Got this from a friend: Those below 5, only use once, should not be reused....
PLASTIC WATER BOTTLE BELOW OR EQUAL TO 5
A dentist's wife has a tumor in her uterus and need to remove it. Her doctor told them the p ossible cause of his wife's Tumor is by some chemical which only affecting women. The chemical mainly find in plastic water bottle. It is not the
water that affecting you but the chemical releasing from the bottle. You must check on the bottom of the bottle there is a triangle sign (recycle sign) and there will be a number on it.
Make sure the number is higher than or equal to 5. Then this bottle is save to use. Whatever number under 5 will release the chemical. For most bottle water, the number is 1. Remember to check andstop reuse those bottles.
KHAIRUR RIJAL JAMALUDIN
Lecturer of Fluid Dynamics and Fluid Power System
University Technology Malaysia
54100 Kuala Lumpur