Does bottled water have harmful chemicals?

Answer 1

The answer is no but when you have used it again for the second time or for the third time, the harmful chemical of the bottle will mix with the newly added water that can make the water unclean. Conclusion: we can only use a disposable bottle once.

Hope I helped^-^

The answer above is not entirely correct.

The presence or absence of harmful chemicals in bottled water depends on the source of the water and any treatments it may have gone through. Some bottled water is bottled straight from springs or wells and is essentially free of harmful chemicals as long as the ground water doesn't get contaminated. Other bottled water is just tap water that has been packaged in individual bottles. If the tap water has harmful chemicals, so will the bottled water. Some of the bottled water starts as tap water but is treated and filtered to remove harmful bacteria and then aerated to give it a better taste (water with no air in it tends to taste a bit "flat"). The processing of the water may or may not remove residual chemicals.

As long as you are getting water that has been processed through pipes and machinery, there is always a risk that it can get contaminated along the way, even though it shouldn't. Ground water can get contaminated with harmful chemicals. Consequently, bottled water is not guaranteed to be free of harmful chemicals.

Some Key Differences Between EPA Tap Water and FDA Bottled Water RulesWater TypeDis-infection Required?Confirmed E. Coli & Fecal Coliform Banned?Testing Frequency for BacteriaMust Filter to Remove Pathogens, or Have Strictly Protected Source?Must Test for Crypto-sporidium, Giardia, Viruses?Testing Frequency for Most Synthetic Organic ChemicalsBottled WaterNoNo1/weekNoNo1/yearCarbonated or Seltzer WaterNoNoNoneNoNoNoneBig City Tap Water (using surface water)YesYesHundreds/ monthYesYes1/quarter

(limited waivers available if clean source)

As far as re-using water bottles is concerned, there are some incorrect reports circulating that the plastics used for bottling water release chemicals into the water when they are re-used. If that were the case, they would start releasing chemicals into the water as soon as it was bottled. The main risk from re-using bottled-water bottles is that as a person drinks from them, the bottle tends to get contaminated with microorganisms from the person, spores and dust from the surrounding air, dirt and gunk from the outside of the bottle, etc. If the bottle is rinsed and cleaned off, it can stay pretty sanitary - but who washes old bottled water bottles? Also - the plastic used to bottle the water doesn't stand up well to the heat of something like a dishwasher, so it is tough to sanitize it with heat. The main risk from reusing water bottles is the stuff that builds up on it, not chemicals coming out of the container. In theory you could safely reuse bottled water bottles until the plastic cracked and they started leaking. From a practical standpoint, they get gross within 10 or 20 re-uses.