Is there are an expiration date on water? If not, then why does all packaged water have one? And can drinking expired water make you sick? Read on to know more. Do you know that your bottled water does come with an expiration date? It is a hot summer day. You just rush to your local supermarket and grab a bottle of water. Now while drinking, you notice a date on the bottle, which is none other than the expiration date of the packaged water bottle. Yes, there is an expiration date on your water bottle. So, what happens to all the stocked-up packaged water bottles that are brought from supermarkets to avoid going out in the pandemic? Would they go bad? And what happens when you drink expired packaged water? Let’s find out answers to these burning questions. Does packaged water go bad? The straightforward answer to this question would be yes. While many people would deem the expiration date on a water bottle unnecessary, and few paranoids may create a fuss regarding the expiration date. Before venturing further on this topic, it is important to know why the expiration on the bottle existsin the first place. Due to the bureaucracy of government, companies must mention the nutritional value, best before date, and ingredients on all beverages and package food. But thankfully, packaged drinking water has a very long expiration date, but opened bottles have to be consumed within a couple of days. What will happen if one consumes an “expired” packaged water bottle? Firstly, we need to understand that water would not go bad if stored properly. But the expiration date is meant for the plastic that holds the water. PET or Polyethylene terephthalate and HDPE or high-density polyethylene are commonly used plastic for packaged drinking water. This plastic can melt in the water (which it eventually does) most of the time because of the heat, which can be hazardous for health in the long run. As we all know that plastic is porous no matter how high or low quality it might be. It is known to draw in various odours and chemicals. These chemicals might not instantly harm you at first, but they can take a toll on your health tomorrow. So, it is best not to consume water past its expiry date. We are not saying to stop drinking water. You can replace your packaged drinking water bottle with a reusable water bottle that can be refilled with fresh and clean water every time.