water in the bottle

As you know chemical released by plastic water bottles can cause cancer(It is not the water that affects you but the chemical from the bottle) How to avoid: Check the bottom of the bottle there should be a triangle sign and there will be a number on it. If the number is higher than or equal to 5>then this bottle is safe to use. NUmbers under 5 will release the chemical. FOr most plastic bottle, the number is 1. Stop using it.pls pass on this information to ur frens