The most common are #1 and designed for one time use. They leach Xenoestrogens which is linked to cancer and other hormonal disfucntions. #7 while they typically look nice, also do this. Especially when exposed to heat and sunlight. #2, #4 and #5 are your best for reuse; but again, don’t let your water, etc sit long or in a warm atmosphere. If you buy water that has that funky taste. Pour it out!
#1 –>polyethlyene terephthalate |
#2 –>high-density polyethylene |
#3 –>PVC polyvinyl chloride |
#4 –>low-density polyethylene |
#5 –> polypropylene |
#6 –>polystyrene / expanded |
#7 –> resins or multi-materials |