestyle. The fact you have chosen to ‘Refill & Reuse’ a water bottle shows you are already making a wise decision.