How Does Bottled Water Expire?

How Does Bottled Water Expire

You’ve just finished an intense workout, and you reach for a cold bottle of water. You crack open the seal and as you bring the bottle to your lips, you notice the expiration date says the water expired two months ago. You thought the bottle seemed a little dusty.

Should you worry?

Of course not. Water doesn’t go bad. Having a freshness date on a bottle of water makes about as much sense as having an expiration date on sugar or salt.

There are several reasons why water bottles come with an expiration date. The main one is government bureaucracy: Water is a consumable food product, and as such, it is subject to laws requiring expiration dates on all consumables, from rice to lemonade.

Besides that, the expiration date on bottled water has certain benefits for the manufacturer.

Although water, in and of itself, does not go bad, the plastic bottle it is contained in does “expire,” and will eventually start leaching chemicals into the water. This won’t necessarily render the water toxic, but it might make it taste somewhat less than “mountain spring fresh.” If consumers contact drink companies to complain that water they bought several years earlier tastes bad, the bottlers can point out that it’s their own fault for not drinking it by the expiration date.

Furthermore, many companies bottle water using the same machines they use to bottle sodas and other beverages which do expire and should carry an expiration date. It’s easier and more efficient to simply put a stamp on all the bottles (whether needed or not) rather than dedicating a special machine just for bottled water.

Finally, expiration dates are usually only one element of a printed code that also identifies the date, bottling plant, and other information. Even though the expiration date itself is meaningless in terms of water going bad, the manufacturing information could be useful in tracking down contamination, bottling errors or product recalls.

 

h/t to livesceience.com for the great info!

Why Do We Sunburn Faster In Water?

Why Do We Sunburn Faster In Water?

“It’s pretty easy to tell when you’re getting a sunburn if you’re lying out by the pool. The tricky part is being able to decipher when you’ll turn a shade of tomato red while relaxing in the water. Submerging yourself, even slightly, can lower your body temperature and make you forget all about the sun’s UV rays, which might mean sunscreen is the last thing on your mind. However, it’s crucial to uphold routine sunscreen rituals, because not only can you get a burn if you’re in the salt system pool, but it may be worse, as water reflects the sun.”

Sunburn Effects

“Sunburns and the effects of prolonged sun exposure damage the outer layer of the skin. Pale or light skin turns red after over-exposure to sunlight. Irritation, swelling and later sloughing off of dead skin occurs. Eventually, the body produces some melanin in reaction to the damage, and light skin tans. Some people, such as red heads, never tan and always burn. Others burn on excess exposure, only to turn tan later. Both acute and chronic exposure to the sun dries out the skin and leads to wrinkling and creasing of the skin, and potentially, different types of skin cancers.”

Chlorine Effects

“Chlorine is a safeguard and an irritant as well. The chlorine in a pool disinfects the germs swimmers encounter in the water, and in the process, it creates byproducts that cause swimmers distress. Chloramine compounds are the culprits for the intense smell of some chlorinated pools, as the red eyes and runny noses of its users. In addition, chlorine sanitation sometimes causes itchy and dry skin. Under-hydrated, chafed skin is more vulnerable to damage from sun exposure, so frequent pool users might feel the sun on their skin before non-swimmers do, according to “Swimmer,” a publication of U.S. Master Swimming.”

Interaction

“Chlorine does not increase the risk of sunburn, nor does it create an unusual hazard to people swimming with sunburned skin. Rather, it further dries out already irritated and inflamed skin, accentuating existing discomfort. Infection is not a problem, though, as the proper chlorination of pool-water minimizes the risk. People who choose to bathe outside with existing sunburns and further expose skin to UV rays might cause long-term damage to their health.”

 

In short, avoid prolonged periods in the swimming pool if you have not used a high-SPF sunblock. Re-apply the sunblock every hour, especially because the water in the pool will help remove it.

“Apply a sunscreen and reapply often when you go in the water. Wash off thoroughly after swimming in chlorinated pools, using specialized shampoos that help to eliminate chlorine on skin. Apply generous amounts of moisturizer to dry skin, but avoid using any scented products on inflamed or cracked skin. Chlorine further dries out sun-damaged and irritable skin, so staying away from the pool for a day or two is a good idea.”

h/t to poolman.com and livestrong.com  for the great info!